The cheapest way into Sainte-Chapelle on GetYourGuide is the $28 combined ticket with the Conciergerie, or a $26 one-hour guided visit with reserved entry. The most-reviewed option is that $28 ticket: 4.4 stars from 11,020 reviews. The official site, sainte-chapelle.fr, sells tickets from 16 euros. For a first visit I’d book the Walks In Europe tour at $84.
I compared all 10 Sainte-Chapelle tickets and tours you can book on GetYourGuide right now, and every price below is a price for Sainte-Chapelle tickets as listed. Only one is a plain entry ticket; the other nine are guided walks or day tours that include entry, and most start at Notre-Dame. Prices are in US dollars and come from the listings, checked in November 2026. The buttons open GetYourGuide through affiliate links (more on that on my about page).
Sainte-Chapelle Tickets at a Glance
Sainte-Chapelle tickets differ less in what you see than in what is bundled around the chapel, so here is every Sainte-Chapelle ticket in one table.
What
Details
Ticket types
1 combined entry ticket (chapel and Conciergerie), 9 guided tours or day tours that include the chapel
Price range
$26 (Vox City one-hour visit) to $223 (Napoleone Tour, Italian, French or English)
Areas by type
The chapel’s lower and upper levels with every ticket; the Conciergerie with the $28 ticket and two walking tours; the Louvre and Orangerie on the 9-hour day tour
Official ticket
22 euros outside the EEA, 16 euros inside; combined with the Conciergerie 30 or 23 euros (sainte-chapelle.fr)
Time to allow
75 minutes (Paris Fun Tours) to 9 hours (Extime Travel day tour)
Address
10 Bd du Palais, 75001 Paris (per Google Maps)
Google Maps hours
9 am to 5 pm, every day
What separates one Sainte-Chapelle ticket from another is mostly the walk around the chapel. The entry itself is a timed slot on the Île de la Cité, and the upper chapel with the stained glass is the part everyone comes for. Whichever of the Sainte-Chapelle tickets you pick, the slot is checked at the door, the voucher goes on your phone, and the chapel’s upper level is where you will spend most of your time.
Sainte-Chapelle Entry Tickets
Sainte-Chapelle entry tickets are almost always sold inside a walk of the island, so what you pay for is the guide and the Notre-Dame stop as much as the slot. The first option here is the one I’d pick for most first visits: a two-hour Walks In Europe tour at $84, 4.7 stars from 878 reviews. The guide covers the Île de la Cité, Notre-Dame from outside, then the pre-reserved Sainte-Chapelle and Conciergerie tickets. Groups are capped at 8, the language is English, and cancellation is free up to 24 hours before.
Walks In Europe
Sainte-Chapelle, Conciergerie, Notre Dame Guided Tour
★4.7 (878 reviews)
2 hours
Free cancellation
My pick: My pick for a first visit: pre-reserved Sainte-Chapelle and Conciergerie entry in a group of eight, 4.7 from 878 reviews.
What you get, where you meet, what reviewers say
Included
✓ Guided visit to Île de la Cité
✓ Exterior visit to Notre Dame Cathedral
✓ Pre-reserved tickets for Sainte-Chapelle and Conciergerie
✓ Professional and local Walks In Europe tour guides
✓ Small groups of up to 8 people
✓ 2-hour walking tour with anecdotes and memorable moments
Not included / not suitable
✕ Transportation to the meeting point
✕ Entrance to Notre Dame Cathedral
Meeting point: Meet outside the café Brasserie Les Deux Palais. Look for your guide with a sign that says 'Walks In Europe.' 3 Bd du Palais, 75004 Paris, France
Languages: English
Duration: 2 hours
Cancellation: Cancel up to 24 hours in advance for a full refund
“Merva(sp.?) was beyond excellent. She spent a lot of time explaining everything clearly and she answered ever ones questions in depth .” – GetYourGuide review
It does not include entry to the inside of Notre-Dame, which the listing says plainly. One reviewer wished for more explanation of the stained-glass scenes, so ask your guide to dwell on them. If you want something shorter and cheaper, the Paris Fun Tours walk at $78 runs 75 minutes and pairs a pastry tasting with a ticket to the chapel.
Paris Fun Tours
Notre-Dame Outdoor Tour with Pastry & Sainte-Chapelle Entry
★4.6 (48 reviews)
75 minutes
Free cancellation
My pick: The short one: 75 minutes, a pastry tasting and a Sainte-Chapelle ticket, but only 48 reviews so far.
What you get, where you meet, what reviewers say
Included
✓ Guided walking tour of Notre-Dame’s exterior and the Île de la Cité
✓ Entry ticket to Sainte-Chapelle (self-guided visit after introduction)
✓ Pastry tasting at Odette (cream puff included)
✓ English-speaking knowledgeable guide
✓ Discovery of hidden gems
Not included / not suitable
✕ Entry to Notre-Dame Cathedral interior
Meeting point: When facing the front of Notre Dame Cathedral, turn around (180 degrees) so your back is to the cathedral. Walk straight in that direction until you see a pink flag that will say "Paris Fun Tours." Your guide will be waiting next to the Archeological crypt of Notre-Dame, in front of the stone bench that faces the cathedral. Please refer to meeting photos that are in your voucher. Parvis Notre Dame - Place Jean-Paul II, 75004 Paris, France
Languages: English
Duration: 75 minutes
Cancellation: Cancel up to 24 hours in advance for a full refund
“Excellent!! Angeline was the BEST! We enjoyed every minute and learned so much — she is extremely knowledgeable and exceedingly kind!” – GetYourGuide review
The catch is that you visit the chapel on your own after the introduction, and the review count is small at 48, so treat the 4.6 rating as an early signal.
Sainte-Chapelle Admission Tickets
For admission tickets with a small tour attached, The Perfect Vacation sells the Notre-Dame outdoor walk in several versions. The $60 listing is the one with options: the Notre-Dame crypt, Sainte-Chapelle, or Sainte-Chapelle plus the Conciergerie. The listing says each entry is included only if that option is selected, so read the option name before you pay. It holds 4.6 stars from 790 reviews, lasts 1.5 to 2 hours and meets opposite Café Panis near the Pont au Double.
THE PERFECT VACATION
Notre Dame Outdoor Tour with Sainte-Chapelle / Crypt.
★4.6 (790 reviews)
1.5 - 2 hours
Free cancellation
My pick: Choose the option that says Sainte-Chapelle: a guided Notre-Dame walk, 4.6 from 790 reviews, 24-hour free cancellation.
What you get, where you meet, what reviewers say
Included
✓ Notre Dame Crypt entry - Only if the option is selected
✓ Sainte-Chapelle Entry - Only if the option is selected
✓ Sainte chapelle and Conciergerie Entry- Only if the option is selected
✓ Notre Dame outdoor walking tour is included in all the options
✓ Guide service
Not included / not suitable
✕ Coffee and/or Tea
Meeting point: Meeting Point: Join us opposite Café Panis, at the corner of the bridge Pont au Double. Our guide will be wearing a red cap with The Perfect Vacation Logo. We look forward to welcoming you there!
Nearest Train : RER B Pont au Double, 75004 Paris, France
Languages: English
Duration: 1.5 - 2 hours
Cancellation: Cancel up to 24 hours in advance for a full refund
“Had a great time and learned a lot about Notre Dame that I never thought I needed to know Great time and fun delivery of the history” – GetYourGuide review
The Napoleone Tour listing at $223 is the dearest Sainte-Chapelle admission ticket I found and the only one offered in French and Italian as well as English. It says skip-the-line admission to the Conciergerie and Sainte-Chapelle is included and that Notre-Dame is ticket-free. It holds 4.6 stars from only 26 reviews, and it is non-refundable. A reviewer praised a private guide, which may explain the price, but the listing doesn’t state a group size.
Napoleone Tour
Sainte-Chapelle and Conciergerie Guided Tour
★4.6 (26 reviews)
2 hours
My pick: Only if you need it in French or Italian: skip-the-line admission to both buildings, non-refundable, at a steep $223.
What you get, where you meet, what reviewers say
Included
✓ Guided tour
✓ Professional guide
✓ Skip-the-line admission tickets for the Conciergerie and Sainte-Chapelle (Notre-Dame is ticket-free)
Not included / not suitable
✕ Notre-Dame roof ticket
Meeting point: Meet your guide outside the Cité metro exit. Look for the blue rounded badge.
Languages: Italian, French, English
Duration: 2 hours
Cancellation: This activity is non-refundable
“Everything was easy and fun. The guide was great. We met him at Notre Dame. He gave us a great tour with great information--not too long. Then, we skipped the line at Sainte-Chapelle and had an equally great experience. I highly recommend!” – GetYourGuide review
A Sainte-Chapelle tour makes sense because the chapel explains little on its own. Panels tell the story of the Bible, and a guide tells you who built it and why. According to Wikipedia, it was built between 1238 and 1248 for King Louis IX to house his relics of the Passion, including the Crown of Thorns. That is the kind of detail a guide supplies in the first five minutes.
The best fit here is the Memories France small group at $111: a 1.5-hour licensed guide, headsets, and a skip-the-line timed entry to Sainte-Chapelle, rated 4.6 from 198 reviews. You meet at the Boutique Paris Today on Quai de Gesvres 15 minutes before the slot. A reviewer wrote that they were surprised by the long lines to get into the chapel, so the skip-the-line aspect was well worth it.
Memories France
Sainte-Chapelle Small Group Guided Tour
★4.6 (198 reviews)
1.5 hours
Free cancellation
My pick: The dedicated guided visit: licensed guide, headsets and a timed skip-the-line slot, 4.6 from 198 reviews.
What you get, where you meet, what reviewers say
Included
✓ 1.5 hour fully guided walking tour
✓ Expert, licensed guide
✓ Skip-the-line timed entry ticket to Sainte-Chapelle
✓ Headsets so you can hear the guide clearly
Not included / not suitable
✕ Hotel pickup and drop-off
✕ Tips for your guide (optional)
Meeting point: Meet at the Boutique Paris Today, 2 Quai de Gesvres. The nearest metro is Hotel de Ville. Please ensure you arrive 15 minutes early as we have a timed entry at the Sainte Chapelle and all tours must depart on time. 2 Quai de Gesvres, 75004 Paris, France
Languages: English
Duration: 1.5 hours
Cancellation: Cancel up to 24 hours in advance for a full refund
“Our guide was amazing, both entertaining and knowledgeable. He kept us engaged with interesting stories and pertinent information throughout the tour.” – GetYourGuide review
The second card is a different animal. The Extime Travel product at $133 is a nine-hour day that happens to include Sainte-Chapelle, which is why it is listed here. It covers the Louvre (the entry fee of 28 euros per person is stated in the listing), Sainte-Chapelle, the Conciergerie, the Musée de l’Orangerie and a reserved slot for Notre-Dame. The notIncluded list says no guide for the sites themselves, and reviewers confirm the sites are self-guided with a guide between them. If the Louvre is what you want, my Louvre Museum tickets comparison is the better starting point.
Extime Travel
Louvre, Sainte-Chapelle, & Notre Dame Full Day Tour
★4.2 (8,070 reviews)
9 hours
Free cancellation
My pick: Not a chapel-only product: a nine-hour island-and-Louvre day, 4.2 from 8,070 reviews, with sites visited on your own.
What you get, where you meet, what reviewers say
Included
✓ Coordination and assistance throughout the day
✓ Transfer by electric vehicle between the Seine riverbanks and the Louvre Museum
✓ Louvre Museum entry ticket fee (€28 per person)
✓ Tickets to Sainte-Chapelle, the Conciergerie, and the Musée de l’Orangerie
✓ Reserved entry slot for Notre-Dame Cathedral (free admission)
✓ Online audio guide for Notre-Dame
Not included / not suitable
✕ Guide
✕ Hotel pickup and drop-off
✕ Tips
✕ Lunch
Meeting point: 21 Rue d’Arcole, 75004 Paris – Meet our Extime Travel ambassador outside, in front of the building entrance
In case of problem, contact us on:
1/ WhatsApp +33 6 14 96 42 81
2/ Phone +33 1 44 55 60 00 21 Rue d'Arcole, 75004 Paris, France
Languages: Spanish, English
Duration: 9 hours
Cancellation: Cancel up to 24 hours in advance for a full refund
“Our guide Andrea was very knowledgeable, engaging and super friendly - would recommend this excursion if you're looking for a day filled with fun facts and interesting conversations around some of the highlights of Paris” – GetYourGuide review
People who search for St Chapelle tickets usually want the simplest thing: a Sainte-Chapelle ticket for the chapel and nothing else. The nearest product is the combined ticket at $28, which covers Sainte-Chapelle and the Conciergerie. It has by far the most reviews of anything on this page, 11,020, with a 4.4 rating, and a 24-hour validity. It is non-refundable, which matches the official site’s rule that its own tickets are neither exchangeable nor refundable.
Sainte-Chapelle and Conciergerie Combined Tickets
★4.4 (11,020 reviews)
24-hour ticket
My pick: The plain ticket, and the cheapest way in: chapel plus Conciergerie, 4.4 from 11,020 reviews, non-refundable.
What you get, where you meet, what reviewers say
Included
✓ Sainte-Chapelle entry ticket
✓ Conciergerie entry ticket
Meeting point: You can either start by the Sainte Chapelle or at the Conciergerie, located at 2 Boulevard du Palais, 75001 Paris. You will be required to present your entrance tickets to the monument when you arrive. On weekends, public holidays, and Christmas holidays, and on days without an audience (some Mondays), access to the monuments will need to be via the first address. 8 Bd du Palais, 75001 Paris, France
Duration: 1 day
Cancellation: This activity is non-refundable
“The entrance continues to be quite lengthy to access, but a reserved time is truly the fastest choice.” – GetYourGuide review
You can start at either building, per the listing, and you need to show your entrance tickets at the monument. On weekends, public holidays and days without an audience, the listing says access is via one address, so read the voucher on the day. One reviewer confirmed that a reserved time is truly the fastest choice despite a long entrance queue.
“The entrance continues to be quite lengthy to access, but a reserved time is truly the fastest choice.”
— GetYourGuide reviewer
If you would like Notre-Dame as well, the second option is a Walks In Europe visit at $176, 4.8 stars from 91 reviews, 2.5 hours, groups up to 8. It leaves from Brasserie Les Deux Palais, includes a guided visit to Notre-Dame and pre-reserved tickets for the chapel, and leaves out the treasury and towers. One reviewer found they couldn’t really go in at Notre-Dame, so don’t assume the cathedral interior is part of this price.
Walks In Europe
Notre-Dame Cathedral and Sainte-Chapelle Guided Tour
★4.8 (91 reviews)
2.5 hours
Free cancellation
My pick: The leftover here, but a strong one: a 2.5-hour small-group visit of both churches, 4.8 from 91 reviews, at $176.
What you get, where you meet, what reviewers say
Included
✓ Guided visit to Notre Dame Cathedral
✓ Pre-reserved tickets for Sainte Chapelle
✓ Semi-private groups of up to 8 people
✓ Professional and local tour guides
✓ 2-hour walking tour with engaging stories
Not included / not suitable
✕ Transport to the meeting point
✕ Visit to the Treasury and Bell Towers of Notre Dame
Meeting point: We will meet right outside a café named Brasserie Les Deux Palais, located at 3 Boulevard du Palais, 75004. Your guide will have a signboard that says, “Walks In Europe.” 3 Bd du Palais, 75004 Paris, France
Languages: English
Duration: 2.5 hours
Cancellation: Cancel up to 24 hours in advance for a full refund
“Leo was great, very knowledgeable about the history of both buildings.” – GetYourGuide review
Sainte-Chapelle is free only for some visitors. The official ticket rules list free entry for under-18s, for 18 to 25-year-olds who are EU nationals or regular residents of France, for disabled visitors and one companion, for job seekers with proof, and for everyone on the first Sunday of January, February, March, November and December. Free Sainte-Chapelle tickets still need a booked time slot, even if the ticket costs nothing, and the proof of age or residence is checked at the door. The next free Sundays are 6 December 2026 and 3 January 2027.
If none of that applies, the cheapest Sainte-Chapelle tickets are the ones above. The Perfect Vacation walk at $57 is not the cheapest, but it is one of the better-rated walks that start at Notre-Dame: 4.7 stars from 641 reviews, 1.5 hours, English, and a Notre-Dame outdoor tour with Sainte-Chapelle entry included. It cancels free up to 24 hours ahead, which the official ticket does not.
THE PERFECT VACATION
Sainte-Chapelle Entry with Notre Dame Outdoor Tour
★4.7 (641 reviews)
1.5 hours
Free cancellation
My pick: Not free, but the middle-priced walk: Notre-Dame outside then Sainte-Chapelle inside, 4.7 from 641 reviews.
What you get, where you meet, what reviewers say
Included
✓ Sainte-Chapelle entry is included
✓ Notre Dame outdoor walking tour
✓ Guide service
Meeting point: Meeting Point: Join us opposite Café Panis, at the corner of the bridge Pont au Double. Our guide will be wearing a red cap with The Perfect Vacation logo. We look forward to welcoming you there!
Nearest Train: RER B Pont au Double, Paris, France
Languages: English
Duration: 1.5 hours
Cancellation: Cancel up to 24 hours in advance for a full refund
“Our guide was very knowledgeable and helpful. We truly enjoyed our time with her. St Chapelle was incredible! 👍😊” – GetYourGuide review
Prices are the lowest per-person prices on GetYourGuide when I last checked; the final price depends on the date, time slot and age.
Official Sainte-Chapelle Tickets or GetYourGuide
The official site sells Sainte-Chapelle tickets at 22 euros for visitors from outside the EEA and 16 euros for EEA nationals and long-term residents, with a combined Sainte-Chapelle and Conciergerie ticket at 30 or 23 euros. An audio guide costs 4 euros on site, in six languages. Those official Sainte-Chapelle tickets are the cheapest way in if you only want the chapel and you qualify for the EEA price. They are also strict: the official FAQ says tickets are neither exchangeable nor refundable, whichever one you buy.
What the reseller tickets add is a guide, a walk through the rest of the island, or a free-cancellation window. Of the ten Sainte-Chapelle tickets here, eight cancel free up to 24 hours ahead, and two do not: the $28 combined ticket and the $223 Napoleone Tour are non-refundable. I’d buy official Sainte-Chapelle tickets when I know my date and want the chapel alone, and use a GetYourGuide listing for Sainte-Chapelle tickets when I want a guide or a flexible booking. The combined $28 ticket is close in price to the official 30 euro combined ticket, but currencies move, so compare at checkout.
What a Sainte-Chapelle Ticket Gets You Into
Every Sainte-Chapelle ticket opens the same building: a lower chapel and, up a narrow stair, the upper chapel with the tall stained-glass windows. The official homepage calls it a jewel of radiant Gothic and counts 1113 vitraux, its word for the stained-glass pieces. The upper chapel is why strollers are not allowed there, and the official FAQ suggests a baby carrier. The tickets differ in what comes around the chapel, not in the chapel itself, so the useful question is which extras you want from your Sainte-Chapelle tickets, and whether those Sainte-Chapelle tickets are worth the premium over the plain entry.
Sainte-Chapelle Tickets Skip the Line
Skip the line at Sainte-Chapelle means two different queues, and Sainte-Chapelle tickets cover only one. A reserved slot spares you the ticket desk. The security check remains because, per the official FAQ, the chapel stands inside the Palais de Justice and the checks are very strict. Entry is guaranteed within 30 minutes of the slot you selected, and the staff ask you not to turn up before it.
The Vox City International visit at $26 is the cheapest guided option: a reserved Sainte-Chapelle ticket plus a 60-minute guided tour of the interior and the Île de la Cité with a headset and radio, rated 4.4 from 190 reviews. Its own exclusions list skip the line, which sounds odd next to a reserved ticket, so I’d expect the same security check as everyone else. One reviewer wrote that the only wait was security, and minor.
Vox City International
Sainte-Chapelle Guided Tour & Reserved Entry Ticket
★4.4 (190 reviews)
1 - 1.5 hours
Free cancellation
My pick: The cheapest guided entry at $26: a reserved slot and a one-hour tour, 4.4 from 190 reviews; security still takes time.
What you get, where you meet, what reviewers say
Included
✓ Sainte-Chapelle reserved entry ticket
✓ Sainte-Chapelle interior and Île de la Cité guided tour (60 min)
✓ Live commentary in English
✓ Headset and radio
Not included / not suitable
✕ Tips for the guide
✕ Skip the line
Meeting point: Meeting point may vary depending on the option you select. Check availability for more details.
Languages: English
Duration: 1 - 1.5 hours
Cancellation: Cancel up to 24 hours in advance for a full refund
“Bridget was excellent! Def made the visit to Saint Chappell interesting and engaging! Thank you!” – GetYourGuide review
“the only wait we encountered was a security at Sainte-Chapelle but that was minor”
— GetYourGuide reviewer
Opening Hours and Getting There
Google Maps lists Sainte-Chapelle open 9 am to 5 pm every day. The official hours are 9 am to 5 pm from 1 October to 31 March and 9 am to 7 pm from 1 April to 30 September, with last entry 30 minutes before closing and closure on 1 January, 1 May and 25 December. The nearest metro stop is Cité, about a 3-minute walk. My Sainte-Chapelle opening hours and visitor guide has the day table, the best time to go and the security rules.
Which Ticket Fits You
Choosing between tickets for Sainte-Chapelle is mostly a question of whether you want a guide, Notre-Dame or the Conciergerie. The table is built from the listings, and the sections above give the detail.
Nine of the ten are walking tours, so the real choice is between the plain ticket and the cheapest walk. If you are still weighing Sainte-Chapelle tickets against each other, start from the first row and the second row, and only move down the table if you want Notre-Dame, a small group or another language. The higher rows buy a guide’s time, not a better view of the glass.
Near Sainte-Chapelle
Sainte-Chapelle sits on the Île de la Cité, and the walking times below are my estimates from straight-line distance, multiplied by 1.3 at 4.8 km/h. Your Sainte-Chapelle tickets open one building, and the Louvre is the main museum within easy reach; its entry is covered in my Louvre Museum tickets guide. For the other big sights, see Eiffel Tower tickets and Arc de Triomphe tickets, both across the city.
Notre-Dame Cathedral of Paris
Cathedral
★4.7 · 103,342 Google reviews
6 Parvis Notre-Dame - Pl. Jean-Paul II, 75004 Paris, France
Notre-Dame is about a 7-minute walk and the Panthéon about 17. The Tuileries Garden is roughly 25 minutes, and the Place de la Concorde and Palais Garnier about 34 each. The Hôtel des Invalides is around 38 minutes on foot, so I’d take the metro there.
How I’d Choose
Cheapest Sainte-Chapelle tickets: the $28 combined ticket with the Conciergerie, or the $26 Vox City visit if you want a guide.
A guide who explains the glass: the Memories France small group at $111, or Walks In Europe at $84 for a two-hour island walk.
First visit with Notre-Dame: the Perfect Vacation walk at $57 for 1.5 hours, or the Walks In Europe tour at $84.
Both churches properly: the $176 Walks In Europe tour, if you accept the interior of Notre-Dame is not promised.
In French or Italian: the Napoleone Tour at $223, non-refundable.
A whole day with the Louvre: the Extime Travel day at $133, with the sites visited on your own.
Frequently asked questions
Do I need tickets to Sainte-Chapelle?+
Yes, every visitor needs a ticket with a time slot, including children and visitors with free entry. The official site strongly recommends booking ahead because in busy periods you may wait a long time or not get in. Entry is guaranteed for 30 minutes after the slot you select, so arrive on time.
Can I buy Sainte-Chapelle tickets at the door?+
There is a ticket desk on site, but I wouldn't rely on it. The official FAQ warns of a very long wait, and even of not getting in, at busy times such as school holidays and Easter weekend. Booking a slot online, from the official site or a GetYourGuide listing, removes that risk.
How do I skip the line at Sainte-Chapelle?+
A reserved slot skips the ticket queue, but not security. The chapel sits inside the Palais de Justice, and the official FAQ says the checks are very strict and take time. A reviewer of the $28 combined ticket wrote that a reserved time is truly the fastest choice, so book a slot and arrive on time.
How much does it cost to enter Sainte-Chapelle?+
The official price is 22 euros for visitors from outside the European Economic Area and 16 euros for EEA nationals and long-term residents. Combined with the Conciergerie it is 30 and 23 euros. On GetYourGuide the combined ticket is $28 and guided visits with entry run from $26 to $223.
Is Sainte-Chapelle free on any day?+
Per the official site, entry is free on the first Sunday of January, February, March, November and December, and always for under-18s. A time slot is still needed. The next free Sundays are 6 December 2026 and 3 January 2027, so check the official ticket page before you plan around them.
How much time do I need to visit Sainte-Chapelle?+
The guided visits I compared run 75 minutes to 2 hours and include Notre-Dame's exterior, so the chapel itself is a shorter stop. The official FAQ puts the Conciergerie at 1 to 1.5 hours, which is why I'd allow about 30 to 45 minutes inside the chapel and a full morning for the combined ticket.
How far is Notre Dame from Sainte-Chapelle?+
About 0.45 km in a straight line, which I estimate at a 7-minute walk. Both sit on the Île de la Cité, which is why most of the tours I compared pair them. Notre-Dame's interior is a separate reserved slot and is not part of a Sainte-Chapelle ticket.
What is the official site for Sainte-Chapelle tickets?+
It is sainte-chapelle.fr, run by the Centre des monuments nationaux. It lists the hours, prices, free-entry rules and a ticket page. Its FAQ says only orders placed on the official ticket page can be handled by its staff, so any complaint about a reseller booking goes to the reseller.
Every Sainte-Chapelle ticket and tour I compared
Sainte-Chapelle and Conciergerie Combined Tickets★ 4.4
Louvre, Sainte-Chapelle, & Notre Dame Full Day Tour★ 4.2