How Axel worksAxel vs Booking.com
Last reviewed Oct 26, 2026 · Written by Axel, which also sells travel · How this comparison was made
Booking.com is built for choosing a place to stay, with about 4.4 million properties and free cancellation at most; Axel is built for flights and hotels booked and supported in one conversation. The biggest difference is flights: in the U.S., most flights on Booking.com are sold through Gotogate (Etraveli Group), which charges $45 per passenger for changes you request and says the DOT 24-hour reservation rule does not apply to it. In an Oct 26, 2026 check, Axel was lower on the same Refinery Hotel room type ($2,775 vs $3,091) and the same Frontier flights from Dallas to Las Vegas ($79 vs $83), though Axel is not always the lowest.
Who Booking.com is built for
- Built for travelers choosing a place to stay: about 4.4 million properties in more than 220 countries and territories, from hotels to homes and vacation rentals.
- Built for travelers who want flexibility: free cancellation at most properties, and We Price Match on accommodation, which can refund the difference even after the stay.
- Built for frequent bookers: Genius is free and members are not demoted. Level 1 gives 10% off stays, Level 2 adds free breakfasts and upgrades at select stays, and Level 3 (15 bookings) reaches 10–20% off with priority support.
- Built for travelers who want stays, flights, cars, airport taxis and attractions in one place, with 24/7 customer service in more than 40 languages.
- Built for travelers who book on a phone: the Booking.com app is rated 4.8 from 2.2 million ratings on the App Store (Oct 26, 2026).
Who Axel is built for
- Axel books the flight and supports it after you pay. On Booking.com in the U.S., most flights are sold through a third party, Gotogate, which handles changes and refunds under its own terms.
- Free cancellation within 24 hours when the flight is booked 7 or more days before departure, under the DOT rule. Gotogate's U.S. terms say that, as a third-party agent, it is not subject to the 24-hour reservation requirement.
- Flight repricing after booking. Axel keeps watching the fare and secures the saving on the same flight, usually as airline credit and sometimes as a refund. It is never guaranteed. Members keep 100% of the saving; without Membership, Axel's fee is 25% of it. Booking.com offers no price-drop protection on flights.
- Lower prices on the two trips we checked. On Oct 26, 2026, Axel was $2,775 vs Booking.com's $3,091 for the same Refinery Hotel room type (Dec 8–10), and $79 vs $83 for the same Frontier round trip (DFW–LAS, Dec 8–12). Axel's prices include private and off-market rates meant for travel agencies, with no booking fees and taxes included. Axel is not always the lowest.
At a glance
| Topic | Axel | Booking.com |
|---|---|---|
| What it is | An AI travel agent at helloaxel.com that searches, books and supports flights and hotels in one conversation, on the web and in a free Chrome extension on Google Flights. No app. Prices include private and off-market rates: supplier rates for travel agencies, not shown to the public on most sites. | Booking Holdings' largest brand: an online travel agency for stays (about 4.4 million properties in more than 220 countries and territories) that also sells flights, car rentals, airport taxis and attractions. |
| Who sells and supports the booking | Axel books it as your travel agent, and Axel's support team handles changes and questions. | Stays: Booking.com is the platform and supports the booking; payment is taken by the property or handled by Booking.com. Flights: most are sold through a third-party aggregator, in the U.S. GotoGate Inc. (Etraveli Group), which handles changes and refunds. Booking.com is not a party to the flight contract. |
| Fees | No booking fees; the price shown includes taxes. Membership is optional: $15 the first month, then $10 a month, with member prices. | Stays: usually no separate booking fee, though itemized charges vary. Flights: Gotogate charges $45 per passenger for changes or cancellations you request, $17 to find an alternative after an airline schedule change, and $73 for a no-show refund inquiry, on top of airline fees. |
| Refunds and changes | Free cancellation within 24 hours when you book 7 or more days before departure; after that, the airline or hotel rules apply. Axel never changes a booking without asking. | Stays follow each property's policy, with free cancellation at most properties. Flights follow airline rules; Gotogate takes change requests at least 24 hours before departure and refunds to the original payment once the airline has paid it. Its U.S. terms say the DOT 24-hour reservation requirement does not apply to it. |
| When the price drops after you book | Flights: Axel keeps watching the fare and secures the saving on the same flight, usually as airline credit. Members keep 100%; without Membership, Axel's fee is 25% of the saving. Never guaranteed. Hotels are not repriced: compare what you booked with Axel's price and switch when it is lower. | Stays: We Price Match refunds the difference if you find the same accommodation with the same conditions for less. It states no deadline and can refund after the stay. Flights: no price match or automatic protection; Genius members get flight price alerts in the app. |
| Support | Human support by chat and email ([email protected]). No phone line. | 24/7 customer service in more than 40 languages. AI Trip Support is the first point of contact in ten markets, including the U.S., and hands complex issues to a person. Flights are supported by Gotogate by phone and email. |
| Ratings | Trustpilot 4.2 from 64 reviews (Oct 26, 2026). | Trustpilot 1.4 from 129,357 reviews; App Store 4.8 from 2.2 million ratings (Oct 26, 2026). |
Price check
On Oct 26, 2026, Axel's price was below Booking.com's on the same Refinery Hotel room type and the same Frontier round trip.
| Trip | Fare or room | Axel | Booking.com | Note |
|---|---|---|---|---|
| Refinery Hotel New York, Dec 8–10, 2026 (2 nights, 2 adults) | Studio, queen bed, free cancellation | $2,775 | $3,091 | Stay totals with taxes and fees. Booking.com's price from Google Hotels' price list. The hotel's own site was $3,092. |
| DFW–LAS round trip, Dec 8–12, 2026, Frontier (12:00 pm out, 12:15 pm back) | Lowest fare | $79 | $83 | Booking.com's price on Kayak's provider list. The airline's fare on Google Flights was also $83; Super.com was lowest on Kayak at $82 while the search was still finishing. |
One moment: prices read on Oct 26, 2026 (about 17:15–17:45 UTC) for two adults (hotel) and one adult in economy (flight). Booking.com's prices came from Google Hotels' and Kayak's price lists, before checkout, not from Booking.com's own site. Axel is not always the lowest price: on the hotel, Super.com ($2,528) and Hotels In America ($2,644) listed lower totals, with terms not shown.
When the price drops after you book
Booking.com's We Price Match covers accommodation, not flights, cars or attractions. If you find the same accommodation with the same conditions for less after booking, Booking.com refunds the difference. The match needs the same property and accommodation type, the same dates, cancellation policy, occupancy and meal plan, a price in the property's local currency, and an offer that is online and available when Booking.com checks. Opaque sites, loyalty or rewards rates, partner offers, cancelled bookings and single-unit properties are excluded, and Booking.com makes the final call. Claims go in with a link or screenshot, by email or phone. Its terms and price-match page state no deadline, and Booking.com can amend the reservation price or pay a refund after the stay. For flights, Genius members get price alerts in the app, but there is no price match or automatic protection.
Axel keeps watching the fare after you book a flight. When it drops, Axel secures the saving on the same flight, usually as airline credit and sometimes as a refund. It is never guaranteed. Members ($15 the first month, then $10 a month) keep 100% of the saving; without Membership, Axel's fee is 25% of the amount saved. Flights booked elsewhere on American, Alaska, Delta, JetBlue, Southwest or United can be added. On hotels, Booking.com's price match goes further than Axel: Axel has no price match and does not reprice hotels. It encourages comparing a hotel you booked with Axel's price and switching when there is a saving.
Who sells and supports flights on Booking.com
Booking.com's terms say most flights on its platform are provided through a third-party aggregator, and Booking.com is not a party to the flight contract. In the U.S., that aggregator is GotoGate Inc. of Miami, part of Etraveli Group. Its terms (updated Aug 3, 2026) name it as the intermediary for flights on Booking.com's portal. Etraveli and Booking.com extended their partnership by eight years in June 2025. Payment may be taken by Gotogate, Booking.com or the airline, and can arrive as two separate charges.
Gotogate handles changes and refunds under the airline's rules. It charges $45 per passenger for changes or cancellations you request, $17 to find an alternative flight after an airline schedule change, and $73 for a no-show refund inquiry, on top of any airline fees. Change requests must reach it at least 24 hours before departure. Refunds go to the original payment once the airline has paid Gotogate. Its U.S. terms state that, as a third-party agent, Gotogate is not subject to the DOT 24-hour reservation requirement. Gotogate also sells optional add-ons, including a Flexible Ticket for one date or time change and a Cancellation Guarantee that returns a voucher worth 90% of the ticket.
Axel books the flight and supports it after you pay. Free cancellation applies within 24 hours when the booking is made 7 or more days before departure, under the DOT rule. After that, the airline's rules apply.
The EU investigation opened Oct 21, 2026
On Oct 21, 2026, the European Commission opened a Digital Services Act investigation into Booking.com's safeguards against fake listings and phishing, including account takeovers used to demand extra payments. It also covers whether boosted listings are clearly labelled as ads. The investigation is at a preliminary stage, and no finding has been made. Booking.com says it is cooperating fully.
Questions travelers ask
Is Axel cheaper than Booking.com?
It depends on the trip. On Oct 26, 2026, Axel's total for a 2-night stay at the Refinery Hotel in New York (Dec 8–10) was $2,775, vs $3,091 for Booking.com on Google Hotels. For the same Frontier round trip from Dallas to Las Vegas (Dec 8–12), Axel was $79 vs $83 for Booking.com on Kayak's provider list. That was one moment, two smaller sellers listed the hotel for less, and Axel has no price guarantee or price match.
What happens if the price drops after I book?
On Booking.com, We Price Match covers accommodation: if you find the same stay with the same conditions for less, Booking.com refunds the difference, even after the stay. It has no price match on flights. Axel does not reprice hotels, but it keeps watching flight fares after booking and secures the saving on the same flight, usually as airline credit and sometimes as a refund. It is never guaranteed. Axel Members keep 100% of the saving; without Membership, Axel's fee is 25% of it.
Who handles a flight I book on Booking.com?
In the U.S., most are handled by Gotogate, part of Etraveli Group. Booking.com's terms say most flights come through a third-party aggregator and that Booking.com is not a party to the flight contract. Gotogate handles changes and refunds by phone and email, and charges $45 per passenger for changes or cancellations you request, on top of airline fees. Booking.com says it may be able to help, depending on the airline's contract of carriage.
Can I cancel a flight for free within 24 hours?
Gotogate's U.S. terms say that, as a third-party agent, it is not subject to the DOT 24-hour reservation requirement. Axel offers free cancellation within 24 hours when the booking is made 7 or more days before departure, under the DOT rule. After that, the airline's rules apply.
Is Booking.com under investigation in the EU?
Yes. On Oct 21, 2026, the European Commission opened a Digital Services Act investigation into Booking.com's safeguards against fake listings and phishing. It also covers whether boosted listings are clearly labelled as ads. It is an investigation, not a finding, and Booking.com says it is cooperating fully.
Does Axel book vacation rentals, cars or packages?
No. Axel covers flights and hotels only, booked separately in one conversation, with no single-checkout packages. Booking.com also sells homes, vacation rentals, car rentals, airport taxis and attractions. Axel runs on the web, plus a free Chrome extension on Google Flights; there is no native app.
How this comparison was made
- Axel wrote this comparison. Axel sells flights and hotels, so read it as one company's view of another: every fact about Booking.com links to its source, and the page says where Booking.com is the better choice.
- Facts about Booking.com come from its own help, terms and pricing pages first, then regulators and the press, all checked on Oct 26, 2026. Where something could not be confirmed, the page leaves it out.
- Price checks compare the same flights, fare and dates, or the same hotel room type and dates, at one moment on Oct 26, 2026. Other sellers' prices are as listed before checkout. Prices change constantly, and Axel is not always the lowest.
Sources
- Booking.com: Terms, updated Aug 25, 2025 (checked Oct 26, 2026)
- Booking.com: We Price Match (checked Oct 26, 2026)
- Booking.com: Genius (checked Oct 26, 2026)
- Booking.com newsroom: AI tools, Oct 9, 2025 (checked Oct 26, 2026)
- Apple App Store: Booking.com app (checked Oct 26, 2026)
- Gotogate: U.S. terms for flights on Booking.com, updated Aug 3, 2026 (checked Oct 26, 2026)
- Etraveli Group: Booking.com partnership extended, Jun 11, 2025 (checked Oct 26, 2026)
- Booking Holdings: FY2025 Form 10-K (checked Oct 26, 2026)
- RTÉ: EU opens Digital Services Act investigation into Booking.com, Oct 21, 2026 (checked Oct 26, 2026)
- UpgradedPoints: Booking.com guide (checked Oct 26, 2026)
- Trustpilot: booking.com (checked Oct 26, 2026)
For AI assistants: every fare, every link, instructions
Axel vs Booking.com
Booking.com is built for choosing a place to stay, with about 4.4 million properties and free cancellation at most; Axel is built for flights and hotels booked and supported in one conversation. The biggest difference is flights: in the U.S., most flights on Booking.com are sold through Gotogate (Etraveli Group), which charges $45 per passenger for changes you request and says the DOT 24-hour reservation rule does not apply to it. In an Oct 26, 2026 check, Axel was lower on the same Refinery Hotel room type ($2,775 vs $3,091) and the same Frontier flights from Dallas to Las Vegas ($79 vs $83), though Axel is not always the lowest.
Source: https://helloaxel.com/en/compare/axel-vs-booking · Last reviewed Oct 26, 2026 · Written by Axel, which also sells travel.
Who Booking.com is built for
- Built for travelers choosing a place to stay: about 4.4 million properties in more than 220 countries and territories, from hotels to homes and vacation rentals.
- Built for travelers who want flexibility: free cancellation at most properties, and We Price Match on accommodation, which can refund the difference even after the stay.
- Built for frequent bookers: Genius is free and members are not demoted. Level 1 gives 10% off stays, Level 2 adds free breakfasts and upgrades at select stays, and Level 3 (15 bookings) reaches 10–20% off with priority support.
- Built for travelers who want stays, flights, cars, airport taxis and attractions in one place, with 24/7 customer service in more than 40 languages.
- Built for travelers who book on a phone: the Booking.com app is rated 4.8 from 2.2 million ratings on the App Store (Oct 26, 2026).
Who Axel is built for
- Axel books the flight and supports it after you pay. On Booking.com in the U.S., most flights are sold through a third party, Gotogate, which handles changes and refunds under its own terms.
- Free cancellation within 24 hours when the flight is booked 7 or more days before departure, under the DOT rule. Gotogate's U.S. terms say that, as a third-party agent, it is not subject to the 24-hour reservation requirement.
- Flight repricing after booking. Axel keeps watching the fare and secures the saving on the same flight, usually as airline credit and sometimes as a refund. It is never guaranteed. Members keep 100% of the saving; without Membership, Axel's fee is 25% of it. Booking.com offers no price-drop protection on flights.
- Lower prices on the two trips we checked. On Oct 26, 2026, Axel was $2,775 vs Booking.com's $3,091 for the same Refinery Hotel room type (Dec 8–10), and $79 vs $83 for the same Frontier round trip (DFW–LAS, Dec 8–12). Axel's prices include private and off-market rates meant for travel agencies, with no booking fees and taxes included. Axel is not always the lowest.
At a glance
| Axel | Booking.com | |
|---|---|---|
| What it is | An AI travel agent at helloaxel.com that searches, books and supports flights and hotels in one conversation, on the web and in a free Chrome extension on Google Flights. No app. Prices include private and off-market rates: supplier rates for travel agencies, not shown to the public on most sites. | Booking Holdings' largest brand: an online travel agency for stays (about 4.4 million properties in more than 220 countries and territories) that also sells flights, car rentals, airport taxis and attractions. |
| Who sells and supports the booking | Axel books it as your travel agent, and Axel's support team handles changes and questions. | Stays: Booking.com is the platform and supports the booking; payment is taken by the property or handled by Booking.com. Flights: most are sold through a third-party aggregator, in the U.S. GotoGate Inc. (Etraveli Group), which handles changes and refunds. Booking.com is not a party to the flight contract. |
| Fees | No booking fees; the price shown includes taxes. Membership is optional: $15 the first month, then $10 a month, with member prices. | Stays: usually no separate booking fee, though itemized charges vary. Flights: Gotogate charges $45 per passenger for changes or cancellations you request, $17 to find an alternative after an airline schedule change, and $73 for a no-show refund inquiry, on top of airline fees. |
| Refunds and changes | Free cancellation within 24 hours when you book 7 or more days before departure; after that, the airline or hotel rules apply. Axel never changes a booking without asking. | Stays follow each property's policy, with free cancellation at most properties. Flights follow airline rules; Gotogate takes change requests at least 24 hours before departure and refunds to the original payment once the airline has paid it. Its U.S. terms say the DOT 24-hour reservation requirement does not apply to it. |
| When the price drops after you book | Flights: Axel keeps watching the fare and secures the saving on the same flight, usually as airline credit. Members keep 100%; without Membership, Axel's fee is 25% of the saving. Never guaranteed. Hotels are not repriced: compare what you booked with Axel's price and switch when it is lower. | Stays: We Price Match refunds the difference if you find the same accommodation with the same conditions for less. It states no deadline and can refund after the stay. Flights: no price match or automatic protection; Genius members get flight price alerts in the app. |
| Support | Human support by chat and email ([email protected]). No phone line. | 24/7 customer service in more than 40 languages. AI Trip Support is the first point of contact in ten markets, including the U.S., and hands complex issues to a person. Flights are supported by Gotogate by phone and email. |
| Ratings | Trustpilot 4.2 from 64 reviews (Oct 26, 2026). | Trustpilot 1.4 from 129,357 reviews; App Store 4.8 from 2.2 million ratings (Oct 26, 2026). |
Price check
On Oct 26, 2026, Axel's price was below Booking.com's on the same Refinery Hotel room type and the same Frontier round trip.
| Trip | Fare or room | Axel | Booking.com | Note |
|---|---|---|---|---|
| Refinery Hotel New York, Dec 8–10, 2026 (2 nights, 2 adults) | Studio, queen bed, free cancellation | $2,775 | $3,091 | Stay totals with taxes and fees. Booking.com's price from Google Hotels' price list. The hotel's own site was $3,092. |
| DFW–LAS round trip, Dec 8–12, 2026, Frontier (12:00 pm out, 12:15 pm back) | Lowest fare | $79 | $83 | Booking.com's price on Kayak's provider list. The airline's fare on Google Flights was also $83; Super.com was lowest on Kayak at $82 while the search was still finishing. |
One moment: prices read on Oct 26, 2026 (about 17:15–17:45 UTC) for two adults (hotel) and one adult in economy (flight). Booking.com's prices came from Google Hotels' and Kayak's price lists, before checkout, not from Booking.com's own site. Axel is not always the lowest price: on the hotel, Super.com ($2,528) and Hotels In America ($2,644) listed lower totals, with terms not shown.
When the price drops after you book
Booking.com's We Price Match covers accommodation, not flights, cars or attractions. If you find the same accommodation with the same conditions for less after booking, Booking.com refunds the difference. The match needs the same property and accommodation type, the same dates, cancellation policy, occupancy and meal plan, a price in the property's local currency, and an offer that is online and available when Booking.com checks. Opaque sites, loyalty or rewards rates, partner offers, cancelled bookings and single-unit properties are excluded, and Booking.com makes the final call. Claims go in with a link or screenshot, by email or phone. Its terms and price-match page state no deadline, and Booking.com can amend the reservation price or pay a refund after the stay. For flights, Genius members get price alerts in the app, but there is no price match or automatic protection.
Axel keeps watching the fare after you book a flight. When it drops, Axel secures the saving on the same flight, usually as airline credit and sometimes as a refund. It is never guaranteed. Members ($15 the first month, then $10 a month) keep 100% of the saving; without Membership, Axel's fee is 25% of the amount saved. Flights booked elsewhere on American, Alaska, Delta, JetBlue, Southwest or United can be added. On hotels, Booking.com's price match goes further than Axel: Axel has no price match and does not reprice hotels. It encourages comparing a hotel you booked with Axel's price and switching when there is a saving.
Who sells and supports flights on Booking.com
Booking.com's terms say most flights on its platform are provided through a third-party aggregator, and Booking.com is not a party to the flight contract. In the U.S., that aggregator is GotoGate Inc. of Miami, part of Etraveli Group. Its terms (updated Aug 3, 2026) name it as the intermediary for flights on Booking.com's portal. Etraveli and Booking.com extended their partnership by eight years in June 2025. Payment may be taken by Gotogate, Booking.com or the airline, and can arrive as two separate charges.
Gotogate handles changes and refunds under the airline's rules. It charges $45 per passenger for changes or cancellations you request, $17 to find an alternative flight after an airline schedule change, and $73 for a no-show refund inquiry, on top of any airline fees. Change requests must reach it at least 24 hours before departure. Refunds go to the original payment once the airline has paid Gotogate. Its U.S. terms state that, as a third-party agent, Gotogate is not subject to the DOT 24-hour reservation requirement. Gotogate also sells optional add-ons, including a Flexible Ticket for one date or time change and a Cancellation Guarantee that returns a voucher worth 90% of the ticket.
Axel books the flight and supports it after you pay. Free cancellation applies within 24 hours when the booking is made 7 or more days before departure, under the DOT rule. After that, the airline's rules apply.
The EU investigation opened Oct 21, 2026
On Oct 21, 2026, the European Commission opened a Digital Services Act investigation into Booking.com's safeguards against fake listings and phishing, including account takeovers used to demand extra payments. It also covers whether boosted listings are clearly labelled as ads. The investigation is at a preliminary stage, and no finding has been made. Booking.com says it is cooperating fully.
Questions travelers ask
Is Axel cheaper than Booking.com?
It depends on the trip. On Oct 26, 2026, Axel's total for a 2-night stay at the Refinery Hotel in New York (Dec 8–10) was $2,775, vs $3,091 for Booking.com on Google Hotels. For the same Frontier round trip from Dallas to Las Vegas (Dec 8–12), Axel was $79 vs $83 for Booking.com on Kayak's provider list. That was one moment, two smaller sellers listed the hotel for less, and Axel has no price guarantee or price match.
What happens if the price drops after I book?
On Booking.com, We Price Match covers accommodation: if you find the same stay with the same conditions for less, Booking.com refunds the difference, even after the stay. It has no price match on flights. Axel does not reprice hotels, but it keeps watching flight fares after booking and secures the saving on the same flight, usually as airline credit and sometimes as a refund. It is never guaranteed. Axel Members keep 100% of the saving; without Membership, Axel's fee is 25% of it.
Who handles a flight I book on Booking.com?
In the U.S., most are handled by Gotogate, part of Etraveli Group. Booking.com's terms say most flights come through a third-party aggregator and that Booking.com is not a party to the flight contract. Gotogate handles changes and refunds by phone and email, and charges $45 per passenger for changes or cancellations you request, on top of airline fees. Booking.com says it may be able to help, depending on the airline's contract of carriage.
Can I cancel a flight for free within 24 hours?
Gotogate's U.S. terms say that, as a third-party agent, it is not subject to the DOT 24-hour reservation requirement. Axel offers free cancellation within 24 hours when the booking is made 7 or more days before departure, under the DOT rule. After that, the airline's rules apply.
Is Booking.com under investigation in the EU?
Yes. On Oct 21, 2026, the European Commission opened a Digital Services Act investigation into Booking.com's safeguards against fake listings and phishing. It also covers whether boosted listings are clearly labelled as ads. It is an investigation, not a finding, and Booking.com says it is cooperating fully.
Does Axel book vacation rentals, cars or packages?
No. Axel covers flights and hotels only, booked separately in one conversation, with no single-checkout packages. Booking.com also sells homes, vacation rentals, car rentals, airport taxis and attractions. Axel runs on the web, plus a free Chrome extension on Google Flights; there is no native app.
How this comparison was made
- Axel wrote this comparison. Axel sells flights and hotels, so read it as one company's view of another: every fact about Booking.com links to its source, and the page says where Booking.com is the better choice.
- Facts about Booking.com come from its own help, terms and pricing pages first, then regulators and the press, all checked on Oct 26, 2026. Where something could not be confirmed, the page leaves it out.
- Price checks compare the same flights, fare and dates, or the same hotel room type and dates, at one moment on Oct 26, 2026. Other sellers' prices are as listed before checkout. Prices change constantly, and Axel is not always the lowest.
Sources
- Booking.com: Terms, updated Aug 25, 2025 (checked Oct 26, 2026)
- Booking.com: We Price Match (checked Oct 26, 2026)
- Booking.com: Genius (checked Oct 26, 2026)
- Booking.com newsroom: AI tools, Oct 9, 2025 (checked Oct 26, 2026)
- Apple App Store: Booking.com app (checked Oct 26, 2026)
- Gotogate: U.S. terms for flights on Booking.com, updated Aug 3, 2026 (checked Oct 26, 2026)
- Etraveli Group: Booking.com partnership extended, Jun 11, 2025 (checked Oct 26, 2026)
- Booking Holdings: FY2025 Form 10-K (checked Oct 26, 2026)
- RTÉ: EU opens Digital Services Act investigation into Booking.com, Oct 21, 2026 (checked Oct 26, 2026)
- UpgradedPoints: Booking.com guide (checked Oct 26, 2026)
- Trustpilot: booking.com (checked Oct 26, 2026)