Honest, data-backed comparison
KAYAK vs Expedia.
Which is actually cheaper?
Short answer: on the same tax footing, close at about half the hotels, and Expedia was cheaper about 2.4 times as often when they differed. Google Hotels listed both at 1,663 hotels across our 15 price snapshots of September 25 to October 3, 2026. Where both prices were on the same tax footing (926 hotels), they were within $2 a night of each other at 47% of them. When one was more than 2% cheaper, it was KAYAK at 137 hotels (15%) and Expedia at 329 (36%). KAYAK's price on Google Hotels was often before tax (at 535 of the 1,421 hotels where taxes added 10% or more), so hotels where one price looked before tax and the other after are not counted. They belong to rival companies. Neither was always cheaper, so check both for your own dates.
Measured, not sponsored: the numbers come from our own price snapshots. If you book through a link from Underbook we may earn a commission from Expedia, at no cost to you, and it does not change what we show.
Measured, September 25 to October 3, 2026
What our price data shows
Across our 15 price snapshots of September 25 to October 3, 2026, 1,663 hotels were listed on both KAYAK and Expedia, and at 350 of them (21%) their lowest prices were the same to the dollar.
Before tax or after
At the 1,421 hotels listing both where taxes and fees added 10% or more to the going rate (the price most sites agreed on), KAYAK's price sat nearer the before-tax going rate at 535 of them and Expedia's at 25. Where one of the two prices looked before tax and the other after (528 hotels), the before-tax one looked lower at every one. Part or all of such a gap can be tax that is added at checkout, so those hotels are left out of the counts below, and so are the 209 hotels where taxes added between 2% and 10%, where neither price's basis could be read.
On the same tax footing
Counting only the 926 hotels where both prices were on the same footing (both after tax, both before tax, or no tax showing in the going rates: under 2%, often because no site reported taxes separately), their prices were within $2 a night of each other at 47% of them (434 hotels).
47%
within $2 a night of each other (434 of 926 hotels)
15%
KAYAK more than 2% cheaper (137 hotels)
36%
Expedia more than 2% cheaper (329 hotels)
So, on the same footing, neither site was always cheaper for the same hotel and dates, but when their prices differed, Expedia was the cheaper one about 2.4 times as often as KAYAK (329 hotels to 137). When Expedia was the cheaper one, it was typically 9% below KAYAK. Leaving out the hotels whose going rates showed under 2% tax, 893 hotels remain, where taxes added 10% or more and each price's basis could be read: KAYAK was more than 2% cheaper at 132 of them and Expedia at 318.
At the 329 hotels where Expedia was more than 2% cheaper, its lowest listing offered free cancellation at 37% of them and named a room type at 97%. Google Hotels showed no free-cancellation label and no room name on any KAYAK listing in our data, so the two cannot be compared on these. Check the room and the cancellation terms on both before you book.
Where each one came out cheaper
By region, on the same tax footing, Expedia's lead was largest in Europe: more than 2% cheaper at 44% of hotels there, KAYAK at 10%. KAYAK was not cheaper more often in any region; it came closest in the United States (more than 2% cheaper at 18% of hotels there, Expedia at 33%). At chain hotels the two were within $2 at 58%; at independent hotels at 38%, and most of the gaps were there.
| Where | Hotels | Within $2 | KAYAK 2%+ cheaper | Expedia 2%+ cheaper |
|---|---|---|---|---|
| United States | 493 | 47% | 18% | 33% |
| Europe | 251 | 42% | 10% | 44% |
| Canada, Mexico, Caribbean, Latin America | 110 | 55% | 8% | 36% |
| Asia-Pacific, Middle East, Africa | 72 | 51% | 21% | 24% |
| Chain hotels | 417 | 58% | 16% | 24% |
| Independent hotels | 509 | 38% | 14% | 45% |
How we measured: in each snapshot we recorded every booking site's price that Google Hotels showed a US searcher, in US dollars, for a two-night stay checking in between October 30 and November 7, 2026, at 6,239 hotels in 358 cities. For each hotel we took each site's lowest price, all-in with taxes and fees where the site reported them, otherwise its listed rate. Our data keeps one price per listing without saying whether it includes tax, so we infer it: where the hotel's after-tax going rate was 10% or more above its before-tax going rate, a price nearer the after-tax one counts as after tax and a price nearer the before-tax one as before tax; where the after-tax going rate was under 2% above the before-tax one (often because no site reported taxes separately), any two prices count as the same footing; hotels in between are left out. Within $2 means the two differed by $2 a night or less; more than 2% cheaper means one was below 98% of the other. The two can overlap on cheaper rooms (a $1.50 gap on a $60 room is both), which happened at 11 of these 926 hotels. A typical gap is the median, rounded down. A price we saw is one moment, not a completed booking. Method and the CSVs: our hotel price study.
Corrected October 2, 2026: an earlier version of this page compared the two prices at all 1,537 hotels listing both, including those where one price looked before tax and the other after, and said KAYAK was cheaper about twice as often when they differed (692 hotels to 357).
Who runs each site, and what else differs
KAYAK and Expedia are rival companies, and different kinds of site. KAYAK belongs to Booking Holdings (with Booking.com, Priceline and Agoda) and is a travel search engine that compares prices from hundreds of travel sites; Expedia belongs to Expedia Group (with Hotels.com, Vrbo, Orbitz and Travelocity), which calls it a full-service online travel brand.
- What KAYAK's price on Google Hotels was. On September 30, 2026 we opened KAYAK's offer at 5 hotels where it had been the cheapest site in our data. Each time KAYAK's page showed the price as KAYAK's own rate, with free cancellation, within $1 a night of what we had recorded before tax, and the other sites on the same KAYAK page were higher. Five hotels is a spot check, not a measurement.
- Where you book, and what you earn. KAYAK is free to use: you usually click through and book with the hotel or booking site you pick, and pay them, though some listings let you book with a third-party provider without leaving KAYAK (KAYAK labels these "Book on KAYAK"). Expedia's One Key earns OneKeyCash when you travel, which you can spend on later bookings on Expedia, Hotels.com or Vrbo.
- The all-in total. Taxes and mandatory resort fees can appear at different steps of checkout on each site. A lower headline rate can carry a higher final total, so read the price after fees on both.
- Member and app prices. Signing in, or booking on the app, sometimes shows a lower price on either site than the one you see logged out. Our snapshots recorded the public prices Google Hotels showed, without signing in to either site.
- Cancellation terms. A cheaper rate is often a non-refundable one. Compare like with like, and see whether free cancellation is worth it.
How to actually decide, in two minutes
- Open the same room and dates on both. Read the price after taxes and fees on KAYAK and on Expedia, and check that the room and bed type match.
- Sign in and re-check. A member price or a loyalty discount can change the answer once you are logged in.
- Add the hotel's own site as a third quote. Loyalty points and perks with the hotel usually only earn when you book direct.
- If you are not in a hurry, watch it. Prices move with demand. Book a refundable rate and rebook if the price drops.
More head-to-heads from the same price data: Expedia vs Booking.com, Expedia vs Hotels.com, Priceline vs Expedia, Agoda vs Expedia, Hotels.com vs Booking.com, Priceline vs Booking.com, Agoda vs Booking.com, Hotels.com vs Priceline, Agoda vs Priceline, Hotels.com vs Agoda, Trip.com vs Booking.com. For each site on its own, see whether KAYAK is legit and whether Expedia is legit. And if you wonder why one hotel has different prices at all, here is why prices differ across sites.
Doing this comparison automatically
Underbook is a free browser extension for Chrome, Edge and Firefox that runs this comparison while you shop. When you are viewing a hotel, it checks other booking sites for the same hotel and dates and shows the prices side by side: all-in, with taxes and fees, when the booking sites report them, otherwise the listed rate, labeled as such. When the cheaper listing does not name the same room, it says so plainly. It sends the hotel name, the town, your dates and party size to our price service (privacy), and you always book wherever you choose: KAYAK, Expedia, or direct. Prefer not to install anything? You can check one hotel's price and watch it by email.
KAYAK vs Expedia: common questions
Is KAYAK or Expedia cheaper for hotels?
Neither was always cheaper, but Expedia was cheaper more often when their prices differed on the same tax footing. Across our 15 price snapshots of September 25 to October 3, 2026, Google Hotels listed both at 1,663 hotels. Where both prices were on the same tax footing (926 hotels), their lowest prices were within $2 a night of each other at 47%. KAYAK was more than 2% cheaper at 137 hotels (15%) and Expedia at 329 (36%). At the 528 hotels where one price looked before tax and the other after, the before-tax one looked lower at every one, so those are not counted. Compare the same room's all-in total on both for your dates and take the lower confirmed one.
Are KAYAK and Expedia the same company?
No. KAYAK is a Booking Holdings brand, like Booking.com, Priceline and Agoda, and it is a travel search engine that compares prices from hundreds of travel sites. Expedia belongs to Expedia Group, like Hotels.com, Vrbo, Orbitz and Travelocity. In our data, on the same tax footing, their lowest prices were within $2 a night at 47% of 926 hotels; when they differed, Expedia was cheaper about 2.4 times as often as KAYAK.
Where was Expedia cheaper than KAYAK?
By region, on the same tax footing, Expedia's lead was largest in Europe: more than 2% cheaper at 44% of hotels there, KAYAK at 10%. KAYAK was not cheaper more often in any region; it came closest in the United States (more than 2% cheaper at 18% of hotels there, Expedia at 33%). At chain hotels the two were within $2 at 58%; at independent hotels at 38%, and most of the gaps were there.
Do you book on KAYAK or on Expedia?
KAYAK is a free travel search engine: you usually click through and book with the hotel or booking site you choose, and pay them, though some listings let you book with a third-party provider without leaving KAYAK. Expedia is a booking site in its own right, and its One Key program earns OneKeyCash you can spend on later Expedia, Hotels.com or Vrbo bookings. Either way, check who you are paying and the cancellation terms before you book.
How do I compare KAYAK and Expedia prices for my hotel?
Open the same room and dates on both, read the total after taxes and fees, and sign in to see any member price. Underbook, a free browser extension for Chrome, Edge and Firefox, shows booking sites' prices for your hotel and dates side by side, all-in where the sites report taxes and fees, and says whether the cheaper listing names your room. You can also check a hotel on underbook.co without installing anything.
Real prices, hotel by hotel
Every site's price at 5,814 hotels in 358 cities
From our price snapshots of September 25, 2026, September 28, 2026, September 29, 2026, September 30, 2026, October 1, 2026 and October 3, 2026: each hotel's page lists every booking site Google Hotels showed, the going rate, and whether the cheapest listing named a room, with a button to check today's price for your own dates.
By region: United States · Europe · Canada, Latin America, Caribbean · Asia-Pacific, Middle East, Africa
Start with a city: New York · Las Vegas · Orlando · Chicago · London · Cancun · Los Angeles · Miami · Fort Lauderdale · Nashville · New Orleans · Paris · Punta Cana · San Francisco · Honolulu · Charleston · Key West · Washington DC · Boston · Atlanta · Scottsdale · Myrtle Beach · Austin
Don't guess which is cheaper. See it.
Underbook compares the price for your hotel and dates, all-in where the sites report taxes and fees, across booking sites, so you can weigh KAYAK against Expedia at a glance. Free, and you always book where you choose.
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