Flight search compared · 2026
Hopper vs Kayak
Kayak is a search engine that sends you to the airline to book, while Hopper is a travel agency that sells you the ticket itself. Booking directly with the airline usually makes changes, refunds and elite perks easier.
Verified Oct 17, 2026By Steven MoHow we check Report a correction
Quick verdict
Kayak is a search engine that sends you to the airline to book, while Hopper is a travel agency that sells you the ticket itself. Booking directly with the airline usually makes changes, refunds and elite perks easier. Use Hopper for locking a fare with a Price Freeze while you decide; use Kayak for comparing travel agencies and finding mixed-airline Hacker Fares.
- Hopper
- Online travel agency (app). Best for locking a fare with a price freeze while you decide.
- Kayak
- Metasearch. Best for comparing travel agencies and finding mixed-airline hacker fares.
Side by side
| Hopper | Kayak | |
|---|---|---|
| Where you book | A travel agency: you book and pay through Hopper, and changes go through Hopper | Search engine: links you to the airline or a travel agency to book, with some bookings on Kayak itself |
| Price alerts | Watches a route and notifies you when to buy | Price Alerts by email or app when a tracked search goes up or down |
| Price predictions | Buy-or-wait predictions based on historical prices | Price Forecast: a buy-now-or-wait signal from historical prices |
| Flexible dates | Color-coded price calendar | Flexible dates and price calendars |
| Explore by destination | No map-style destination search | Explore map for destination ideas within a budget |
| Price freeze and protection | Paid add-ons: Price Freeze, Flight Disruption Guarantee and cancel or change for any reason | No paid price freeze; Hacker Fares combine one-way tickets on different airlines, each a separate contract |
| Fees and rewards | Add-ons cost extra and their prices vary by trip | No booking fees from Kayak when you book through a partner |
Watch out for
Hopper
Add-ons add up, and fixing problems means going through Hopper rather than the airline.
Kayak
Hacker Fares are separate tickets: if one flight changes, the other airline doesn't have to help.
Whichever you use, add the bags you'll actually bring before comparing prices: our bag fee calculator and carry-on checker cover most airlines.
FAQ
Kayak is a search engine that sends you to the airline to book, while Hopper is a travel agency that sells you the ticket itself. Booking directly with the airline usually makes changes, refunds and elite perks easier. Use Hopper for locking a fare with a Price Freeze while you decide; use Kayak for comparing travel agencies and finding mixed-airline Hacker Fares.
More comparisons
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Sources
Last verified Oct 17, 2026. Features change often; check each site for the current version.
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