Momondo surfaced a multi-leg flight combination that was cheaper than anything the big sites offered, and the price held all the way through to the provider's checkout. The interface is clean and the inspiration tools are fun for trip planning. Saved me a real amount on long-haul.
Unearths deals others miss
Momondo's price calendar and flexible-date view helped me find a far cheaper week to fly than I'd planned, and the colour-coded results make comparing easy. The actual booking happens on third-party sites, so checking their reliability is on you. Still a great research tool.
Excellent flexible-date price view
Booking handled by third parties
Momondo is great for getting a quick sense of the cheapest options across airlines, and I like the clean layout. But a couple of times the fare shown didn't match what I found on the airline's own site. Handy as a starting point, just verify before you commit.
Quick cross-airline overview
Quoted prices not always accurate
I always check Momondo first because it pulls in providers the mainstream sites skip and the trends feature shows whether to book now or wait. It helped me lock in a good hotel-and-flight week for Greece. The redirect to third-party sites for payment is the only mild inconvenience.
Broad provider coverage and price trends
Redirects to third parties to pay
Momondo showed a brilliant fare that vanished the moment I clicked through to the booking provider, where the price jumped by a noticeable amount. After trying three listed deals with the same result, I gave up. A metasearch that surfaces prices you can't actually get is more frustrating than useful.
Listed fares disappeared on the booking site