Hipmunk, Skyscanner, KAYAK, Kiwi.com, Travelocity, Momondo, Flightics, Matrix (airfare search), Expedia, Skiplagged, FareFirst, PanFlights, TripTrav, StudentUniverse, jetLookup.com, Adioso, CNET Shopping, tripwolf, Plane Finder, Blimm, VaccationTravel, Orbitz, Future.Travel, Cheap Flights Booking, ScoreTrip, Owegoo, Tripchemy, Ski Deal Comparison, Voyages Booth, Fly Nimbus, Flight Finder, The Travel Professor, Flyzilla, Travel wiinkz, Flight Grabr, PaperFlies, Tripfixed, Blubyn, Bargain Travel, Flightlist, FlyGRN, CheapAir.com are some alternatives to Google Flights.