Netflights
Flights
UK OTA specializing in flight deals with hotel and car add-ons. Strong for comparing global routes and carriers.
Opodo
Flights
European OTA for flights, hotels, cars, and packages with solid airfare tools. Helpful for mixing carriers and finding competitive itineraries.
Skyscanner
Flights
Skyscanner is a global flight meta-search engine that compares fares from airlines and online travel agencies to help travelers find the best deals.
TravelSupermarket
Flights
TravelSupermarket is a UK-based travel comparison site specializing in flights, hotels, and packages.