605 private links
- ITA Matrix (aggregator, how-to and background)
- Skiplagged (aggregator, also searches for throwaway tickets)
- Skyscanner (aggregator)
- Kayak (aggregator, part of Booking Holdings Inc.)
- Google Flights (aggregator)
- Momondo (aggregator, danskt bolag, sköts av Kayak som är en del av Booking Holdings Inc.)
- Expedia (aggregator/OTA)
- CheapOAir (OTA)
- Booking.com (aggregator)
- Agoda (aggregator/OTA, part of Booking Holdings Inc.)
- Orbitz (OTA)
- Sembo (OTA, Helsingborg, Stena Line Travel Group AB) [SRF ✔]
- Allaflygbiljetter.se (aggregator)
- Flygresor.se (aggregator, Flightmate AB, part of Etraveli Group AB) [SRF ✔]
- SuperSaver (aggregator, Svenska Resegruppen AB, part of Etraveli Group AB) [SRF ✔]
- Travelstart (aggregator, Svenska Resegruppen AB, part of Etraveli Group AB) [SRF ✔]
- Travelpartner (aggregator, Svenska Resegruppen AB, part of Etraveli Group AB) [SRF ✔]
- Seat24 (aggregator, Svenska Resegruppen AB, part of Etraveli Group AB) [SRF ✔]
- Ticket.se (OTA, ägs av Braganza) [SRF ✔]
- Flygstolen.se (OTA, ägs av Otravo) [SRF ✔]
- JetRadar (aggregator) prices in USD/EUR
- Hotwire (OTA) prices in USD
- Travelocity (OTA) priser i USD
- SecretFlying
- BilligaFlygbiljetter.se (aggregator, ägs av Vuelos Baratos Ltd.)
- Travelgenio (ägs av Otravo)
You can also book tickets directly from many airlines.
Review articles
https://upgradedpoints.com/best-websites-for-booking-cheap-flights
https://www.frommers.com/slideshows/848046-the-10-best-and-worst-airfare-search-sites
https://www.topfivebuzz.com/20-best-flight-search-engines-for-international-flights-to-find-cheapest-airfares/
https://www.forbes.com/sites/johnnyjet/2017/10/04/5-best-online-tools-for-searching-flights/
An aggregator is only as good as the OTAs (online travel agencies) it canvasses. There are booking engines that find prices themselves (Expedia, Priceline, Hotwire). And then there are aggregators—sites that do not book tickets but instead search dozens of booking engines, airfare sites, and OTAs and compile the results in one place; you then click through to the one of your choice to make the actual purchase.
https://www.frommers.com/slideshows/848046-the-10-best-and-worst-airfare-search-sites