I prefer Kayak Explore for flexible itineraries since it basically just shows you the best price everywhere and you can filter by price, time of year, flight le

I prefer Kayak Explore for flexible itineraries since it basically just shows you the best price everywhere and you can filter by price, time of year, flight length: https://www.kayak.com/explore/ https://www.kayak.com/explore/ EDIT: And here's a ridiculous itinerary it found for reference: $286, LAX <-> Oslo Round Trip, December 2 - 6, Norwegian Airlines: https://www.kayak.com/flights/LAX-OSL/2016-12-02/2016-12-06/ https://www.kayak.com/flights/LAX-OSL/2016-12-02/2016-12-06/