Reykjavik (KEF) to Bangkok (BKK): 6,305 miles (10,146 km) great-circle, about 13h 05m nonstop by our estimate. Cheapest fare observed: $1205 round-trip on easyJet, with 2 stops, departing April 25, 2026.
$1205 round-trip, easyJet U23972, departing 2026-04-25 at 17:50, returning 2026-05-02. The recorded itinerary left on a Saturday, returning on a Saturday 7 nights later; the fare was observed 0 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $1205, it ranked 28th of the 30 round-trip fares we recorded from KEF (median $398). That is 19.1 cents per great-circle mile (round-trip price over one-way distance), close to the KEF median of 20.6 cents across 30 round-trip routes.
Routes from KEF of similar length: Da Nang (6,326 mi) at $1135 and Cape Town (7,131 mi) at $1533.
easyJet had the cheapest fare on 7 of 30 KEF routes. It is the 3rd longest of the 30 routes we track from KEF.
Of 59 departure airports with a fare to Bangkok, Reykjavik (KEF) ranked 52nd at $1205. Lowest: $73 from Phuket (HKT); highest: $1428 from Mexico City (MEX); 14 nonstop. Cheapest-fare airlines (routes): Air India (5), Etihad (5), Thai Vietjet Air (4), Air China (3), Scoot (3) and Thai AirAsia (3), plus 31 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Atlantic/Reykjavik, Asia/Bangkok; flight time is our estimate.