AirHint found the following cheapest return flights from Bangkok (BKK) to Keflavik (KEF) in April 2026 (see full year).

Return flights

14 Apr - 25 Apr	Finnair
03 Apr - 10 Apr	Finnair
07 Apr - 16 Apr	Finnair
06 Apr - 16 Apr	Finnair
04 Apr - 17 Apr	Finnair
04 Apr - 15 Apr	Finnair
10 Apr - 17 Apr	Qatar Airways
10 Apr - 19 Apr	Qatar Airways
10 Apr - 18 Apr	Qatar Airways
02 Apr - 17 Apr	Emirates

Also check the deals for one-way flights from Bangkok to Keflavik in April.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Bangkok to Keflavik in April from $999

Return flights