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

Return flights

02 Apr - 14 Apr	Finnair
03 Apr - 18 Apr	Finnair
25 Apr - 04 May	Finnair
12 Apr - 20 Apr	Finnair
12 Apr - 21 Apr	Finnair
04 Apr - 18 Apr	Finnair
04 Apr - 11 Apr	Finnair
04 Apr - 14 Apr	Finnair
04 Apr - 12 Apr	Finnair
10 Apr - 17 Apr	Finnair
08 Apr - 18 Apr	SWISS

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.

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Cheapest return flights from Bangkok to Keflavik in April from 822€

Return flights