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

Return flights

09 Apr - 01 May	IndiGo
11 Apr - 18 Apr	Air Arabia
26 Apr - 03 May	Finnair
01 Apr - 11 Apr	SWISS
17 Apr - 03 May	Finnair
19 Apr - 25 Apr	Finnair
18 Apr - 25 Apr	Finnair
18 Apr - 03 May	Finnair
14 Apr - 03 May	Finnair
10 Apr - 19 Apr	Finnair
11 Apr - 21 Apr	Finnair
04 Apr - 14 Apr	Emirates
10 Apr - 18 Apr	SWISS
30 Apr - 09 May	Emirates
03 Apr - 17 Apr	SWISS
02 Apr - 17 Apr	KLM

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 732€

Return flights