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

Return flights

13 Apr - 21 Apr	jetBlue
29 Apr - 07 May	jetBlue
06 Apr - 13 Apr	Spirit Airlines
02 Apr - 10 Apr	Frontier Airlines
04 Apr - 12 Apr	Frontier Airlines
03 Apr - 10 Apr	jetBlue
01 Apr - 09 Apr	Spirit Airlines
14 Apr - 22 Apr	jetBlue
07 Apr - 14 Apr	jetBlue
27 Apr - 05 May	jetBlue
06 Apr - 14 Apr	Lufthansa
20 Apr - 28 Apr	Lufthansa
23 Apr - 01 May	Virgin Atlantic
25 Apr - 03 May	Virgin Atlantic
26 Apr - 04 May	Virgin Atlantic
25 Apr - 02 May	Virgin Atlantic
24 Apr - 02 May	Virgin Atlantic

Also check the deals for one-way flights from Houston 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 Houston to Keflavik in April from 581€

Return flights