Cheapest return flights from Houston to Keflavik in April from $545

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

Return flights

14 Apr - 22 Apr Spirit Airlines
21 Apr - 29 Apr Spirit Airlines
07 Apr - 15 Apr Spirit Airlines
28 Apr - 05 May Spirit Airlines
11 Apr - 18 Apr Spirit Airlines
12 Apr - 19 Apr Frontier Airlines
28 Apr - 06 May Spirit Airlines
27 Apr - 04 May Spirit Airlines
09 Apr - 16 Apr Frontier Airlines
10 Apr - 17 Apr Spirit Airlines
26 Apr - 03 May Spirit Airlines
06 Apr - 13 Apr Spirit Airlines
03 Apr - 10 Apr jetBlue
05 Apr - 12 Apr Frontier Airlines

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

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