Cheapest return flights from Houston to Keflavik in May from $713

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

Return flights

25 May - 01 Jun WestJet
09 May - 17 May Spirit Airlines
25 May - 02 Jun WestJet
19 May - 26 May Spirit Airlines
20 May - 29 May Spirit Airlines
20 May - 27 May Spirit Airlines
21 May - 28 May Spirit Airlines
23 May - 30 May Spirit Airlines
22 May - 29 May Spirit Airlines
26 May - 03 Jun Spirit Airlines
27 May - 04 Jun WestJet
29 May - 06 Jun Spirit Airlines
30 May - 07 Jun Spirit Airlines
23 May - 04 Jun Spirit Airlines
22 May - 04 Jun Spirit Airlines
28 May - 05 Jun Spirit Airlines
31 May - 08 Jun WestJet
24 May - 31 May Spirit Airlines

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

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