Cheapest return flights from Houston to Keflavik in May from $442

Best time to book flights for Houston (IAH) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Houston (IAH) to Keflavik (KEF) in May 2025 (see full year).

Return flights

01 May - 06 May Spirit Airlines
13 May - 20 May Spirit Airlines
21 May - 29 May Spirit Airlines
14 May - 21 May Spirit Airlines
20 May - 28 May Spirit Airlines
14 May - 25 May Spirit Airlines
07 May - 15 May Spirit Airlines
08 May - 15 May Spirit Airlines
16 May - 23 May Frontier Airlines
25 May - 02 Jun Spirit Airlines
06 May - 13 May Spirit Airlines
27 May - 03 Jun Spirit Airlines
28 May - 05 Jun Spirit Airlines
30 May - 07 Jun Spirit Airlines
24 May - 04 Jun Spirit Airlines
27 May - 04 Jun Spirit Airlines
26 May - 03 Jun Spirit Airlines
24 May - 01 Jun Frontier Airlines

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

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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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