Cheapest return flights from Houston to Keflavik in May from 583€

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

Return flights

12 May - 19 May Finnair
11 May - 18 May Lufthansa
13 May - 20 May United
14 May - 21 May United
17 May - 24 May United
18 May - 25 May United
15 May - 22 May Finnair
09 May - 17 May Lufthansa
16 May - 23 May Virgin Atlantic
05 May - 13 May Air France

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

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