AirHint found the following cheapest return flights from Houston (HOU) to Keflavik (KEF) in May 2026 (see full year).
Return flights
| 19 May - 26 May | Air France | ||
| 27 May - 03 Jun | United | ||
| 29 May - 05 Jun | United | ||
| 28 May - 04 Jun | United | ||
| 09 May - 17 May | Lufthansa | ||
| 31 May - 07 Jun | United | ||
| 30 May - 06 Jun | United | ||
| 20 May - 27 May | Air France |
Also check the deals for one-way flights from Houston to Keflavik in May.
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