AirHint found the following cheapest return flights from Houston (IAH) to Keflavik (KEF) in April 2026 (see full year).
Return flights
| 14 Apr - 21 Apr | jetBlue | ||
| 02 Apr - 09 Apr | Frontier Airlines | ||
| 24 Apr - 01 May | jetBlue | ||
| 02 Apr - 07 Apr | Spirit Airlines | ||
| 16 Apr - 23 Apr | Lufthansa | ||
| 19 Apr - 27 Apr | WestJet | ||
| 18 Apr - 27 Apr | Lufthansa |
Also check the deals for one-way flights from Houston to Keflavik in April.
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