AirHint found the following cheapest return flights from Mexico City (MEX) to Keflavik (KEF) in May 2026 (see full year).
Return flights
| 25 May - 01 Jun | Viva | ||
| 26 May - 02 Jun | Delta | ||
| 31 May - 12 Jun | Viva | ||
| 29 May - 14 Jun | KLM | ||
| 23 May - 08 Jun | Volaris | ||
| 24 May - 31 May | Avianca | ||
| 21 May - 06 Jun | Viva |
Also check the deals for one-way flights from Mexico City to Keflavik in May.
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