AirHint found the following cheapest return flights from Mexico City (MEX) to Keflavik (KEF) in July 2025 (see full year).

Return flights

29 Jul - 05 Aug	Delta
15 Jul - 22 Jul	Delta
10 Jul - 22 Jul	Delta
17 Jul - 20 Jul	Viva
09 Jul - 16 Jul	Delta
18 Jul - 24 Jul	WestJet
19 Jul - 28 Jul	Delta
14 Jul - 24 Jul	Aeromexico
08 Jul - 21 Jul	Delta
26 Jul - 03 Aug	Avianca
21 Jul - 28 Jul	Aeromexico
11 Jul - 18 Jul	Delta
26 Jul - 09 Aug	Aeromexico

Also check the deals for one-way flights from Mexico City to Keflavik in July.

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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Cheapest return flights from Mexico City to Keflavik in July from $984

Return flights