AirHint found the following cheapest return flights from Mexico City (MEX) to London (LHR) in May 2026 (see full year).

Return flights

12 May - 20 May	Air Canada
05 May - 13 May	Air Canada
06 May - 13 May	Air Canada
13 May - 20 May	Air Canada
12 May - 19 May	Air Canada
09 May - 21 May	Air Canada
01 May - 12 May	Air Canada
08 May - 16 May	Air Canada
22 May - 27 May	Air Canada
01 May - 09 May	Air Canada
20 May - 03 Jun	Air Canada
19 May - 02 Jun	Air Canada
31 May - 17 Jun	Air Canada
20 May - 20 Jun	Lufthansa
31 May - 07 Jun	Air Canada
19 May - 07 Jun	Lufthansa
14 May - 07 Jun	Aer Lingus
20 May - 20 Jun	Aeromexico	direct
13 May - 06 Jun	Delta
31 May - 17 Jun	Aeromexico	direct

Also check the deals for one-way flights from Mexico City to London in May.

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 London in May from $876

Return flights