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

Return flights

03 May - 19 May	Iberia
14 May - 21 May	Air Canada
14 May - 26 May	Air Canada
05 May - 19 May	Air Canada
05 May - 12 May	Air Canada
12 May - 19 May	Iberia
04 May - 17 May	Air Canada
19 May - 26 May	Iberia
05 May - 26 May	Air Canada
10 May - 17 May	Air Canada
18 May - 03 Jun	Air Canada
26 May - 02 Jun	Air Canada
20 May - 09 Jun	Air Canada
03 May - 04 Jun	Delta
05 May - 09 Jun	Air Canada
21 May - 05 Jun	Air Canada
02 May - 03 Jun	Air Canada
01 May - 02 Jun	Virgin Atlantic
09 May - 05 Jun	Air Canada
26 May - 11 Jun	Air Canada

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 725€

Return flights