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

Return flights

12 May - 26 May	Iberia
13 May - 20 May	Iberia
11 May - 24 May	Iberia
16 May - 26 May	Iberia
09 May - 19 May	Iberia
04 May - 13 May	British Airways
13 May - 30 May	Iberia
22 May - 29 May	Aeromexico
14 May - 01 Jun	Air Canada
12 May - 01 Jun	Air Canada
01 May - 08 May	Volaris
05 May - 16 Jun	Air Canada
21 May - 31 May	Air Canada
01 May - 02 Jun	Air Canada
21 May - 06 Jun	Air Canada
13 May - 13 Jun	Delta
29 May - 30 Jun	Virgin Atlantic
27 May - 07 Jun	Delta
12 May - 01 Jun	British Airways	direct
14 May - 01 Jun	British Airways	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 $897

Return flights