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

Return flights

06 May - 20 May	Volaris
06 May - 27 May	Avianca
02 May - 20 May	Air Canada
12 May - 27 May	Air Canada
19 May - 02 Jun	Volaris
20 May - 28 May	Air Canada
25 May - 04 Jun	Air Canada
27 May - 03 Jun	Air Canada
14 May - 23 Jun	Air Canada
27 May - 18 Jun	Air Canada
11 May - 27 May	Air Canada
18 May - 01 Jun	Air Canada
16 May - 16 Jun	Air Canada
06 May - 21 May	Air Canada
07 May - 21 May	Air Canada
14 May - 01 Jun	Air Canada
05 May - 12 May	Air Canada
12 May - 20 May	Air Canada
17 May - 02 Jun	Air Canada
31 May - 10 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 689€

Return flights