AirHint found the following cheapest return flights from London (LHR) to Mexico City (MEX) in October 2025 (see full year).

Return flights

28 Oct - 12 Nov	Virgin Atlantic
28 Oct - 26 Nov	Iberia
28 Oct - 04 Nov	Iberia
30 Oct - 06 Nov	Finnair
30 Oct - 27 Nov	Finnair
30 Oct - 04 Nov	Finnair
28 Oct - 16 Nov	British Airways
28 Oct - 15 Nov	British Airways
29 Oct - 17 Nov	Finnair
30 Oct - 17 Nov	Finnair
23 Oct - 27 Oct	Air Canada
23 Oct - 28 Oct	Scandinavian Airlines
24 Oct - 27 Oct	Lufthansa
23 Oct - 26 Oct	Scandinavian Airlines
24 Oct - 26 Oct	Iberia
27 Oct - 31 Oct	Scandinavian Airlines
26 Oct - 29 Oct	Scandinavian Airlines
27 Oct - 29 Oct	Avianca
29 Oct - 29 Oct	British Airways
25 Oct - 28 Oct	Air France

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

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 London to Mexico City in October from 766€

Return flights