AirHint found the following cheapest return flights from Guadalajara (GDL) to London (LHR) in December 2025 (see full year).

Return flights

04 Dec - 09 Jan	United
12 Dec - 15 Dec	Air Canada
24 Dec - 06 Jan	Air Canada
16 Dec - 29 Dec	United
29 Dec - 10 Jan	United
26 Dec - 06 Jan	Air Canada
19 Dec - 06 Jan	Air Canada
20 Dec - 04 Jan	British Airways

Also check the deals for one-way flights from Guadalajara to London in December.

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 Guadalajara to London in December from $1037

Return flights