AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to London (LHR) in December 2025 (see full year).

Return flights

02 Dec - 16 Dec	Lufthansa
09 Dec - 16 Dec	Lufthansa
03 Dec - 09 Dec	Finnair
08 Dec - 19 Jan	Finnair
02 Dec - 27 Jan	Finnair
30 Dec - 13 Jan	Finnair
03 Dec - 14 Jan	Finnair
02 Dec - 13 Jan	Finnair
02 Dec - 12 Jan	Finnair
01 Dec - 28 Jan	Finnair
01 Dec - 12 Jan	Finnair
01 Dec - 13 Jan	Finnair
29 Dec - 13 Jan	Finnair
02 Dec - 16 Dec	Finnair	direct
06 Dec - 16 Dec	Virgin Atlantic
09 Dec - 16 Dec	Finnair	direct
03 Dec - 07 Dec	Finnair
03 Dec - 09 Dec	British Airways	direct
09 Dec - 19 Dec	Iberia	direct
01 Dec - 14 Dec	Finnair

Also check the deals for one-way flights from Dallas-Fort Worth 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 Dallas-Fort Worth to London in December from 413€

Return flights