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

Return flights

03 Dec - 07 Dec	Spirit Airlines
03 Dec - 08 Dec	Finnair
09 Dec - 16 Dec	Finnair
09 Dec - 15 Dec	Air Canada
02 Dec - 09 Dec	British Airways	direct
03 Dec - 10 Dec	British Airways	direct
07 Dec - 14 Dec	British Airways
04 Dec - 11 Dec	Spirit Airlines
29 Dec - 24 Jan	Finnair
09 Dec - 15 Dec	Finnair	direct
03 Dec - 08 Dec	Iberia	direct
29 Dec - 24 Jan	British Airways	direct
16 Dec - 12 Jan	Finnair
15 Dec - 10 Jan	Spirit Airlines
13 Dec - 10 Jan	jetBlue
15 Dec - 10 Jan	British Airways	direct
16 Dec - 10 Jan	Finnair
23 Dec - 17 Jan	Air Canada
22 Dec - 17 Jan	Air Canada
16 Dec - 10 Jan	British Airways	direct

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 516€

Return flights