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

Return flights

09 Dec - 11 Jan	Scandinavian Airlines
09 Dec - 16 Dec	Spirit Airlines
11 Dec - 14 Dec	Spirit Airlines
07 Dec - 12 Dec	Spirit Airlines
10 Dec - 14 Dec	Spirit Airlines
14 Dec - 08 Jan	Frontier Airlines
07 Dec - 24 Dec	Air Canada
05 Dec - 11 Dec	Spirit Airlines
01 Dec - 10 Dec	Frontier Airlines
03 Dec - 09 Dec	Delta
11 Dec - 16 Dec	Spirit Airlines
07 Dec - 16 Dec	United
29 Dec - 10 Jan	Air Canada
13 Dec - 11 Jan	Frontier Airlines
30 Dec - 24 Jan	Finnair
12 Dec - 17 Jan	Spirit Airlines
05 Dec - 08 Jan	Air Canada
09 Dec - 11 Jan	British Airways	direct
30 Dec - 24 Jan	British Airways	direct
29 Dec - 06 Jan	Air France

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 509€

Return flights