AirHint found the following cheapest return flights from Austin (AUS) to London (LGW) in December 2025 (see full year).

Return flights

01 Dec - 10 Dec	Hawaiian Airlines
15 Dec - 31 Dec	Air Canada
13 Dec - 31 Dec	Air Canada
16 Dec - 04 Jan	Air Canada
12 Dec - 04 Jan	Air Canada
23 Dec - 05 Jan	Lufthansa
12 Dec - 05 Jan	Air Canada
15 Dec - 04 Jan	Air Canada
27 Dec - 06 Jan	Turkish Airlines
26 Dec - 06 Jan	Turkish Airlines
28 Dec - 06 Jan	Turkish Airlines
12 Dec - 02 Jan	Turkish Airlines
18 Dec - 04 Jan	Turkish Airlines

Also check the deals for one-way flights from Austin 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 Austin to London in December from $1092

Return flights