AirHint found the following cheapest return flights from Las Vegas (LAS) to London (STN) in December 2025 (see full year).

Return flights

18 Dec - 17 Jan	Aer Lingus
17 Dec - 19 Dec	Austrian Airlines
27 Dec - 31 Dec	Air Canada
17 Dec - 27 Dec	Austrian Airlines
16 Dec - 24 Dec	Aer Lingus
18 Dec - 11 Jan	Aer Lingus
30 Dec - 05 Jan	Aer Lingus
21 Dec - 27 Dec	Austrian Airlines
18 Dec - 26 Dec	Spirit Airlines
17 Dec - 25 Dec	Lufthansa
30 Dec - 04 Jan	Aer Lingus
18 Dec - 01 Jan	Aer Lingus
18 Dec - 19 Dec	Aer Lingus
16 Dec - 18 Dec	jetBlue
19 Dec - 22 Dec	Frontier Airlines

Also check the deals for one-way flights from Las Vegas 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 Las Vegas to London in December from $1210

Return flights