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

Return flights

28 Dec - 09 Jan	Delta
29 Dec - 28 Jan	Delta	direct
31 Dec - 10 Jan	Austrian Airlines
31 Dec - 08 Jan	Frontier Airlines
28 Dec - 09 Jan	Air France	direct
31 Dec - 08 Jan	British Airways	direct
30 Dec - 06 Jan	Air France	direct
27 Dec - 03 Jan	Hawaiian Airlines
27 Dec - 03 Jan	British Airways	direct

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 796€

Return flights