AirHint found the following cheapest one-way flights from Las Vegas (LAS) to London (LHR) in September 2025 (see full year).

One-Way flights

27 Sep	Frontier Airlines
24 Sep	Spirit Airlines
26 Sep	Spirit Airlines
28 Sep	Hawaiian Airlines
23 Sep	Spirit Airlines
25 Sep	Spirit Airlines
21 Sep	jetBlue
20 Sep	jetBlue
30 Sep	Delta	direct
28 Sep	American Airlines	direct

Also check the deals for return flights from Las Vegas to London in September.

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 one-way flights from Las Vegas to London in September from $289

One-Way flights