Cheap flights from Las Vegas to London from £272

The cheapest month to fly to London from Las Vegas is in January. Flight prices, which tend to average around £508, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Las Vegas averaging around £535.

Our data shows that Sunday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £500. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Las Vegas to London for around £723.

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as £428. Flights in the evening are often more expensive, with an average ticket price of £601.

Fly from Las Vegas Harry Reid Intl to London Heathrow for the best Las Vegas Harry Reid Intl - London flight prices

You are more likely to see cheaper flights to London from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £693 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Las Vegas for as low as £554 on momondo.

There are 3 cabin classes available to choose from on Las Vegas Harry Reid Intl to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 8% on your flight if you consider stops on a Las Vegas to London flight.

As of March 2026, prices for Las Vegas to London flights are approximately 12% cheaper when compared to flights at the same time last year.

Salt Lake City (SLC) was the most common stop: 50% of momondo users choosing one-stop flights on this route connected there.

Flights via Salt Lake City (SLC) offer the lowest average return price of £451.

Flights connecting via Salt Lake City (SLC) have the shortest average one-way travel time: 12h 35m.

Salt Lake City (SLC) has the shortest average stopover time for this route: 1h 24m.

The number of flights available between Las Vegas and London is 8 per day as of March 2026. The most frequent departure time is 20:00, with 100% of daily flights leaving in the evening.

The number of flights available between Las Vegas and London is 59 per week as of March 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.