Cheap flights from London to Las Vegas from £362

In general, February is the cheapest month to fly from London to Las Vegas. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £555. If you’re not able to fly to Las Vegas in February, then March is your next best option. Flight prices from London to Las Vegas during March average around £573.

The cheapest day to depart on your flight to Las Vegas is on a Tuesday when prices can be found for as low as £622. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £705.

Our data shows that the cheapest London to Las Vegas flights are usually those with departure times in the morning. Our users have found flights to Las Vegas in the morning for as low as £632. Flights to Las Vegas are more costly at midday, with an average ticket price of £669. Departure times at midday fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Las Vegas from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around £643 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from London for as low as £600 on momondo.

There are 3 cabin classes available to choose from on London to Las Vegas Harry Reid Intl 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 31% on your flight if you consider stops on a London to Las Vegas flight.

As of February 2026, prices for London to Las Vegas flights are approximately 38% more expensive when compared to flights at the same time last year.

SWISS and British Airways are the most popular carriers operating from London to Las Vegas Harry Reid Intl

Virgin Atlantic, British Airways and KLM are the top three most popular airlines that fly to Las Vegas from London according to our data. Virgin Atlantic is the first choice among our users, with 51% of people opting to fly with this airline when travelling to Las Vegas. Keep in mind that there are 19 different airlines that fly to Las Vegas on a routine basis, so you have a few additional options to choose from.

Historically, on average around 15% of flights between London and Las Vegas have experienced a delay on any given week. The average delay length over the past 12 months has been 129 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, American Airlines have had the fewest delays on this route over the last 12 months, with about 6% of their flights experiencing any sort of delay.

Denver (DEN) was the most common stop: 30% of momondo users choosing one-stop flights on this route connected there.

Flights via Dublin (DUB) offer the lowest average return price of £368.

Flights connecting via Paris (CDG) have the shortest average one-way travel time: 13h 10m.

Salt Lake City (SLC) has the shortest average stopover time for this route: 1h 19m.

As of February 2026, there are 9 flights per day flying from London to Las Vegas. The most common time of day flights depart is 16:00, with 100% of flights taking off in the afternoon.

The number of flights available between London and Las Vegas is 68 per week as of February 2026. The most frequent departure day is Wed, with 18% of weekly flights leaving on this day.