Cheap flights from London to Las Vegas from $491

The month of January is, on average, the cheapest month to fly to Las Vegas from London, with most prices found around $716. The month of February is another great option to travel to Las Vegas, with average flight prices from London averaging around $804.

Our data shows that Monday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $880. Flights from London to Las Vegas on a Sunday will generally be more expensive and average around $1,072. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

The cheapest time of day to fly to Las Vegas is at noon when flights can be purchased for as low as $844. Flights to Las Vegas are more costly in the afternoon, with an average ticket price of $1,014. Departure times in the afternoon 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 $876 when searching weeks out. 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 $772 on momondo.

You could potentially save up to 4% on your flight if you consider stops on a London to Las Vegas flight.

As of May 2026, prices for London to Las Vegas flights are approximately 13% more expensive when compared to flights at the same time last year.

JetBlue, United Airlines, and Finnair are the most popular carriers operating from London to Las Vegas Harry Reid Intl

British Airways, Delta and Virgin Atlantic are the top three most popular airlines that fly to Las Vegas from London according to our data. British Airways is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Las Vegas. Keep in mind that there are 4 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 16% 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 122 minutes.

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

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

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

The number of flights available between London and Las Vegas is 10 per day as of May 2026. The most frequent departure time is 5:00PM, with 95% of daily flights leaving in the afternoon.

As of May 2026, 75 flights take off from London and land in Las Vegas each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.