Cheap flights from London to Las Vegas from $412

The month of February is, on average, the cheapest month to fly to Las Vegas from London, with most prices found around $773. The month of March is another great option to travel to Las Vegas, with average flight prices from London averaging around $788.

Our data shows that Wednesday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $930. Flights from London to Las Vegas on a Friday 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 in the morning when flights can be purchased for as low as $926. Flights to Las Vegas are more costly in the afternoon, with an average ticket price of $1,003. 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 $881 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 $821 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 35% on your flight if you consider stops on a London to Las Vegas flight.

As of March 2026, prices for London to Las Vegas flights are approximately 44% more expensive when compared to flights at the same time last year.

WestJet, JetBlue, and SWISS are the most popular carriers operating from London to Las Vegas Harry Reid Intl

British Airways, Virgin Atlantic and Delta 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 45% 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 14% 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 early afternoon tend to experience fewer delays. Flights in the morning 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. Sunday 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 11% of their flights experiencing any sort of delay.

New York (JFK) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Calgary (YYC) offer the lowest average round-trip price of $192.

Flights connecting via Calgary (YYC) have the shortest average one-way travel time: 15h 15m.

New York (JFK) has the shortest average layover time for this route: 2h 15m.

The number of flights available between London and Las Vegas is 9 per day as of March 2026. The most frequent departure time is 4:00PM, with 100% of daily flights leaving in the afternoon.

As of March 2026, 63 flights take off from London and land in Las Vegas each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.