Cheap flights from Las Vegas to London from $395

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Las Vegas, with most prices found around $671. If you’re not able to fly to London Heathrow Airport in February, then October is your next best option. Flight prices from Las Vegas to London Heathrow Airport during October average around $759.

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $877. The most expensive day to fly to London Heathrow Airport is Friday, with ticket prices averaging around $1,000.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Las Vegas to London Heathrow Airport in the afternoon for as low as $860. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $941.

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

You are more likely to see cheaper flights to London Heathrow Airport from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $920 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Las Vegas for as low as $736 on momondo.

There are 3 cabin classes available to choose from on Las Vegas Harry Reid Intl to London Heathrow 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 10% on your flight if you consider stops on a Las Vegas to London Heathrow Airport flight.

As of March 2026, prices for Las Vegas to London Heathrow Airport flights are approximately 27% cheaper when compared to flights at the same time last year.

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

British Airways, Delta and Virgin Atlantic are the top three most popular airlines that fly to London Heathrow Airport from Las Vegas according to our data. British Airways is the first choice among our users, with 46% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 10 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

New York (JFK) was the most common stop: 43% of momondo users choosing 1-stop flights on this route connected there.

Flights via New York (JFK) offer the lowest average round-trip price of $1,007.

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 13h 15m.

Los Angeles (LAX) has the shortest average layover time for this route: 2h 25m.

As of March 2026, 7 flights take off from Las Vegas and land in London Heathrow Airport each day. The most common flight departure time for this route is 9:00PM, with 100% of daily flights taking off in the evening.

As of March 2026, 55 flights take off from Las Vegas and land in London Heathrow Airport each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.