Cheap flights from Las Vegas to London from $427

The cheapest month to fly to London from Las Vegas is in January. Flight prices, which tend to average around $674, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from Las Vegas averaging around $710.

The cheapest day to depart from Las Vegas to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $880. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $988. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Las Vegas in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $887 when looking at flights departing in the afternoon. Flights to London are more costly in the evening, with an average ticket price of $942. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $932 when searching weeks out. 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 $703 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 15% on your flight if you consider stops on a Las Vegas to London flight.

As of April 2026, prices for Las Vegas to London flights are approximately 27% more expensive when compared to flights at the same time last year.

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

British Airways, Delta and Virgin Atlantic are the top three most popular airlines that fly to London from Las Vegas according to our data. British Airways is the first choice among our users, with 47% of people opting to fly with this airline when traveling to London. Keep in mind that there are 9 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

New York (JFK) was the most common stop: 27% of momondo users choosing 1-stop flights on this route connected there.

Flights via Toronto (YYZ) offer the lowest average round-trip price of $809.

Flights connecting via Chicago (ORD) have the shortest average one-way travel time: 12h 34m.

Chicago (ORD) has the shortest average layover time for this route: 1h 29m.

As of April 2026, 11 flights take off from Las Vegas and land in London each day. The most common flight departure time for this route is 10:00PM, with 77% of daily flights taking off in the evening.

As of April 2026, 80 flights take off from Las Vegas and land in London each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.