Cheap flights from Las Vegas to London from £270

In general, February is the cheapest month to fly from Las Vegas to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £500. The month of October is another great option to travel to London Heathrow Airport, with average flight prices from Las Vegas averaging around £564.

On average, the least expensive day to fly to London Heathrow Airport from Las Vegas is on a Sunday. momondo users have found tickets for Sunday departures for as low as £494. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £704.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Las Vegas to London Heathrow Airport in the evening for as low as £595. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £641 on average. Flights to London Heathrow Airport from Las Vegas in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 £686 when searching weeks before you fly. 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 £548 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.

The number of flights available between Las Vegas and London Heathrow Airport is 7 per day as of March 2026. The most frequent departure time is 20:00, with 100% of daily flights leaving in the evening.

The number of flights available between Las Vegas and London Heathrow Airport is 55 per week as of March 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.