$575 Cheap Flights from London (LHR) to Las Vegas (LAS)

View $575 flight on Wed, Sep 24, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from London to Las Vegas (LHR-LAS)

Prices were available within the past 7 days and start at $575 for one-way flights and $737 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Fri, May 9 - Thu, May 15
LHR
London
LAS
Las Vegas
$737 Roundtrip, found 6 days ago
$737
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Fri, May 9 from London to Las Vegas, returning Thu, May 15, priced at $737 found 6 days ago
Swiss International Air Lines
Thu, May 15 - Mon, May 19
LHR
London
LAS
Las Vegas
$744 Roundtrip, found 4 days ago
$744
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Thu, May 15 from London to Las Vegas, returning Mon, May 19, priced at $744 found 4 days ago
Lufthansa
Fri, May 16 - Fri, May 23
LHR
London
LAS
Las Vegas
$749 Roundtrip, just found
$749
Roundtrip
just found
Select Lufthansa flight, departing Fri, May 16 from London to Las Vegas, returning Fri, May 23, priced at $749 just found
British Airways
Tue, Aug 26 - Tue, Sep 30
LHR
London
LAS
Las Vegas
$779 Roundtrip, found 6 days ago
$779
Roundtrip
found 6 days ago
Select British Airways flight, departing Tue, Aug 26 from London to Las Vegas, returning Tue, Sep 30, priced at $779 found 6 days ago
Virgin Atlantic
Tue, Sep 9 - Tue, Sep 23
LHR
London
LAS
Las Vegas
$782 Roundtrip, found 5 days ago
$782
Roundtrip
found 5 days ago
Select Virgin Atlantic flight, departing Tue, Sep 9 from London to Las Vegas, returning Tue, Sep 23, priced at $782 found 5 days ago
Delta
Tue, Sep 9 - Tue, Sep 23
LHR
London
LAS
Las Vegas
$782 Roundtrip, found 5 days ago
$782
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Sep 9 from London to Las Vegas, returning Tue, Sep 23, priced at $782 found 5 days ago
British Airways
Tue, Aug 26 - Wed, Sep 17
LHR
London
LAS
Las Vegas
$786 Roundtrip, found 6 days ago
$786
Roundtrip
found 6 days ago
Select British Airways flight, departing Tue, Aug 26 from London to Las Vegas, returning Wed, Sep 17, priced at $786 found 6 days ago
Brussels Airlines
Sun, Sep 21 - Thu, Sep 25
LHR
London
LAS
Las Vegas
$788 Roundtrip, found 1 day ago
$788
Roundtrip
found 1 day ago
Select Brussels Airlines flight, departing Sun, Sep 21 from London to Las Vegas, returning Thu, Sep 25, priced at $788 found 1 day ago
Austrian Airlines
Sun, Sep 21 - Thu, Sep 25
LHR
London
LAS
Las Vegas
$788 Roundtrip, found 1 day ago
$788
Roundtrip
found 1 day ago
Select Austrian Airlines flight, departing Sun, Sep 21 from London to Las Vegas, returning Thu, Sep 25, priced at $788 found 1 day ago
Iberia
Tue, Aug 26 - Wed, Sep 17
LHR
London
LAS
Las Vegas
$793 Roundtrip, found 6 days ago
$793
Roundtrip
found 6 days ago
Select Iberia flight, departing Tue, Aug 26 from London to Las Vegas, returning Wed, Sep 17, priced at $793 found 6 days ago
Flights from London (LHR) to Las Vegas (LAS)
Origin airport
Heathrow
Destination airport
Harry Reid Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, JetBlue Airways, KLM, Lufthansa, Swiss International Air Lines, United, Virgin Atlantic, WestJet
Roundtrip price
$737
Distance
5216 mi

London to Las Vegas Flights

The cheapest times to fly from London to Las Vegas

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to Las Vegas are during the month of May. You can find some of the cheapest flights from London to Las Vegas with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to Las Vegas

Sunday is one of the best days to book for cheap flights from London to Las Vegas: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to Las Vegas

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to Las Vegas in 2025. You can also book with separate airlines for your outbound and return journeys, from $575 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to Las Vegas flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to Las Vegas airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How long does it take to fly from Heathrow Airport (LHR) to LAS?
Virgin Atlantic operates a direct flight leaving London Heathrow at 3:45PM and touching down at McCarran Airport at 6:30PM — a total flying time of 10 hours and 45 minutes. Secure the best available seat, bring something to keep you busy and the time will speed by.
Is it cheaper to buy a plane ticket from LHR to McCarran Airport last minute?
Booking your flight from Heathrow Airport to Harry Reid Airport (formerly McCarran Airport) last minute could save you money if you happen to find an awesome deal. However, tickets don’t typically get cheaper as the departure date nears. If you procrastinate, flights could also be sold out or the best seats gone (that could mean the middle seat!). If you’d rather not hedge your bets, book well ahead of the date you want to leave. Don’t forget that some of the biggest bargains can be found up to a year in advance. If your preferred airline hasn’t released its fares yet, check back regularly as offers are updated on Expedia constantly.
What airline has the least delays from Heathrow Airport to McCarran Airport?
With an on-time arrival rate of 35%, British Airways is the airline that’s likelier to get you from LHR to McCarran Intl. Airport (LAS) on schedule. Flight delays aren’t just an unpleasant experience — they can also lead to a missed connection or even ruin your entire vacation. Keep updated about any delays by looking up your flight status through the Expedia App well before you get to the airport. If you’re already at the terminal and the delay will significantly impact your plans, visit your airline’s customer service desk for more information.
What airports do you fly into for Las Vegas from London?
McCarran Intl. Airport (LAS), Henderson Executive Airport (HSH) and North Las Vegas Airport (VGT) are your choices when heading off from London to Las Vegas. Roughly 2 mi southeast of central Las Vegas, McCarran Intl. Airport (LAS) is the city’s principal entry point. Take into account factors such as flight departure and arrival times and the distance to your hotel before you select an airport. Thomas and Mack Center and Fashion Show Mall are a couple of awesome attractions to put on your to-do list when you reach your destination.
What are the most popular departure times for flights from Heathrow Airport (LHR) to Harry Reid Airport (formerly McCarran Airport)?
The most popular departure times for flights from Heathrow Airport to McCarran Intl. Airport (LAS) are between 3:00 PM - 4:00 PM on Virgin Atlantic. Our advice is to jet out in the morning. The earlier you go, the greater your chances of a delay-free flight as air traffic hasn’t yet built up around airports.
Can I change the date of my flight from LHR to Harry Reid Airport (formerly McCarran Airport)?
Quickly make changes to your London Heathrow to McCarran Airport flight via the Expedia Trips portal. But before you begin, look over the rules in your itinerary to find out what you’re allowed to do and if any charges apply. Some airlines have a change fee per person, on top of any difference in ticket prices. However, if you booked in the last 24 hours, you may be able to cancel for free and organize new flights. You can also stop by our Customer Service portal to find the answers to your questions and to connect with our Virtual Agent.

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*Available to One Key members.