$438 Cheap British Airways flights Las Vegas (LAS) to London (LHR)

Scoring cheap one-way British Airways flights from LAS to LHR from $438 on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $629 for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the cheapest months to get away to London with British Airways. You could also find great deals on return and one-way tickets in February.

Scoring the best British Airways deals from LAS to LHR often comes down to timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. What’s more, you can pocket 17% on average by buying your tickets on a Sunday rather than a Friday, which is usually the most expensive day to book.* It’s smart to kick off your flight search about one month before your departure date.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

British Airways operates direct flights from Harry Reid Intl. Airport (LAS) to Heathrow Airport (LHR), with 10 departures every week. Simply choose the “Nonstop” and “Airline” filters during your search on Expedia to see all direct British Airways flights to LHR.

From takeoff to arrival, a nonstop British Airways flight from Harry Reid Intl. Airport (LAS) to Heathrow Airport (LHR) takes approximately 10h.

British Airways has the most flights from Harry Reid Intl. Airport (LAS) to Heathrow Airport (LHR) on Saturday. With up to 2 daily departures, you’ll get the most flexibility and choice on this day.

The first flight from LAS to LHR with British Airways leaves at 6:20PM UTC-8. You’ll land at 12:25PM UTC+0. The last British Airways flight of the day leaves at 8:55PM UTC-8 and arrives at 2:55PM UTC+0. With around 20% fewer cancellations for morning and mid-morning flights, setting off early is often the wisest option.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

The majority of British Airways flights from Harry Reid Intl. Airport (LAS) to London land at Heathrow Airport (LHR). This is the airline’s main gateway to this destination. It’s worth exploring Expedia for flights to nearby airports such as Gatwick Airport (LGW), as fares may be cheaper.

For checked luggage, passengers can bring 1 checked-in bag weighing up to 50 lb with dimensions not exceeding 29 inches x 15 inches x 16 inches. You can also bring 2 cabin bags in the cabin when flying standard economy from LAS to LHR with British Airways. This carry-on should weigh less than 50 lb and be no larger than 19 inches x 9 inches x 17 inches. Going above these restrictions can mean additional fees, so read British Airways’s baggage allowance rules before you start packing.

Offering a 4-star airline rating and top-tier customer service, British Airways is a favorite for many passengers heading from LAS to LHR. Plus, if you’re a British Airways Executive Club and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which you can put toward future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely be seated on an Airbus A350-1000 or a Boeing 777-300ER when flying British Airways from Harry Reid Intl. Airport (LAS) to Heathrow Airport (LHR). However, keep in mind that a different aircraft could be assigned to your route due to operational factors.

Changes are typically free within 24 hours of booking, but your airline may charge you after that. For more information about modifying your reservation, check out your “Trips,” select your flight and click on “Manage Booking.” If you want the freedom to update your itinerary without extra charges, check the “No cancel fee” or “Changes included” filter when organizing your trip.