$413 Cheap United flights from Las Vegas to London (LAS to LHR)

Find The Best Day To Fly from Las Vegas to London

Amazing United LAS to LHR Flight Deals

The cheapest flights to Heathrow found within the past 7 days were $673 round trip and $413 one way. Prices and availability subject to change. Additional terms may apply.

LHR From LAS Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Three Falcons Hotel
Hotel Riu Plaza London Victoria
The Langham, London
Don't see what you're looking for?
See all available trips from Harry Reid Intl. to Heathrow
View all trips

Frequently asked questions

Can I catch a flight from Harry Reid Airport (formerly McCarran Airport) to Heathrow Airport right now?
Make sure you go to our Covid-19 Travel Advisor to discover if there are any present travel advice reports and quarantine requirements in effect in London Heathrow when flying from LAS.
What terminal is United Airlines at Harry Reid Airport (formerly McCarran Airport)?
Once you’ve been given the boarding pass for your flight from Harry Reid Airport (formerly McCarran Airport) to Heathrow Airport, you should be able to see exactly which terminals United Airlines flies in and out of. If not, consult your airline or do some online research for that information.
Are there United Airlines non-stop flights from LAS to LHR?
If you want to travel with United Airlines from Harry Reid Airport (formerly McCarran Airport) to LHR, you’ll need to make at least one stop. While waiting for your connection, take the opportunity to grab a refreshment or check out the airport shops.
How long is a United Airlines flight from LAS to LHR?
Your United Airlines flight from Harry Reid Airport (formerly McCarran Airport) to Heathrow Airport (LHR) will take an average of 12 hours and 16 minutes, so it’s wise to pack a change of clothes and some toiletries for the journey. If you want to keep boredom to a minimum, toss a few crossword puzzles and books in your hand luggage too.
How many direct and indirect flights does United Airlines fly from LAS to LHR?
When journeying from LAS to LHR, you’ll find approximately 6 United Airlines daily flights to choose from.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to London Heathrow, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from Las Vegas LAS to London LHR 

To find the best deals on flights to Las Vegas from London with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Las Vegas LAS to London LHR with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $673 to $673, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from Las Vegas LAS to London LHR 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Las Vegas to London costs from $413. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to London LHR from  Las Vegas LAS with United 

To find a cheap United flight from Las Vegas LAS to London LHR, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from Las Vegas LAS to London LHR 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as September, or if you book a flight with a stopover. 

 

Find nonstop flights from Las Vegas LAS to London LHR with United 

If you’re keen to be on London soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from Las Vegas LAS to London LHR 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to London LHR from  Las Vegas LAS with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

Travelers ❤️ these 🏨 after their flight to London

Hilton Garden Inn London Heathrow Terminal 2 and 3
Hilton Garden Inn London Heathrow Terminal 2 and 3
3.5 out of 5
Heathrow T2, Hounslow, England
This hotel features a restaurant, a gym, and a bar/lounge. WiFi in public areas is free. A 24-hour business center, a snack bar/deli, and express check-out are ...
8.8/10 Excellent! (4,659 reviews)
"Convenient"

Reviewed on May 15, 2025

Hilton Garden Inn London Heathrow Terminal 2 and 3
Leonardo London Heathrow Airport
Leonardo London Heathrow Airport
4 out of 5
Bath Road, West Drayton, England
This hotel features a restaurant, a gym, and a bar/lounge. Traveling on business? Take advantage of the business center, free WiFi in public areas, and airport ...
8.6/10 Excellent! (5,538 reviews)
"Excellent stay over in between flights"

Reviewed on May 16, 2025

Leonardo London Heathrow Airport
Holiday Inn Express London Heathrow T4 by IHG
Holiday Inn Express London Heathrow T4 by IHG
3.5 out of 5
Terminal 4, 1 Swindon Road, London Heather, Hounslow, England
This smoke-free hotel features 2 restaurants and 2 bars/lounges. Traveling on business? Take advantage of the business center, free WiFi in public areas, and ...
8.8/10 Excellent! (4,133 reviews)
"We loved that we could walk to our hotel directly and safely from terminal 4 through a walkway above the roads and traffic!"

Reviewed on May 15, 2025

Holiday Inn Express London Heathrow T4 by IHG
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.