At Heathrow, allow extra time for strict security checks. Ensure all liquids are in one small bag to avoid delays.

Most accurate provider | Mytrip 3 stars |
|---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $625 (Trip.com) |
One-way from | $470 (Kiwi.com) |
Popular in | August |
Cheapest in | January |
Average price | $920 |
Good round-trip deal | $856 or less |
Good one-way deal | $773 or less |
Fly from
Fly to
Route
Depart
Return
Price
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Tue 2/3
4:05 pm-6:50 pm
Nonstop10h 45m
Las Vegas Harry Reid Intl
Tue 2/24
8:55 pm-2:50 pm
Nonstop9h 55m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Tue 4/7
4:10 pm-10:51 pm
1 stop14h 41m
Las Vegas Harry Reid Intl
Tue 4/14
1:33 pm-10:50 am
1 stop13h 17m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Thu 12/25
10:10 am-10:10 pm
2 stops20h 00m
Las Vegas Harry Reid Intl
Mon 12/29
6:21 am-7:05 am
1 stop16h 44m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Sat 3/14
8:40 am-3:15 pm
1 stop13h 35m
Las Vegas Harry Reid Intl
Wed 3/18
9:45 pm-2:40 pm
Nonstop9h 55m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Sun 12/28
10:45 am-11:59 pm
1 stop21h 14m
Las Vegas Harry Reid Intl
Tue 1/13
8:45 pm-2:40 pm
Nonstop9h 55m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Fri 12/26
11:05 am-11:59 pm
2 stops20h 54m
Las Vegas Harry Reid Intl
Thu 1/1
6:21 am-7:05 am
1 stop16h 44m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Mon 2/9
9:00 am-8:52 pm
2 stops19h 52m
Las Vegas Harry Reid Intl
Wed 2/25
3:55 pm-5:50 pm
2 stops17h 55m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Sat 12/20
11:05 am-8:07 pm
1 stop17h 02m
Las Vegas Harry Reid Intl
Mon 1/5
8:45 pm-2:40 pm
Nonstop9h 55m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Thu 5/7
11:45 am-6:35 pm
1 stop14h 50m
Las Vegas Harry Reid Intl
Sun 5/10
11:30 am-10:15 am
1 stop14h 45m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Fri 12/26
1:00 pm-10:24 pm
1 stop17h 24m
Las Vegas Harry Reid Intl
Mon 12/29
7:15 am-9:00 am
2 stops17h 45m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star |
The best time to book flights from London Heathrow Airport to Las Vegas is 67 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, December is the cheapest month in which you can book a flight from London Heathrow Airport to Las Vegas (average of $619). Flying from London Heathrow Airport to Las Vegas in July is currently the most expensive (average of $743). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Unlike at noon, when flights are generally more expensive, you can save up to 22% on flights from London Heathrow Airport to Las Vegas by exploring options for tickets in the afternoon.
About 17% of weekly flights between London and Las Vegas have experienced delays in the past year, with the average delay time being 124 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Over the last year, American Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.
Dublin (DUB) – chosen by Cheapflights users on 50% of 1-stop itineraries from London Heathrow Airport to Las Vegas on Cheapflights.
San Francisco (SFO) is the most affordable 1-stop option, with an average round-trip price of $740.
Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 13h 40m.
Flights via San Francisco (SFO) offer the fastest connection on this route, with an average layover time of 1h 34m.
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$627 | Average$886 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$651 | Average$979 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$685 | Average$1,026 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$763 | Average$1,136 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$787 | Average$1,072 | FlexibilityNo cancel fee | On-time71% |