Heathrow's security lines can be lengthy; ensure all liquids are in one bag to avoid delays.

Most accurate provider | Mytrip 3 stars |
|---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $627 (oojo) |
One-way from | $449 (Trip.com) |
Popular in | August |
Cheapest in | February |
Average price | $825 |
Good round-trip deal | $885 or less |
Good one-way deal | $840 or less |
Fly from
Fly to
Route
Depart
Return
Price
LondonLas Vegas
LCY - LAS
LCYLAS
London City
Fri 1/9
8:40 am-2:15 pm
1 stop13h 35m
Las Vegas Harry Reid Intl
Mon 1/12
11:56 am-5:20 pm
2 stops21h 24m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Sun 3/1
4:05 pm-6:50 pm
Nonstop10h 45m
Las Vegas Harry Reid Intl
Mon 3/9
9:55 pm-2:50 pm
Nonstop9h 55m
LondonLas Vegas
LTN - LAS
LTNLAS
London Luton
Thu 1/22
9:00 am-5:50 pm
1 stop16h 50m
Las Vegas Harry Reid Intl
Thu 1/29
7:35 pm-4:00 pm
1 stop12h 25m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Sun 1/18
9:55 am-5:43 pm
1 stop15h 48m
Las Vegas Harry Reid Intl
Sun 2/1
6:35 pm-12:30 pm
Nonstop9h 55m
LondonLas Vegas
STN - LAS
STNLAS
London Stansted
Thu 1/8
6:30 am-5:50 pm
1 stop19h 20m
Las Vegas Harry Reid Intl
Thu 1/15
7:35 pm-6:20 pm
1 stop14h 45m
LondonLas Vegas
STN - LAS
STNLAS
London Stansted
Tue 2/3
6:30 am-5:50 pm
1 stop19h 20m
Las Vegas Harry Reid Intl
Tue 2/10
11:38 pm-7:50 am
2 stops24h 12m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Fri 1/16
2:45 pm-10:34 pm
1 stop15h 49m
Las Vegas Harry Reid Intl
Sat 1/31
7:35 pm-7:50 pm
1 stop16h 15m
LondonLas Vegas
LTN - LAS
LTNLAS
London Luton
Sat 12/6
6:00 am-5:50 pm
1 stop19h 50m
Las Vegas Harry Reid Intl
Tue 12/9
7:35 pm-8:05 pm
1 stop16h 30m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Fri 4/10
11:45 am-6:35 pm
1 stop14h 50m
Las Vegas Harry Reid Intl
Fri 5/1
2:40 pm-1:30 pm
1 stop14h 50m
LondonLas Vegas
LHR - LAS
LHRLAS
London Heathrow
Thu 4/16
4:35 pm-7:43 pm
2 stops35h 08m
Las Vegas Harry Reid Intl
Tue 4/21
11:45 am-9:05 am
1 stop13h 20m
| 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*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
The best time to book flights from London to Las Vegas is 23 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, March is the cheapest month in which you can book a flight from London to Las Vegas (average of $394). Flying from London to Las Vegas in June is currently the most expensive (average of $728). 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.
One of the essential ways to save on airfare from London to Las Vegas is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 22% on airfare.
The most flights from LON to LAS are scheduled on a Monday (9 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 on average).
Dallas (DFW) – chosen by Cheapflights users on 40% of 1-stop itineraries from London 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 Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 25m.
About 18% of weekly flights between London and Las Vegas have experienced delays in the past year, with the average delay time being 123 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, Delta have had the lowest number of delays on this route, with no flights being classified as delayed.
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Jim,Nov 2025
AVL - ATL
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Jim,Nov 2025
AVL - ATL
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Jim,Nov 2025
AVL - ATL
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Jim,Nov 2025
AVL - ATL
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Jim,Nov 2025
AVL - ATL
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$685 | Average$1,020 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$693 | Average$942 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$740 | Average$983 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$763 | Average$1,136 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$787 | Average$1,072 | FlexibilityNo cancel fee | On-time71% |