LHR to LAS flight delays
London (LHR) Las Vegas, NV (LAS)
1,134 flights · March 2025 – August 2026 · UK Civil Aviation Authority and US Bureau of Transportation Statistics
73.63%
Arrived on time
Within 15 minutes of schedule
0.35%
Cancelled
Share of scheduled flights
—
When late, late by
Average across delayed arrivals
15 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. Virgin Atlantic arrived on time 17.1 points more often than British Airways over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
The season swings this route hard. In June it ran 36.4 points more punctual than in July — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The two directions do not behave alike. LAS to LHR arrives on time 6.9 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Flights from London to Las Vegas run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over March 2025 – August 2026, Virgin Atlantic arrived on time most often on LHR to LAS. British Airways was late most often. Flights ran closest to schedule in February and worst in July.
Every airline on LHR to LAS
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| British Airways | 638 | 66.19% | 0.31% | — | D |
| Virgin Atlantic | 487 | 83.3% | 0.41% | — | B |
| American Airlines | 9 | 77.78% | 0% | — | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
LAS to LHR Las Vegas back to London 80.57% on time BOther routes from London
Common questions
Are flights from London to Las Vegas usually delayed?
73.63% of flights on the LHR to LAS route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airline is most on time from London to Las Vegas?
Virgin Atlantic, at 83.3% on time across 487 flights. The least punctual on the route was British Airways at 66.19%.
How often are LHR to LAS flights cancelled?
0.35% of scheduled flights did not operate — about 4 in every thousand. That is in the normal range.
What is the best month to fly London to Las Vegas?
June, when 89.6% of flights arrived on time. The worst was July at 53.2%.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on LHR to LAS during March 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →