LAS to LHR flight delays
Las Vegas, NV (LAS) London (LHR)
1,133 flights · March 2025 – August 2026 · US Bureau of Transportation Statistics and UK Civil Aviation Authority
80.57%
Arrived on time
Within 15 minutes of schedule
0.53%
Cancelled
Share of scheduled flights
—
When late, late by
Average across delayed arrivals
12 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In March it ran 24.3 points more punctual than in May — 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.
This route does better than its own airport. Departures from LAS overall run 16.5 points less punctual than this particular one — so whatever congestion LAS has, this route is largely escaping it.
The two directions do not behave alike. LHR to LAS arrives on time 6.9 points less 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.
The 2 airlines here are separated by under 4 points — close enough to call a tie. Choose on price and departure time.
Which airline should you fly on this route?
Over March 2025 – August 2026, Virgin Atlantic arrived on time most often on LAS to LHR. British Airways was late most often. Flights ran closest to schedule in August and worst in May.
Every airline on LAS to LHR
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 | 637 | 78.86% | 0.47% | — | C |
| Virgin Atlantic | 487 | 82.85% | 0.62% | — | 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
LHR to LAS London back to Las Vegas 73.63% on time COther routes from Las Vegas
Common questions
Are flights from Las Vegas to London usually delayed?
80.57% of flights on the LAS to LHR route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airline is most on time from Las Vegas to London?
Virgin Atlantic, at 82.85% on time across 487 flights. The least punctual on the route was British Airways at 78.86%.
How often are LAS to LHR flights cancelled?
0.53% of scheduled flights did not operate — about 5 in every thousand. That is in the normal range.
What is the best month to fly Las Vegas to London?
March, when 90.6% of flights arrived on time. The worst was May at 66.3%.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on LAS to LHR 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 →