LHR to VIE flight delays
3,935 flights · March 2025 – August 2026 · UK Civil Aviation Authority
78.04%
Arrived on time
Within 15 minutes of schedule
0.81%
Cancelled
Share of scheduled flights
—
When late, late by
Average across delayed arrivals
11 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In April it ran 21 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. VIE to LHR arrives on time 5.1 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.
The 2 airlines here are separated by under 6 points — close enough to call a tie. Choose on price and departure time.
The London to Vienna route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over March 2025 – August 2026, British Airways arrived on time most often on LHR to VIE. Austrian Airlines was late most often. Flights ran closest to schedule in April and worst in July.
Every airline on LHR to VIE
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 |
|---|---|---|---|---|---|
| Austrian Airlines | 2,159 | 75.64% | 0.74% | — | C |
| British Airways | 1,776 | 80.97% | 0.9% | — | B |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
VIE to LHR Vienna back to London 83.14% on time BOther routes from London
Common questions
Are flights from London to Vienna usually delayed?
78.04% of flights on the LHR to VIE route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from London to Vienna?
British Airways, at 80.97% on time across 1,776 flights. The least punctual on the route was Austrian Airlines at 75.64%.
How often are LHR to VIE flights cancelled?
0.81% of scheduled flights did not operate — about 8 in every thousand. That is in the normal range.
What is the best month to fly London to Vienna?
April, when 89% of flights arrived on time. The worst was July at 68%.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on LHR to VIE 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 →