GLA to LGW flight delays
1,941 flights · January 2025 – August 2026 · UK Civil Aviation Authority
78.74%
Arrived on time
Within 15 minutes of schedule
0.41%
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 March it ran 20.2 points more punctual than in June — 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 route has been getting worse. The later months run 11.5 points less punctual than the earlier ones. A drift of that size is rarely weather; it is more often an airline adding frequencies faster than the airports can absorb them.
The 2 airlines here are separated by under 4 points — close enough to call a tie. Choose on price and departure time.
The Glasgow to London route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, British Airways arrived on time most often on GLA to LGW. easyJet was late most often. Flights ran closest to schedule in March and worst in June.
Every airline on GLA to LGW
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 |
|---|---|---|---|---|---|
| easyJet | 1,514 | 78.05% | 0.4% | — | C |
| British Airways | 423 | 81.24% | 0.47% | — | B |
| Aer Lingus | 4 | 75% | 0% | — | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
LGW to GLA London back to Glasgow 80.63% on time BCommon questions
Are flights from Glasgow to London usually delayed?
78.74% of flights on the GLA to LGW 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 Glasgow to London?
British Airways, at 81.24% on time across 423 flights. The least punctual on the route was easyJet at 78.05%.
How often are GLA to LGW flights cancelled?
0.41% of scheduled flights did not operate — about 4 in every thousand. That is in the normal range.
What is the best month to fly Glasgow to London?
March, when 89.6% of flights arrived on time. The worst was June at 69.4%.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on GLA to LGW during January 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 →