SIN to LGW flight delays
200 flights · January 2025 – August 2026 · UK Civil Aviation Authority
49%
Arrived on time
Within 15 minutes of schedule
0%
Cancelled
Share of scheduled flights
—
When late, late by
Average across delayed arrivals
20 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In February it ran 76.7 points more punctual than in April — 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.
Flights from Singapore to London arrive late more often than they arrive on time. At this rate lateness is the normal outcome, not the exception, and the schedule is better read as an aspiration than a plan.
The two directions do not behave alike. LGW to SIN arrives on time 37.8 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 route has been getting worse. The later months run 25.6 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.
Which airline should you fly on this route?
Over January 2025 – August 2026, Singapore Airlines arrived on time most often on SIN to LGW. Flights ran closest to schedule in February and worst in April.
Every airline on SIN 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 |
|---|---|---|---|---|---|
| Singapore Airlines | 198 | 48.99% | 0% | — | F |
| British Airways | 2 | 50% | 0% | — | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
LGW to SIN London back to Singapore 86.8% on time AOther routes from Singapore
Common questions
Are flights from Singapore to London usually delayed?
49% of flights on the SIN to LGW route arrived within 15 minutes of schedule, so roughly 5 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Singapore to London?
Only Singapore Airlines appears in the published record on this route, with 198 flights and 48.99% arriving on time.
How often are SIN to LGW flights cancelled?
0% of scheduled flights did not operate — about 1 in every thousand. That is in the normal range.
What is the best month to fly Singapore to London?
February, when 80% of flights arrived on time. The worst was April at 3.3%.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on SIN 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 →