SQ321 LondonLHR · 21:45 SingaporeSIN · 19:00
SQ321 by Singapore Airlines flies from London (LHR) to Singapore (SIN).
estimated arrival at SIN · local time · ~10h 01m from now
position updated 10m ago · checking again in 90s
Live position · flown path, last 3h 4m
Where the minutes go
last 5 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival −4 min · 0 cancelled · 5 operations tracked
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by SIN (Singapore), currently flying IFR (instrument). For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
Tomorrow on this route
ForecastLondon to Singapore with Singapore Airlines · Fri 30 Oct, local date
- Chance a departure is cancelled
- 0.4%0.6× usual
- Chance a departure leaves 60+ min late
- 5.6%1.2× usual
Forecast weather: 68% chance of thunder and 87% chance of rain at Singapore
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 4 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other London to Singapore flights today
same route · Singapore AirlinesIf SQ321 is cancelled, these are the other Singapore Airlines nonstop flights from London to Singapore on the same day, with scheduled departure times in LHR local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How SQ321 actually runs
Pro Flight Search has tracked every published board update for SQ321 across the LHR and SIN boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 4 confirmed landings · 4/4 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how SQ321 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as LHR and SIN published them.
Planning around SQ321? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — SQ321 London to Singapore on-time performance, measured from the LHR and SIN airport boards.
https://proflightsearch.com/flight/SQ321
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