SQ421 MumbaiBOM · 11:50 SingaporeSIN · 19:50
SQ421 by Singapore Airlines flies from Mumbai (BOM) to Singapore (SIN) for the Tue, Oct 27 departure.
departs BOM · on schedule
board checked 30m ago · checking again in 45s
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 +68 min · 0 cancelled · 5 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at BOM and SIN are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Mumbai to Singapore flights today
same route · Singapore AirlinesIf SQ421 is cancelled, this is the other Singapore Airlines nonstop flight from Mumbai to Singapore on the same day, with scheduled departure times in BOM local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How SQ421 actually runs
Pro Flight Search has tracked every published board update for SQ421 across the BOM and SIN boards: schedule changes, gate pushes and actual clocks. Usually lands ~68 min late. Based on 5 confirmed landings · 2/5 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 SQ421 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 BOM and SIN published them.
Planning around SQ421? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — SQ421 Mumbai to Singapore on-time performance, measured from the BOM and SIN airport boards.
https://proflightsearch.com/flight/SQ421
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