SQ421 MumbaiBOM · 11:45 SingaporeSIN · 19:50
SQ421 by Singapore Airlines flies from Mumbai (BOM) to Singapore (SIN) for the Tue, Sep 22 departure.
estimated arrival at SIN · local time · ~94 min from now
board checked 22m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 12:08. No receiver coverage over open ocean.
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 −18 min · 0 cancelled · 5 operations tracked
The route today
live boardsWhen 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 ~5 min early. Based on 4 confirmed landings · 3/4 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 SQ421 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: 9V-SCS, 9V-SCD.
Board 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
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
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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