SQ31Singapore Airlines · SFO → SIN
live · 2m ago
Route confirmed Singapore Airlines

SQ31 San FranciscoSFO · 09:40 SingaporeSIN · 19:05

SQ31 by Singapore Airlines flies from San Francisco (SFO) to Singapore (SIN) for the Mon, Nov 9 departure.

Right nowLast call · gate G9 · as of 09:36
09:40

departs SFO · on schedule

Aircraft is still on the ground at SFO · 18 min after scheduled departure

Typical arrival−53 minmedian over 3 operations
Wins back in air~84 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
11-09
−53 arrival
11-08
+42 gate · −19 arrival
11-07
+20 gate · −53 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
SFOSan FranciscoOn-time likelySFO delay board →
SINSingaporeOn-time likelySIN delay board →
SFO→SINevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
47%Chance of 15+ min delay
1.9%Chance of cancellation
+19 minTypical airport delay in this weather

Driven mainly by SFO (San Francisco), currently flying LIFR (low instrument). These figures come from both airports' records 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 at San Francisco

Forecast

Tue 10 Nov, local date

High22°Clikely 20°C to 24°C
Low13°Clikely 12°C to 15°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Singapore

Forecast

Wed 11 Nov, local date

High31°Clikely 29°C to 32°C
Low25°Clikely 24°C to 26°C
  • 57% chance of thunder
  • 95% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other San Francisco to Singapore flights today

same route · Singapore Airlines
SQ33departs 20:15
SQ9031departs 22:35

If SQ31 is cancelled, these are the other Singapore Airlines nonstop flights from San Francisco to Singapore on the same day, with scheduled departure times in SFO local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How SQ31 actually runs

Pro Flight Search has tracked every published board update for SQ31 across the SFO and SIN boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 3 completed legs so far: left noticeably late (~31 min) but landed about 53 min early. Not enough to call it.

The verdict above is that record speaking, so it reflects how SQ31 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
11-09SFO 09:40SIN 19:05 18:12 (−53)
11-08SFO 09:40 10:22 (+42)SIN 19:05 18:46 (−19)
11-07SFO 09:40 10:00 (+20)SIN 19:05 18:12 (−53)

Board clocks recorded as SFO and SIN published them.

Planning around SQ31? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: SQ31 San Francisco to Singapore on-time performance, measured from the SFO and SIN airport boards.

Canonical URL
https://proflightsearch.com/flight/SQ31
How we measure this →