DL3991

For travellers

Departure · San Francisco (SFO)

Terminal T1 · Gate C11

Scheduled 01 Oct 20:59 · Departed 01 Oct 22:44 · +105 min

Board status: Departed

Airborne since 01 Oct 23:01 (ADS-B)

Board data from sfo, updated 542 min ago; times local to each airport.

Flight

Status

Completed

Arrival confirmed via

ADS-B (ground reading)

Departure

San Francisco International Airport (SFO) — San Francisco, United States

Scheduled departure

2026-10-02 03:59 UTC

Departed

2026-10-02 06:01 UTC

Arrival

Seattle Tacoma International Airport (SEA) — Seattle, United States

Codeshares

SK3470, VS1906

Distance flown

1131 km

Straight-line distance

1093 km

Approach distance

67 km

Aircraft

Registration

N260SY

Type

EMBRAER EMB175

Seats

76 total (12 Business, 64 Economy)

CO2 (EMEP est., total)

16.9 t (512 kg/pax Business, 167 kg/pax Economy)

Altitude & speed

Max altitude

36,025 ft

Max ground speed

469 kt

Tracked

1h 42m · 1,130 km

Altitude (ft, max 36,025)

Ground speed (kt, max 469)

Altitude (ft, max 36,025)

Ground speed (kt, max 469)

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

Skywest Airlines (SKW)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-10-02 06:01 UTC	SKW3991	SFO → SEA San Francisco → Seattle	N260SY	EMBRAER EMB175	Completed	1131 km
2026-10-02 03:20 UTC	SKW3991	SEA → SFO Seattle → San Francisco	N260SY	EMBRAER EMB175	Completed	1237 km
2026-10-01 04:08 UTC	SKW3991	SFO → SEA San Francisco → Seattle	N315SY	EMBRAER EMB175	Completed	1130 km
2026-10-01 01:08 UTC	SKW3991	SEA → SFO Seattle → San Francisco	N315SY	EMBRAER EMB175	Completed	1258 km
2026-09-30 04:41 UTC	SKW3991	SFO → SEA San Francisco → Seattle	N274SY	EMBRAER EMB175	Completed	1125 km
2026-09-30 01:49 UTC	SKW3991	SEA → SFO Seattle → San Francisco	N274SY	EMBRAER EMB175	Completed	1230 km