UAL8143

Flight

Status

Completed

Arrival confirmed via

ADS-B (ground reading)

Departure

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

Departed

2026-09-30 23:42 UTC

Arrival

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

Distance flown

1127 km

Straight-line distance

1093 km

Approach distance

72 km

Aircraft

Registration

N37252

Type

Boeing 737-800

Seats

166 total (102 Economy, 48 Economy Plus, 16 First)

Altitude & speed

Max altitude

38,025 ft

Max ground speed

457 kt

Tracked

2h 22m · 1,124 km

Altitude (ft, max 38,025)

Ground speed (kt, max 457)

Altitude (ft, max 38,025)

Ground speed (kt, max 457)

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

United Airlines (UAL)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-09-30 23:42 UTC	UAL8143	SFO → SEA San Francisco → Seattle	N37252	Boeing 737-800	Completed	1127 km
2026-09-28 19:15 UTC	UAL8143	ORD → SYR Chicago → Syracuse	N842UA	Airbus A319	Completed	1020 km
2026-09-26 00:58 UTC	UAL8143	DEN → CMH Denver → Columbus	N76514	Boeing 737-800	Completed	2018 km
2026-09-21 03:17 UTC	UAL8143	ORD → SFO Chicago → San Francisco	N74532	Airbus A321 Neo	Completed	3013 km
2026-09-19 07:03 UTC	UAL8143	SEA → IAD Seattle → Washington, DC	N53442	Boeing 737-900	Completed	3959 km
2026-09-18 03:02 UTC	UAL8143	DEN → DFW Denver → Dallas-Fort Worth	N87507	Boeing 737-800	Completed	1147 km
2026-09-14 15:49 UTC	UAL8143	EWR → SFO Newark → San Francisco	N17133	Boeing 757-200	Completed	4824 km
2026-09-11 18:20 UTC	UAL8143	EWR → SFO Newark → San Francisco	N13113	Boeing 757-200	Completed	4460 km
2026-09-02 01:02 UTC	UAL8143	CLE → EWR Cleveland → Newark	N68817	Boeing 737-900	Completed	901 km
2026-09-01 01:14 UTC	UAL8143	ORD → FLL Chicago → Fort Lauderdale	N75433	Boeing 737-900	Completed	2035 km
2026-08-29 03:08 UTC	UAL8143	DEN → AUS Denver → Austin	N17341	Boeing 737 MAX 8	Completed	1338 km
2026-08-28 02:44 UTC	UAL8143	DEN → AUS Denver → Austin	N47291	Boeing 737 MAX 8	Completed	1528 km
2026-08-21 00:37 UTC	UAL8143	DEN → CMH Denver → Columbus	N27260	Boeing 737 MAX 8	Completed	2369 km
2026-08-19 04:23 UTC	UAL8143	MLB → DEN Melbourne → Denver	N826UA	Airbus A319	Completed	4722 km
2026-08-15 17:10 UTC	UAL8143	SFO → ORD San Francisco → Chicago	N57862	Boeing 737-300	Completed	~6116 km est. (4311 km recorded)
2026-08-14 02:52 UTC	UAL8143	DEN → ONT Denver → Ontario	N38268	Boeing 737-800	Completed	1969 km
2026-08-13 22:41 UTC	UAL8143	YVR → DEN Vancouver → Denver	N38268	Boeing 737-800	Completed	2306 km
2026-08-13 18:47 UTC	UAL8143	SFO → YVR San Francisco → Vancouver	N38268	Boeing 737-800	Completed	1477 km
2026-08-13 14:40 UTC	UAL8143	YVR → SFO Vancouver → San Francisco	N38268	Boeing 737-800	Completed	1472 km
2026-08-13 05:19 UTC	UAL8143	DEN → YVR Denver → Vancouver	N38268	Boeing 737-800	Completed	~3702 km est. (1913 km recorded)