UAL1577

For travellers

Departure · Chicago (ORD)

Terminal 1 · Gate C21

Scheduled 19 Sep 14:35 · Departed 19 Sep 15:39 · +64 min

Board status: Active

Airborne since 19 Sep 15:56 (ADS-B)

Board data from ord, updated 18873 min ago; times local to each airport.

Flight

Status

Completed

Arrival confirmed via

ADS-B (ground reading)

Departure

Chicago O'Hare International Airport (ORD) — Chicago, United States

Scheduled departure

2026-09-19 19:35 UTC

Departed

2026-09-19 20:56 UTC

Arrival

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

Also flies as

UA1577

Codeshares

AC5081, LH9178, NZ9326, VA8095

Distance flown

3234 km

Straight-line distance

2964 km

Approach distance

76 km

Aircraft

Registration

N75853

Type

Boeing 737-300

Seats

213 total (24 Business, 189 Economy)

CO2 (EMEP est., total)

106.9 t (938 kg/pax Business, 447 kg/pax Economy)

Altitude & speed

Max altitude

32,000 ft

Max ground speed

488 kt

Tracked

4h 13m · 3,097 km

Altitude (ft, max 32,000)

Ground speed (kt, max 488)

Altitude (ft, max 32,000)

Ground speed (kt, max 488)

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
2026-10-03 02:58 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N27290	Boeing 737 MAX 8	Completed	897 km
2026-10-02 19:42 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N57868	Boeing 737-300	Completed	3024 km
2026-10-02 15:12 UTC	UAL1577	TYS → ORD Knoxville → Chicago	N489UA	Airbus A320 233	Completed	913 km
2026-10-02 02:12 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N47332	Boeing 737 MAX 8	Completed	841 km
2026-10-01 20:03 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N77871	Boeing 737-300	Completed	3005 km
2026-10-01 14:56 UTC	UAL1577	TYS → ORD Knoxville → Chicago	N899UA	Airbus A319	Completed	853 km
2026-10-01 14:11 UTC	UAL1577	LAX → ORD Los Angeles → Chicago	N77871	Boeing 737-300	Completed	3094 km
2026-10-01 01:58 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N47293	Boeing 737 MAX 8	Completed	831 km
2026-09-30 20:03 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N57869	Boeing 737-300	Completed	3235 km
2026-09-30 14:50 UTC	UAL1577	TYS → ORD Knoxville → Chicago	N820UA	Airbus A319	Completed	833 km
2026-09-30 02:00 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N17310	Boeing 737 MAX 8	Completed	835 km
2026-09-29 20:03 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N75858	Boeing 737-300	Completed	3279 km
2026-09-29 14:55 UTC	UAL1577	TYS → ORD Knoxville → Chicago	N877UA	Airbus A319	Completed	845 km
2026-09-29 00:22 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N78866	Boeing 737-300	Completed	3023 km
2026-09-28 15:11 UTC	UAL1577	TYS → ORD Knoxville → Chicago	N892UA	Airbus A319	Completed	827 km
2026-09-27 21:53 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N57870	Boeing 737-300	Completed	3382 km
2026-09-27 16:52 UTC	UAL1577	TYS → ORD Knoxville → Chicago	N494UA	Airbus A320 233	Completed	831 km
2026-09-26 22:42 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N75861	Boeing 737-300	Completed	3021 km
2026-09-26 14:41 UTC	UAL1577	TYS → ORD Knoxville → Chicago	N818UA	Airbus A319	Completed	868 km
2026-09-26 02:33 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N27334	Boeing 737 MAX 8	Completed	838 km
2026-09-25 19:52 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N56859	Boeing 737-300	Completed	3045 km
2026-09-25 03:11 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N37307	Boeing 737 MAX 8	Completed	819 km
2026-09-24 19:47 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N57863	Boeing 737-300	Completed	3038 km
2026-09-24 14:52 UTC	UAL1577	TYS → ORD Knoxville → Chicago	N820UA	Airbus A319	Completed	860 km
2026-09-23 20:15 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N77867	Boeing 737-300	Completed	3021 km
2026-09-23 02:22 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N27292	Boeing 737 MAX 8	Completed	865 km
2026-09-22 20:15 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N57862	Boeing 737-300	Completed	3037 km
2026-09-21 21:41 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N57857	Boeing 737-300	Completed	3026 km
2026-09-21 01:59 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N37351	Boeing 737 MAX 8	Completed	834 km
2026-09-20 20:12 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N75858	Boeing 737-300	Completed	3036 km
2026-09-20 01:45 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N17254	Boeing 737 MAX 8	Completed	859 km
2026-09-19 20:56 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N75853	Boeing 737-300	Completed	3234 km
2026-09-19 02:00 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N17335	Boeing 737 MAX 8	Completed	887 km
2026-09-18 20:02 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N78866	Boeing 737-300	Completed	3194 km
2026-09-18 02:27 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N27273	Boeing 737 MAX 8	Completed	875 km
2026-09-17 21:02 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N57863	Boeing 737-300	Completed	3218 km
2026-09-17 02:04 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N37352	Boeing 737 MAX 8	Completed	876 km
2026-09-16 20:12 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N56859	Boeing 737-300	Completed	3375 km
2026-09-15 21:42 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N73860	Boeing 737-300	Completed	3267 km
2026-09-15 01:54 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N47293	Boeing 737 MAX 8	Completed	874 km
2026-09-14 20:08 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N27908	Boeing 787-8	Completed	3380 km
2026-09-14 01:48 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N17300	Boeing 737 MAX 8	Completed	869 km
2026-09-13 20:06 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N57862	Boeing 737-300	Completed	3488 km
2026-09-13 01:50 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N27274	Boeing 737 MAX 8	Completed	859 km
2026-09-12 19:58 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N75854	Boeing 737-300	Completed	3125 km
2026-09-12 01:49 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N17347	Boeing 737 MAX 8	Completed	861 km
2026-09-11 19:43 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N57862	Boeing 737-300	Completed	3249 km
2026-09-11 02:00 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N17337	Boeing 737 MAX 8	Completed	881 km
2026-09-10 19:51 UTC	UAL1577	ORD → SFO Chicago → San Francisco	N77867	Boeing 737-300	Completed	3211 km
2026-09-10 01:54 UTC	UAL1577	SFO → SAN San Francisco → San Diego	N27253	Boeing 737 MAX 8	Completed	869 km