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UAL1577

ORD → SFO · Boeing 737-300 · United Airlines

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For travellers

Departure · Chicago (ORD)

Terminal 1 · Gate C9
Scheduled 14:32 · Departed 14:34
Board status: Active
Airborne since 14:51 (ADS-B)

Arrival · San Francisco (SFO)

Terminal T3 · Gate F22 · Baggage belt CL-E9
Scheduled 17:20 · Estimated 17:02 · early
Board status: On time
In the air, ~1h 27m to go (62% of the route flown)

Board data from ord, sfo, updated 18 min ago; times local to each airport.

Flight

Status
In progress
Departure
Chicago O'Hare International Airport (ORD) — Chicago, United States
Scheduled departure
2026-10-03 19:32 UTC
Departed
2026-10-03 19:51 UTC
Arrival
San Francisco International Airport (SFO) — San Francisco, United States (scheduled)
Scheduled arrival
2026-10-04 00:20 UTC
Estimated arrival
2026-10-04 00:02 UTC
Progress
62% · ~1h 27m remaining
Also flies as
UA1577
Codeshares
AC5081, LH9178, NZ9326, VA8095
Distance flown
1846 km
Straight-line distance
2964 km

Aircraft

Registration
N57862
Type
Boeing 737-300
Seats
213 total (24 Business, 189 Economy)

Altitude & speed

Max altitude
34,025 ft
Max ground speed
438 kt
Tracked
2h 28m · 1,846 km
Note
still in progress - the track so far
Altitude (ft, max 34,025)
018,37436,7470m30m1h 0m1h 30m2h 0m
Ground speed (kt, max 438)
02374730m30m1h 0m1h 30m2h 0m
Altitude (ft, max 34,025)
018,37436,7470m1h 0m2h 0m
Ground speed (kt, max 438)
02374730m1h 0m2h 0m

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

DepartedFlightRouteRegAircraftStatusDistance
2026-10-03 19:51 UTC UAL1577 ORD → SFO
Chicago → San Francisco
 N57862 Boeing 737-300 In progress ~2964 km est.
2026-10-03 15:10 UTC UAL1577 TYS → ORD
Knoxville → Chicago
 N437UA Airbus A320 233 Completed 885 km
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

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