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UAL577

STL → EWR · Boeing 737-700 · United Airlines

Flight

Status
Completed
Arrival confirmed via
ADS-B (ground reading)
Departure
St Louis Lambert International Airport (STL) — St Louis, United States
Est. departure time
2026-09-12 11:49 UTC (approx.)
Arrival
Newark Liberty International Airport (EWR) — Newark, United States
Distance flown
1622 km
Straight-line distance
1400 km
Approach distance
120 km

Aircraft

Registration
N21723
Type
Boeing 737-700
Seats
126 total (78 Economy, 36 Economy Plus, 12 Business)

Altitude & speed

Max altitude
37,000 ft
Max ground speed
507 kt
Tracked
2h 6m · 1,539 km
Altitude (ft, max 37,000)
019,98039,9600m30m1h 0m1h 30m2h 0m
Ground speed (kt, max 507)
02745480m30m1h 0m1h 30m2h 0m
Altitude (ft, max 37,000)
019,98039,9600m1h 0m2h 0m
Ground speed (kt, max 507)
02745480m1h 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
2026-10-02 12:40 UTC UAL577 STL → EWR
St Louis → Newark
 N834UA Airbus A319 Completed 1532 km
2026-10-01 18:15 UTC UAL577 EWR → BOS
Newark → Boston
 N17317 Boeing 737 MAX 8 Completed 464 km
2026-10-01 12:33 UTC UAL577 STL → EWR
St Louis → Newark
 N846UA Airbus A319 Completed 1493 km
2026-09-30 17:31 UTC UAL577 EWR → BOS
Newark → Boston
 N47282 Boeing 737 MAX 8 Completed 464 km
2026-09-30 12:32 UTC UAL577 STL → EWR
St Louis → Newark
 N828UA Airbus A319 Completed 1507 km
2026-09-29 17:28 UTC UAL577 EWR → BOS
Newark → Boston
 N27256 Boeing 737 MAX 8 Completed 415 km
2026-09-29 12:47 UTC UAL577 STL → EWR
St Louis → Newark
 N853UA Airbus A319 Completed 1489 km
2026-09-28 12:35 UTC UAL577 STL → EWR
St Louis → Newark
 N899UA Airbus A319 Completed 1487 km
2026-09-27 20:24 UTC UAL577 EWR → BOS
Newark → Boston
 N17594 Boeing 737-900 Completed 437 km
2026-09-27 12:35 UTC UAL577 STL → EWR
St Louis → Newark
 N898UA Airbus A319 Completed 1522 km
2026-09-26 12:33 UTC UAL577 STL → EWR
St Louis → Newark
 N451UA Airbus A320 233 Completed 1492 km
2026-09-25 17:16 UTC UAL577 EWR → BOS
Newark → Boston
 N77259 Boeing 737 MAX 8 Completed 374 km
2026-09-25 12:38 UTC UAL577 STL → EWR
St Louis → Newark
 N883UA Airbus A319 Completed 1483 km
2026-09-24 18:36 UTC UAL577 EWR → BOS
Newark → Boston
 N27277 Boeing 737 MAX 8 Completed 358 km
2026-09-24 12:44 UTC UAL577 STL → EWR
St Louis → Newark
 N17529 Boeing 737 MAX 9 Completed 1488 km
2026-09-23 17:09 UTC UAL577 EWR → BOS
Newark → Boston
 N87442 Boeing 737 MAX 9 Completed 464 km
2026-09-23 12:10 UTC UAL577 STL → EWR
St Louis → Newark
 N16709 Boeing 737-700 Completed 1516 km
2026-09-22 18:55 UTC UAL577 EWR → BOS
Newark → Boston
 N37440 Boeing 737 MAX 9 Completed 372 km
2026-09-21 12:07 UTC UAL577 STL → ABE
St Louis → Allentown
 N13716 Boeing 737-700 Completed 1662 km
2026-09-20 19:27 UTC UAL577 EWR → BOS
Newark → Boston
 N17296 Boeing 737 MAX 8 Completed 477 km
2026-09-20 15:52 UTC UAL577 STL → EWR
St Louis → Newark
 N17730 Boeing 737-700 Completed 1565 km
2026-09-19 16:53 UTC UAL577 EWR → BOS
Newark → Boston
 N15710 Boeing 737-700 Completed 397 km
2026-09-19 12:26 UTC UAL577 STL → EWR
St Louis → Newark
 N27734 Boeing 737-700 Completed 1543 km
2026-09-18 17:07 UTC UAL577 EWR → BOS
Newark → Boston
 N37541 Boeing 737 MAX 9 Completed 391 km
2026-09-18 12:06 UTC UAL577 STL → EWR
St Louis → Newark
 N54711 Boeing 737-700 Completed 1582 km
2026-09-17 17:18 UTC UAL577 EWR → BOS
Newark → Boston
 N17411 Boeing 737 MAX 9 Completed 437 km
2026-09-17 12:58 UTC UAL577 STL → EWR
St Louis → Newark
 N23707 Boeing 737-700 Completed 1753 km
2026-09-16 17:00 UTC UAL577 EWR → BOS
Newark → Boston
 N67501 Boeing 737 MAX 9 Completed 502 km
2026-09-16 12:14 UTC UAL577 STL → EWR
St Louis → Newark
 N39728 Boeing 737-700 Completed 1592 km
2026-09-15 17:17 UTC UAL577 EWR → BOS
Newark → Boston
 N17401 Boeing 737 MAX 9 Completed 414 km
2026-09-15 13:25 UTC UAL577 STL → EWR
St Louis → Newark
 N24729 Boeing 737-700 Completed 1569 km
2026-09-14 17:03 UTC UAL577 EWR → BOS
Newark → Boston
 N17431 Boeing 737 MAX 9 Completed 398 km
2026-09-14 12:09 UTC UAL577 STL → EWR
St Louis → Newark
 N16709 Boeing 737-700 Completed 1537 km
2026-09-13 18:13 UTC UAL577 EWR → BOS
Newark → Boston
 N14735 Boeing 737-700 Completed 489 km
2026-09-13 12:07 UTC UAL577 STL → EWR
St Louis → Newark
 N13750 Boeing 737-700 Completed 1649 km
2026-09-12 17:43 UTC UAL577 EWR → BOS
Newark → Boston
 N13720 Boeing 737-700 Completed 435 km
2026-09-12 12:09 UTC UAL577 STL → EWR
St Louis → Newark
 N21723 Boeing 737-700 Completed 1622 km
2026-09-11 17:14 UTC UAL577 EWR → BOS
Newark → Boston
 N37541 Boeing 737 MAX 9 Completed 506 km
2026-09-11 12:13 UTC UAL577 STL → EWR
St Louis → Newark
 N13720 Boeing 737-700 Completed 1605 km
2026-09-10 17:28 UTC UAL577 EWR → BOS
Newark → Boston
 N77578 Boeing 737 MAX 9 Completed 519 km
2026-09-10 12:04 UTC UAL577 STL → EWR
St Louis → Newark
 N24729 Boeing 737-700 Completed 1584 km
2026-09-09 16:58 UTC UAL577 EWR → BOS
Newark → Boston
 N77585 Boeing 737 MAX 9 Completed 395 km
2026-09-09 12:11 UTC UAL577 STL → EWR
St Louis → Newark
 N24706 Boeing 737-700 Completed 1578 km
2026-09-08 12:03 UTC UAL577 STL → ?
St Louis → ?
 N23707 Boeing 737-700 Incomplete (signal lost) 961 km
2026-09-07 16:57 UTC UAL577 EWR → BOS
Newark → Boston
 N13720 Boeing 737-700 Completed 410 km
2026-09-07 12:01 UTC UAL577 STL → EWR
St Louis → Newark
 N33714 Boeing 737-700 Completed 1560 km
2026-09-06 16:56 UTC UAL577 EWR → BOS
Newark → Boston
 N17468 Boeing 737 MAX 9 Completed 368 km
2026-09-06 11:58 UTC UAL577 STL → EWR
St Louis → Newark
 N17564 Boeing 737 MAX 9 Completed 1576 km
2026-09-05 12:06 UTC UAL577 STL → EWR
St Louis → Newark
 N24736 Boeing 737-700 Completed 1636 km
2026-09-04 17:37 UTC UAL577 EWR → BOS
Newark → Boston
 N17429 Boeing 737 MAX 9 Completed 357 km

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