Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL577

Operated by UAL

Live map

Live map filtered to UAL577. Shown when the flight is currently airborne.

Route airports View route page →

Departure

STL KSTL VFR

St. Louis Lambert International Airport

St Louis, US

Local time
17:14 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
618 ft
Coordinates
38.7487, -90.3700

cloud Weather

Wind
-
Visibility
10 SM
Ceiling
SCT 6,500 ft
Temp / Dew
29°C / 13°C
Altimeter
30.10 inHg

Obs: 2026-08-28T21:51:00.000Z

Raw METAR / TAF 
METAR KSTL 282151Z COR 0000KT 10SM SCT065 29/13 A3010 RMK AO2 SLP183 T02890133

TAF KSTL 282103Z 2821/2924 VRB05KT P6SM SCT070 FM291500 16007KT P6SM FEW070

flight Live Traffic

flight_takeoff 87 Departures
flight_land 92 Arrivals

Arrival

EWR KEWR VFR

Newark Liberty International Airport

Newark, US

Local time
18:14 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
18 ft
Coordinates
40.6894, -74.1705

cloud Weather

Wind
320° / 13 kt
Visibility
10 SM
Ceiling
FEW 5,000 ft, FEW 8,000 ft, FEW 18,000 ft, BKN 25,000 ft
Temp / Dew
29°C / 18°C
Altimeter
30.00 inHg

Obs: 2026-08-28T21:51:00.000Z

Raw METAR / TAF 
METAR KEWR 282151Z 32013KT 10SM FEW050TCU FEW080 FEW180 BKN250 29/18 A3000 RMK AO2 SLP157 TCU SE AND DSNT E T02890183

TAF KEWR 281958Z 2820/2924 30007KT P6SM VCSH SCT040 BKN070 FM290000 33010KT P6SM SCT040 SCT070 FM290800 36008KT P6SM FEW040 FM291700 29007KT P6SM FEW250 FM292200 20007KT P6SM FEW250

flight Live Traffic

flight_takeoff 176 Departures
flight_land 206 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A0B844 IAD → DEN Jul 26, 17:40 UTCJul 26, 21:15 UTC3h 35m - -
2026-07-26 A41E94 IAD → DEN Jul 26, 12:05 UTCJul 26, 14:15 UTC2h 10m - -
2026-07-25 A0B849 IAD → DEN Jul 25, 17:40 UTCJul 25, 21:10 UTC3h 30m - -
2026-07-25 A445EE IAD → DEN Jul 25, 11:50 UTCJul 25, 13:55 UTC2h 5m - -
2026-07-24 A0B844 IAD → DEN Jul 24, 17:40 UTCJul 24, 21:10 UTC3h 30m - -
2026-07-24 A4491C IAD → DEN Jul 24, 11:50 UTCJul 24, 14:00 UTC2h 10m - -
2026-07-24 A4491C IAD → DEN Jul 24, 11:55 UTCJul 24, 13:54 UTC1h 59m -335m -5m
2026-07-23 A0B81D IAD → DEN Jul 23, 18:00 UTCJul 23, 21:45 UTC3h 45m - -
2026-07-23 AA7F25 IAD → DEN Jul 23, 11:55 UTCJul 23, 14:15 UTC2h 20m - -
2026-07-23 AA7F25 IAD → DEN Jul 23, 11:55 UTCJul 23, 14:07 UTC2h 12m +15m -6m
2026-07-22 A0B867 IAD → DEN Jul 22, 17:50 UTCJul 22, 21:40 UTC3h 50m - -
2026-07-22 A5D28C IAD → DEN Jul 22, 12:00 UTCJul 22, 14:10 UTC2h 10m - -
2026-07-22 A5D28C IAD → DEN Jul 22, 11:55 UTCJul 22, 14:09 UTC2h 14m +15m +11m
2026-07-22 A0B81D IAD → DEN Jul 22, 02:15 UTCJul 22, 05:25 UTC3h 10m - -
2026-07-21 A94BFC IAD → DEN Jul 21, 12:55 UTCJul 21, 15:15 UTC2h 20m - -
2026-07-20 A2452A IAD → DEN Jul 20, 17:55 UTCJul 20, 21:30 UTC3h 35m - -
2026-07-20 A12A9E IAD → DEN Jul 20, 12:00 UTCJul 20, 14:10 UTC2h 10m - -
2026-07-20 A12A9E IAD → DEN Jul 20, 11:55 UTCJul 20, 14:04 UTC2h 9m +15m -5m
2026-07-19 A55FA2 IAD → DEN Jul 19, 18:55 UTCJul 19, 22:25 UTC3h 30m - -
2026-07-19 A44560 IAD → DEN Jul 19, 11:50 UTCJul 19, 13:55 UTC2h 5m - -
2026-07-18 A44939 IAD → DEN Jul 18, 11:55 UTCJul 18, 14:20 UTC2h 25m - -
2026-07-17 A245B7 IAD → DEN Jul 17, 17:50 UTCJul 17, 21:10 UTC3h 20m - -
2026-07-17 A2B83B IAD → DEN Jul 17, 11:55 UTCJul 17, 14:00 UTC2h 5m - -
2026-07-16 A0B867 IAD → DEN Jul 16, 17:40 UTCJul 16, 21:05 UTC3h 25m - -
2026-07-16 A4495D MCO → EWR Jul 16, 11:54 UTCJul 16, 14:05 UTC2h 10m - -
2026-07-15 A0B88F EWR → DEN Jul 15, 17:52 UTCJul 15, 21:05 UTC3h 13m +22m -4m
2026-07-15 A0B88F - Jul 15, 17:50 UTCJul 15, 21:10 UTC3h 20m - -
2026-07-15 A94B2E MCO → EWR Jul 15, 13:25 UTCJul 15, 15:35 UTC2h 10m - -
2026-07-14 A2454F EWR → DEN Jul 14, 17:50 UTCJul 14, 21:00 UTC3h 10m - -
2026-07-14 AC0831 MCO → EWR Jul 14, 11:50 UTCJul 14, 14:05 UTC2h 15m - -

Performance history

Flights tracked
168 showing last 30
Avg arrival delay
-2m
On-time arrival
100% 100% on time
Aircraft used
22

Monthly activity 4 months

Month Flights tracked
July 2026 63
June 2026 42
May 2026 40
April 2026 23

UAL577 frequently asked

Where does flight UAL577 fly?
UAL577 (UAL) flies from STL to EWR. View the full route page.
How long is flight UAL577?
Based on observed flights, UAL577 takes on average 2h 44m from takeoff to landing.
How often does UAL577 fly?
UAL577 has been observed flying several times a week in our tracking data. We've recorded 168 flights under this callsign.
Is flight UAL577 usually on time?
Across recent flights, UAL577 arrives 2 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL577?
UAL577 has been operated by 22 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL577 live?
Yes. When UAL577 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.