UAL3900

UNITED AIRLINES INC · GRU → IAD

UAL3900 is operated by UNITED AIRLINES INC between Guarulhos - Governador André Franco Montoro International Airport (SBGR) and Washington Dulles International Airport (KIAD). The flight is most often flown by a BOEING Boeing 777-200. Typical block time is 2h 40m. SkyMeter has observed 28 legs of this flight number via ADS-B.

✈
FLIGHTS
28
last 90 days
⏱
AVG DURATION
2h 40m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/20/2026
first → last seen
🗺
ROUTES / TYPES
25 / 10
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

10
KORD → KCLE
1
avg 46m · Chicago O'Hare → Cleveland Hopkins
KSMF → KIAH
1
avg 3h 28m · Sacramento → George Bush Intercontinental Houston
KPIT → KORD
1
avg 1h 17m · Pittsburgh → Chicago O'Hare
KORD → KIAH
1
avg 2h 19m · Chicago O'Hare → George Bush Intercontinental Houston
KEWR → KDEN
1
avg 4h 9m · Newark Liberty → Denver
KIAH → KABQ
1
avg 1h 57m · George Bush Intercontinental Houston → Albuquerque International Sunport
KLAS → KSFO
1
avg 1h 13m · McCarran → San Francisco
KEWR → KCHS
1
avg 1h 45m · Newark Liberty → Charleston Air Force Base-International
KMCO → KDEN
1
avg 3h 31m · Orlando → Denver
KBWI → KORD
1
avg 1h 35m · Baltimore/Washington International Thurgood Marshall → Chicago O'Hare

Aircraft types

Equipment used on this number

10
B772 BOEING Boeing 777-200
6
A319 AIRBUS Airbus A319
4
B752 BOEING Boeing 757-200
4
B38M BOEING Boeing 737 MAX 8
3
B738 BOEING Boeing 737-800
3
B39M BOEING Boeing 737 MAX 9
3
B77W BOEING Boeing 777-300ER
3
B763 BOEING Boeing 767-300
2
B739 BOEING Boeing 737-900
2
A320 AIRBUS Airbus A320
2

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
0
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
0
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 30 operations of UAL3900

30
N87512BOEING Boeing 737-800
→
08/20/2026
3h 31m
No alerts
Replay Analysis
N821UAAIRBUS Airbus A319
→
08/18/2026
2h 10m
No alerts
Replay Analysis
N648UABOEING Boeing 767-300
→
08/11/2026
9h 27m
No alerts
Replay Analysis
N19130BOEING Boeing 757-200
→
08/08/2026
15m
No alerts
Replay Analysis
N19130BOEING Boeing 757-200
→
08/08/2026
22m
No alerts
Replay Analysis
N19130BOEING Boeing 757-200
→
08/08/2026
4h 9m
No alerts
Replay Analysis
N14521AIRBUS Airbus A321 Neo
→
08/02/2026
1h 5m
No alerts
Replay Analysis
N652UABOEING Boeing 767-300
→
08/01/2026
2h 18m
No alerts
Replay Analysis
N804UAAIRBUS Airbus A319
→
07/27/2026
2h 9m
No alerts
Replay Analysis
N2639UBOEING Boeing 777-300ER
→
07/26/2026
1h 0m
No alerts
Replay Analysis
N2639UBOEING Boeing 777-300ER
→
07/25/2026
5h 28m
No alerts
Replay Analysis
N2639UBOEING Boeing 777-300ER
→
07/25/2026
4h 27m
No alerts
Replay Analysis
N37563BOEING Boeing 737 MAX 9
→
07/20/2026
1h 44m
No alerts
Replay Analysis
N4901UAIRBUS Airbus A320
→
07/19/2026
3h 27m
No alerts
Replay Analysis
N14106BOEING Boeing 757-200
→
07/15/2026
2h 1m
No alerts
Replay Analysis
N17574BOEING Boeing 737 MAX 9
→
07/11/2026
45m
No alerts
Replay Analysis
N37474BOEING Boeing 737-900
→
07/06/2026
7h 6m
No alerts
Replay Analysis
N38443BOEING Boeing 737-900
→
07/04/2026
1h 57m
No alerts
Replay Analysis
N875UAAIRBUS Airbus A319
→
07/02/2026
56m
No alerts
Replay Analysis
N218UABOEING Boeing 777-200
→
06/30/2026
1h 46m
No alerts
Replay Analysis
N218UABOEING Boeing 777-200
→
06/29/2026
1h 22m
No alerts
Replay Analysis
N218UABOEING Boeing 777-200
→
06/29/2026
3h 9m
No alerts
Replay Analysis
N809UAAIRBUS Airbus A319
→
06/28/2026
1h 51m
No alerts
Replay Analysis
N47281BOEING Boeing 737 MAX 8
→
06/22/2026
1h 1m
No alerts
Replay Analysis
N784UABOEING Boeing 777-200
→
06/20/2026
1h 37m
No alerts
Replay Analysis
N784UABOEING Boeing 777-200
→
06/19/2026
3h 17m
No alerts
Replay Analysis
N784UABOEING Boeing 777-200
→
06/19/2026
1h 39m
No alerts
Replay Analysis
N17337BOEING Boeing 737 MAX 8
→
06/14/2026
57m
No alerts
Replay Analysis
N487UAAIRBUS Airbus A320
→
06/12/2026
1h 16m
No alerts
Replay Analysis
N17300BOEING Boeing 737 MAX 8
→
06/12/2026
53m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window