UAL3900

UNITED AIRLINES INC · EWR → IAD

UAL3900 is operated by UNITED AIRLINES INC between Newark Liberty International Airport (KEWR) and Washington Dulles International Airport (KIAD). The flight is most often flown by a BOEING Boeing 777-200. Typical block time is 2h 44m. SkyMeter has observed 22 legs of this flight number via ADS-B.

✈
FLIGHTS
22
last 90 days
⏱
AVG DURATION
2h 44m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 07/19/2026
first → last seen
🗺
ROUTES / TYPES
20 / 10
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

10
KDEN → KORD
1
avg 2h 11m · Denver → Chicago O'Hare
KSMF → KIAH
1
avg 3h 28m · Sacramento → George Bush Intercontinental Houston
KBWI → KORD
1
avg 1h 35m · Baltimore/Washington International Thurgood Marshall → Chicago O'Hare
KORD → KDCA
1
avg 1h 51m · Chicago O'Hare → Ronald Reagan Washington National
KEWR → KIAD
1
avg 1h 9m · Newark Liberty → Washington Dulles
KPIT → KORD
1
avg 1h 17m · Pittsburgh → Chicago O'Hare
KLAS → KSFO
1
avg 1h 13m · McCarran → San Francisco
KIAH → KABQ
1
avg 1h 57m · George Bush Intercontinental Houston → Albuquerque International Sunport
KIAD → KIAH
1
avg 3h 17m · Washington Dulles → George Bush Intercontinental Houston
KORD → KCLE
1
avg 46m · Chicago O'Hare → Cleveland Hopkins

Aircraft types

Equipment used on this number

10
B772 BOEING Boeing 777-200
6
B739 BOEING Boeing 737-900
4
B38M BOEING Boeing 737 MAX 8
3
B788 BOEING Boeing 787-8 BBJ/Dreamliner
3
A320 AIRBUS Airbus A320
2
B39M BOEING Boeing 737 MAX 9
2
B752 BOEING Boeing 757-200
2
B738 BOEING Boeing 737-800
2
A319 AIRBUS Airbus A319
2
B764 BOEING Boeing 767-400
1

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
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
1h 39m
No alerts
Replay Analysis
N784UABOEING Boeing 777-200
→
06/19/2026
3h 17m
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
N14235BOEING Boeing 737-800
→
06/10/2026
1h 13m
No alerts
Replay Analysis
N37287BOEING Boeing 737-800
→
06/06/2026
1h 34m
No alerts
Replay Analysis
N68061BOEING Boeing 767-400
→
06/01/2026
9h 10m
No alerts
Replay Analysis
N17593BOEING Boeing 737 MAX 9
→
05/26/2026
1h 36m
No alerts
Replay Analysis
N20904BOEING Boeing 787-8 BBJ/Dreamliner
→
05/16/2026
1h 6m
No alerts
Replay Analysis
N20904BOEING Boeing 787-8 BBJ/Dreamliner
→
05/15/2026
10h 42m
No alerts
Replay Analysis
N20904BOEING Boeing 787-8 BBJ/Dreamliner
→
05/15/2026
9h 35m
No alerts
Replay Analysis
N654UABOEING Boeing 767-300
→
05/08/2026
1h 9m
No alerts
Replay Analysis
N34137BOEING Boeing 757-200
→
05/03/2026
3h 37m
No alerts
Replay Analysis
N62849BOEING Boeing 737-900
→
04/28/2026
2h 11m
No alerts
Replay Analysis
N62849BOEING Boeing 737-900
→
04/28/2026
20m
No alerts
Replay Analysis
N17264BOEING Boeing 737 MAX 8
→
04/09/2026
6h 38m
No alerts
Replay Analysis
N795UABOEING Boeing 777-200
→
04/05/2026
2h 58m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window