UAL3939

UNITED AIRLINES INC · IAD → EWR

UAL3939 is operated by UNITED AIRLINES INC between Washington Dulles International Airport (KIAD) and Newark Liberty International Airport (KEWR). The flight is most often flown by a BOEING Boeing 737-700. Typical block time is 1h 51m. SkyMeter has observed 28 legs of this flight number via ADS-B.

✈
FLIGHTS
28
last 90 days
⏱
AVG DURATION
1h 51m
tracked time
📅
SERVICE PERIOD
12/1/2025 → 8/11/2026
first → last seen
🗺
ROUTES / TYPES
24 / 10
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

10
KIAH → KIAD
2
avg 2h 37m · George Bush Intercontinental Houston → Washington Dulles
KIAD → KEWR
2
avg 1h 3m · Washington Dulles → Newark Liberty
KCMH → KDTW
1
avg 41m · John Glenn Columbus → Detroit Metropolitan Wayne County
KMCI → KDEN
1
avg 1h 30m · Kansas City → Denver
KSAT → KPBI
1
avg 3h 3m · San Antonio → Palm Beach
KLAX → KSNA
1
avg 38m · Los Angeles → John Wayne Airport-Orange County
TJSJ → KEWR
1
avg 3h 35m · Luis Munoz Marin → Newark Liberty
KDEN → KORD
1
avg 2h 23m · Denver → Chicago O'Hare
KBOS → KEWR
1
avg 1h 4m · General Edward Lawrence Logan → Newark Liberty
KIAD → KORD
1
avg 2h 5m · Washington Dulles → Chicago O'Hare

Aircraft types

Equipment used on this number

10
B737 BOEING Boeing 737-700
7
A319 AIRBUS Airbus A319
4
B738 BOEING Boeing 737-800
4
B39M BOEING Boeing 737 MAX 9
4
A320 AIRBUS Airbus A320
3
B772 BOEING Boeing 777-200
3
B38M BOEING Boeing 737 MAX 8
3
B739 BOEING Boeing 737-900
3
B764 BOEING Boeing 767-400
2
A21N AIRBUS Airbus A321 Neo
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 UAL3939

30
N13750BOEING Boeing 737-700
→
8/12/2026
1h 43m
No alerts
Replay Analysis
N13750BOEING Boeing 737-700
→
8/11/2026
2h 31m
No alerts
Replay Analysis
N13750BOEING Boeing 737-700
→
8/11/2026
4h 15m
No alerts
Replay Analysis
N25982BOEING Boeing 787-9 Dreamliner
→
8/10/2026
3h 35m
No alerts
Replay Analysis
N817UAAIRBUS Airbus A319
→
8/8/2026
2h 54m
No alerts
Replay Analysis
N817UAAIRBUS Airbus A319
→
8/7/2026
8m
No alerts
Replay Analysis
N817UAAIRBUS Airbus A319
→
8/7/2026
3h 3m
No alerts
Replay Analysis
N14107BOEING Boeing 757-200
→
8/6/2026
2h 44m
No alerts
Replay Analysis
N21723BOEING Boeing 737-700
→
8/5/2026
39m
No alerts
Replay Analysis
N21723BOEING Boeing 737-700
→
8/4/2026
57m
No alerts
Replay Analysis
N21723BOEING Boeing 737-700
→
8/4/2026
1h 36m
No alerts
Replay Analysis
N37305BOEING Boeing 737 MAX 8
→
7/31/2026
1h 30m
No alerts
Replay Analysis
N97424BOEING Boeing 737 MAX 9
→
7/29/2026
38m
No alerts
Replay Analysis
N97424BOEING Boeing 737 MAX 9
→
7/28/2026
26m
No alerts
Replay Analysis
N97424BOEING Boeing 737 MAX 9
→
7/28/2026
1h 5m
No alerts
Replay Analysis
N76516BOEING Boeing 737-800
→
7/27/2026
5m
No alerts
Replay Analysis
N76516BOEING Boeing 737-800
→
7/26/2026
11m
No alerts
Replay Analysis
N17430BOEING Boeing 737 MAX 9
→
7/25/2026
2h 27m
No alerts
Replay Analysis
N17326BOEING Boeing 737 MAX 8
→
7/22/2026
38m
No alerts
Replay Analysis
N76055BOEING Boeing 767-400
→
7/21/2026
1h 0m
No alerts
Replay Analysis
N475UAAIRBUS Airbus A320
→
7/18/2026
40m
No alerts
Replay Analysis
N452UAAIRBUS Airbus A320
→
7/11/2026
1h 32m
No alerts
Replay Analysis
N452UAAIRBUS Airbus A320
→
7/11/2026
7m
No alerts
Replay Analysis
N78060BOEING Boeing 767-400
→
7/4/2026
1h 6m
No alerts
Replay Analysis
N18243BOEING Boeing 737-800
→
6/30/2026
3h 38m
No alerts
Replay Analysis
N38424BOEING Boeing 737-900
→
6/21/2026
1h 4m
No alerts
Replay Analysis
N78008BOEING Boeing 777-200
→
6/19/2026
2h 28m
No alerts
Replay Analysis
N218UABOEING Boeing 777-200
→
6/17/2026
2h 39m
No alerts
Replay Analysis
N78285BOEING Boeing 737-800
→
6/16/2026
2h 5m
No alerts
Replay Analysis
N69888BOEING Boeing 737-900
→
6/12/2026
6m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window