UAL3903

UNITED AIRLINES INC · IAH → DEN

UAL3903 is operated by UNITED AIRLINES INC between George Bush Intercontinental Houston Airport (KIAH) and Denver International Airport (KDEN). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 1h 57m. SkyMeter has observed 35 legs of this flight number via ADS-B.

✈
FLIGHTS
35
last 90 days
⏱
AVG DURATION
1h 57m
tracked time
📅
SERVICE PERIOD
5/28/2025 → 9/3/2026
first → last seen
🗺
ROUTES / TYPES
32 / 10
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

10
KORD → KIAD
2
avg 1h 47m · Chicago O'Hare → Washington Dulles
KIAH → KDEN
2
avg 2h 17m · George Bush Intercontinental Houston → Denver
KSFO → KDEN
2
avg 2h 24m · San Francisco → Denver
KONT → KLAX
1
avg 21m · Ontario → Los Angeles
KBNA → KMSP
1
avg 1h 52m · Nashville → Minneapolis-St Paul International/Wold-Chamberlain
KIAH → KIAD
1
avg 2h 41m · George Bush Intercontinental Houston → Washington Dulles
KBNA → KDEN
1
avg 2h 42m · Nashville → Denver
EGPH → KIAD
1
avg 8h 1m · Edinburgh → Washington Dulles
KIAD → KSFO
1
avg 5h 0m · Washington Dulles → San Francisco
KDEN → KIAD
1
avg 3h 5m · Denver → Washington Dulles

Aircraft types

Equipment used on this number

10
B739 BOEING Boeing 737-900
10
B752 BOEING Boeing 757-200
5
A320 AIRBUS Airbus A320
4
B38M BOEING Boeing 737 MAX 8
4
B788 BOEING Boeing 787-8 BBJ/Dreamliner
4
A319 AIRBUS Airbus A319
3
B39M BOEING Boeing 737 MAX 9
2
B789 BOEING Boeing 787-9 Dreamliner
2
B753 BOEING Boeing 757-300
1
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 UAL3903

30
N17104BOEING Boeing 757-200
→
9/3/2026
8h 1m
No alerts
Replay Analysis
N14102BOEING Boeing 757-200
→
9/2/2026
1h 31m
No alerts
Replay Analysis
N14102BOEING Boeing 757-200
→
9/2/2026
14m
No alerts
Replay Analysis
N651UABOEING Boeing 767-300
→
8/29/2026
2h 40m
No alerts
Replay Analysis
N33132BOEING Boeing 757-200
→
8/28/2026
2h 41m
No alerts
Replay Analysis
N57409BOEING Boeing 737 MAX 9
→
8/25/2026
1h 39m
No alerts
Replay Analysis
N66831BOEING Boeing 737-900
→
8/24/2026
20m
No alerts
Replay Analysis
N17300BOEING Boeing 737 MAX 8
→
8/20/2026
2h 9m
No alerts
Replay Analysis
N18119BOEING Boeing 757-200
→
8/18/2026
3h 5m
No alerts
Replay Analysis
N29907BOEING Boeing 787-8 BBJ/Dreamliner
→
8/16/2026
3h 37m
No alerts
Replay Analysis
N29907BOEING Boeing 787-8 BBJ/Dreamliner
→
8/15/2026
4h 59m
No alerts
Replay Analysis
N29907BOEING Boeing 787-8 BBJ/Dreamliner
→
8/15/2026
1h 20m
No alerts
Replay Analysis
N17302BOEING Boeing 737 MAX 8
→
8/14/2026
45m
No alerts
Replay Analysis
N66828BOEING Boeing 737-900
→
8/11/2026
1h 18m
No alerts
Replay Analysis
N66828BOEING Boeing 737-900
→
8/10/2026
1h 23m
No alerts
Replay Analysis
N66828BOEING Boeing 737-900
→
8/10/2026
2h 41m
No alerts
Replay Analysis
N78448BOEING Boeing 737-900
→
8/7/2026
1h 56m
No alerts
Replay Analysis
N29981BOEING Boeing 787-9 Dreamliner
→
8/4/2026
2h 27m
No alerts
Replay Analysis
N835UAAIRBUS Airbus A319
→
8/1/2026
1h 20m
No alerts
Replay Analysis
N802UAAIRBUS Airbus A319
→
7/30/2026
1h 52m
No alerts
Replay Analysis
N28478BOEING Boeing 737-900
→
7/28/2026
1h 52m
No alerts
Replay Analysis
N57857BOEING Boeing 757-300
→
7/25/2026
2h 8m
No alerts
Replay Analysis
N451UAAIRBUS Airbus A320
→
7/23/2026
1h 8m
⤓ Emergency descent
Replay Analysis
N451UAAIRBUS Airbus A320
→
7/22/2026
16m
No alerts
Replay Analysis
N451UAAIRBUS Airbus A320
→
7/22/2026
53m
No alerts
Replay Analysis
N68821BOEING Boeing 737-900
→
7/21/2026
5m
No alerts
Replay Analysis
N68821BOEING Boeing 737-900
→
7/21/2026
1h 9m
No alerts
Replay Analysis
N17317BOEING Boeing 737 MAX 8
→
7/20/2026
6h 10m
No alerts
Replay Analysis
N69840BOEING Boeing 737-900
→
7/19/2026
41m
No alerts
Replay Analysis
N81107
→
7/11/2026
1h 46m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window