UAL604 is operated by UNITED AIRLINES INC between George Bush Intercontinental Houston Airport (KIAH) and Baltimore/Washington International Thurgood Marshall Airport (KBWI). The flight is most often flown by a BOEING Boeing 777-200. Typical block time is 3h 14m. SkyMeter has observed 151 legs of this flight number via ADS-B.

✈
FLIGHTS
151
last 90 days
⏱
AVG DURATION
3h 14m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 9/4/2026
first → last seen
🗺
ROUTES / TYPES
8 / 9
city pairs · airframes
⚠
INCIDENT RATE
2.6%
4 flagged

Routes flown

By count · last 90 days

5
KIAH → KBWI
59
avg 2h 41m · George Bush Intercontinental Houston → Baltimore/Washington International Thurgood Marshall
KSFO → KIAH
52
avg 3h 36m · San Francisco → George Bush Intercontinental Houston
KHAF → KIAH
29
avg 3h 34m · Half Moon Bay → George Bush Intercontinental Houston
US-0188 → KIAH
5
avg 3h 32m · Coast Guard Air Station San Francisco → George Bush Intercontinental Houston
KOAK → KIAH
3
avg 3h 38m · Metropolitan Oakland → George Bush Intercontinental Houston

Aircraft types

Equipment used on this number

9
B772 BOEING Boeing 777-200
89
B39M BOEING Boeing 737 MAX 9
28
B739 BOEING Boeing 737-900
20
B738 BOEING Boeing 737-800
6
B737 BOEING Boeing 737-700
3
A319 AIRBUS Airbus A319
2
A320 AIRBUS Airbus A320
1
B77W BOEING Boeing 777-300ER
1
B38M BOEING Boeing 737 MAX 8
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
4
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 UAL604

30
N31412BOEING Boeing 737-900
→
9/4/2026
2h 35m
No alerts
Replay Analysis
N773UABOEING Boeing 777-200
→
9/4/2026
3h 32m
No alerts
Replay Analysis
N37408BOEING Boeing 737-900
→
9/3/2026
2h 54m
No alerts
Replay Analysis
N222UABOEING Boeing 777-200
→
9/3/2026
3h 30m
No alerts
Replay Analysis
N14731BOEING Boeing 737-700
→
9/2/2026
2h 58m
△ Low approach-stability score
Replay Analysis
N781UABOEING Boeing 777-200
→
9/2/2026
3h 31m
No alerts
Replay Analysis
N78448BOEING Boeing 737-900
→
9/1/2026
2h 37m
No alerts
Replay Analysis
N771UABOEING Boeing 777-200
→
9/1/2026
3h 30m
No alerts
Replay Analysis
N31412BOEING Boeing 737-900
→
8/31/2026
2h 40m
No alerts
Replay Analysis
N215UABOEING Boeing 777-200
→
8/31/2026
3h 42m
No alerts
Replay Analysis
N35407BOEING Boeing 737-900
→
8/30/2026
2h 50m
No alerts
Replay Analysis
N769UABOEING Boeing 777-200
→
8/30/2026
4h 0m
No alerts
Replay Analysis
N875UAAIRBUS Airbus A319
→
8/29/2026
2h 43m
No alerts
Replay Analysis
N781UABOEING Boeing 777-200
→
8/29/2026
3h 24m
No alerts
Replay Analysis
N32404BOEING Boeing 737-900
→
8/28/2026
2h 40m
No alerts
Replay Analysis
N215UABOEING Boeing 777-200
→
8/28/2026
3h 34m
No alerts
Replay Analysis
N35407BOEING Boeing 737-900
→
8/27/2026
2h 41m
No alerts
Replay Analysis
N773UABOEING Boeing 777-200
→
8/27/2026
3h 33m
No alerts
Replay Analysis
N210UABOEING Boeing 777-200
→
8/26/2026
3h 30m
No alerts
Replay Analysis
N37352BOEING Boeing 737 MAX 8
→
8/25/2026
2h 46m
No alerts
Replay Analysis
N774UABOEING Boeing 777-200
→
8/25/2026
3h 21m
No alerts
Replay Analysis
N72405BOEING Boeing 737-900
→
8/24/2026
2h 43m
No alerts
Replay Analysis
N776UABOEING Boeing 777-200
→
8/24/2026
3h 34m
No alerts
Replay Analysis
N32404BOEING Boeing 737-900
→
8/23/2026
2h 55m
No alerts
Replay Analysis
N776UABOEING Boeing 777-200
→
8/23/2026
3h 16m
No alerts
Replay Analysis
N4888UAIRBUS Airbus A319
→
8/22/2026
2h 46m
No alerts
Replay Analysis
N215UABOEING Boeing 777-200
→
8/22/2026
3h 38m
No alerts
Replay Analysis
N37409BOEING Boeing 737-900
→
8/21/2026
2h 33m
No alerts
Replay Analysis
N210UABOEING Boeing 777-200
→
8/21/2026
4h 1m
No alerts
Replay Analysis
N38403BOEING Boeing 737-900
→
8/20/2026
2h 44m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window