UAL1977

UNITED AIRLINES INC · IAH → BOS

UAL1977 is operated by UNITED AIRLINES INC between George Bush Intercontinental Houston Airport (KIAH) and General Edward Lawrence Logan International Airport (KBOS). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 3h 32m. SkyMeter has observed 85 legs of this flight number via ADS-B.

✈
FLIGHTS
85
last 90 days
⏱
AVG DURATION
3h 32m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/12/2026
first → last seen
🗺
ROUTES / TYPES
3 / 4
city pairs · airframes
⚠
INCIDENT RATE
1.2%
1 flagged

Routes flown

By count · last 90 days

1
KIAH → KBOS
83
avg 3h 24m · George Bush Intercontinental Houston → General Edward Lawrence Logan

Aircraft types

Equipment used on this number

4
B739 BOEING Boeing 737-900
43
B738 BOEING Boeing 737-800
21
B39M BOEING Boeing 737 MAX 9
19
B38M BOEING Boeing 737 MAX 8
2

Safety profile

Flagged flights · last 90 days

Go-arounds
1
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 UAL1977

30
N37470BOEING Boeing 737-900
→
8/12/2026
3h 23m
No alerts
Replay Analysis
N37419BOEING Boeing 737-900
→
8/11/2026
3h 27m
No alerts
Replay Analysis
N39418BOEING Boeing 737-900
→
8/10/2026
3h 33m
No alerts
Replay Analysis
N62894BOEING Boeing 737-900
→
8/8/2026
3h 19m
No alerts
Replay Analysis
N14230BOEING Boeing 737-800
→
8/7/2026
3h 29m
No alerts
Replay Analysis
N77585BOEING Boeing 737 MAX 9
→
8/6/2026
3h 23m
No alerts
Replay Analysis
N77296BOEING Boeing 737-800
→
8/5/2026
3h 25m
No alerts
Replay Analysis
N61882BOEING Boeing 737-900
→
8/4/2026
3h 31m
No alerts
Replay Analysis
N34455BOEING Boeing 737-900
→
8/3/2026
3h 30m
No alerts
Replay Analysis
N37548BOEING Boeing 737 MAX 9
→
8/2/2026
3h 12m
No alerts
Replay Analysis
N37541BOEING Boeing 737 MAX 9
→
8/1/2026
2h 39m
No alerts
Replay Analysis
N76523BOEING Boeing 737-800
→
7/31/2026
3h 24m
No alerts
Replay Analysis
N68842BOEING Boeing 737-900
→
7/30/2026
3h 28m
No alerts
Replay Analysis
N77258BOEING Boeing 737-800
→
7/29/2026
3h 39m
No alerts
Replay Analysis
N38424BOEING Boeing 737-900
→
7/28/2026
3h 43m
No alerts
Replay Analysis
N39416BOEING Boeing 737-900
→
7/27/2026
3h 25m
No alerts
Replay Analysis
N17591BOEING Boeing 737 MAX 9
→
7/26/2026
3h 26m
No alerts
Replay Analysis
N35271BOEING Boeing 737-800
→
7/25/2026
3h 15m
No alerts
Replay Analysis
N76504BOEING Boeing 737-800
→
7/24/2026
3h 26m
No alerts
Replay Analysis
N39463BOEING Boeing 737-900
→
7/23/2026
3h 33m
No alerts
Replay Analysis
N34460BOEING Boeing 737-900
→
7/21/2026
3h 31m
No alerts
Replay Analysis
N37468BOEING Boeing 737-900
→
7/20/2026
3h 38m
No alerts
Replay Analysis
N37506BOEING Boeing 737 MAX 9
→
7/19/2026
3h 25m
No alerts
Replay Analysis
N17595BOEING Boeing 737 MAX 9
→
7/18/2026
3h 23m
No alerts
Replay Analysis
N69840BOEING Boeing 737-900
→
7/17/2026
3h 22m
No alerts
Replay Analysis
N67846BOEING Boeing 737-900
→
7/16/2026
3h 19m
No alerts
Replay Analysis
N37253BOEING Boeing 737-800
→
7/15/2026
3h 26m
No alerts
Replay Analysis
N68842BOEING Boeing 737-900
→
7/14/2026
3h 30m
No alerts
Replay Analysis
N62894BOEING Boeing 737-900
→
7/13/2026
3h 29m
No alerts
Replay Analysis
N17432BOEING Boeing 737 MAX 9
→
7/12/2026
3h 29m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window