UAL556 is operated by UNITED AIRLINES INC between Newark Liberty International Airport (KEWR) and George Bush Intercontinental Houston Airport (KIAH). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 2h 49m. SkyMeter has observed 20 legs of this flight number via ADS-B.

✈
FLIGHTS
20
last 90 days
⏱
AVG DURATION
2h 49m
tracked time
📅
SERVICE PERIOD
04/17/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
3 / 5
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

2
KEWR → KIAH
11
avg 3h 26m · Newark Liberty → George Bush Intercontinental Houston
KATL → KEWR
8
avg 1h 52m · Hartsfield Jackson Atlanta → Newark Liberty

Aircraft types

Equipment used on this number

5
B739 BOEING Boeing 737-900
14
A319 AIRBUS Airbus A319
3
B38M BOEING Boeing 737 MAX 8
1
B737 BOEING Boeing 737-700
1
B39M BOEING Boeing 737 MAX 9
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 20 operations of UAL556

20
N37456BOEING Boeing 737-900
→
06/03/2026
3h 10m
No alerts
Replay Analysis
N37465BOEING Boeing 737-900
→
06/02/2026
3h 18m
No alerts
Replay Analysis
N63899BOEING Boeing 737-900
→
06/01/2026
3h 14m
No alerts
Replay Analysis
N68842BOEING Boeing 737-900
→
05/31/2026
3h 22m
No alerts
Replay Analysis
N66814BOEING Boeing 737-900
→
05/29/2026
3h 22m
No alerts
Replay Analysis
N67845BOEING Boeing 737-900
→
05/28/2026
3h 12m
No alerts
Replay Analysis
N36447BOEING Boeing 737-900
→
05/27/2026
3h 57m
No alerts
Replay Analysis
N69810BOEING Boeing 737-900
→
05/26/2026
3h 22m
No alerts
Replay Analysis
N69829BOEING Boeing 737-900
→
05/25/2026
3h 37m
No alerts
Replay Analysis
N17433BOEING Boeing 737 MAX 9
→
05/24/2026
3h 29m
No alerts
Replay Analysis
N38417BOEING Boeing 737-900
→
05/23/2026
3h 42m
No alerts
Replay Analysis
N53442BOEING Boeing 737-900
→
05/21/2026
3h 41m
No alerts
Replay Analysis
N854UAAIRBUS Airbus A319
→
05/20/2026
1h 58m
No alerts
Replay Analysis
N889UAAIRBUS Airbus A319
→
05/18/2026
1h 47m
No alerts
Replay Analysis
N816UAAIRBUS Airbus A319
→
05/17/2026
1h 52m
No alerts
Replay Analysis
N68452BOEING Boeing 737-900
→
04/23/2026
1h 54m
No alerts
Replay Analysis
N38446BOEING Boeing 737-900
→
04/21/2026
1h 55m
No alerts
Replay Analysis
N17594BOEING Boeing 737-900
→
04/20/2026
1h 47m
No alerts
Replay Analysis
N17355BOEING Boeing 737 MAX 8
→
04/19/2026
1h 38m
No alerts
Replay Analysis
N16703BOEING Boeing 737-700
→
04/17/2026
2h 5m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window