Flight Status & Tracker

UAL404

UNITED AIRLINES INC · SAT → IAH · Last tracked Sep 27, 2026

UAL404 is a flight number operated by UNITED AIRLINES INC between San Antonio International Airport (KSAT) and George Bush Intercontinental Houston Airport (KIAH). SkyMeter last tracked UAL404 on September 27, 2026. The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 1h 45m. SkyMeter has observed 153 legs of this flight number via ADS-B.

SkyMeter tracks historical flight activity from ADS-B data — this is not a live gate-to-gate status feed.

✈
FLIGHTS
153
last 90 days
⏱
AVG DURATION
1h 45m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 9/27/2026
first → last seen
🗺
ROUTES / TYPES
5 / 5
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

2
KSAT → KIAH
82
avg 48m · San Antonio → George Bush Intercontinental Houston
KIAH → KEWR
58
avg 3h 12m · George Bush Intercontinental Houston → Newark Liberty

Aircraft types

Equipment used on this number

5
B39M BOEING Boeing 737 MAX 9
135
A319 AIRBUS Airbus A319
47
B737 BOEING Boeing 737-700
43
B739 BOEING Boeing 737-900
7
A320 AIRBUS Airbus A320
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 UAL404

30
N898UAAIRBUS Airbus A319
→
9/27/2026
44m
No alerts
Replay Analysis
N77572BOEING Boeing 737 MAX 9
→
9/27/2026
2h 24m
No alerts
Replay Analysis
N37535BOEING Boeing 737 MAX 9
→
9/26/2026
2h 35m
No alerts
Replay Analysis
N883UAAIRBUS Airbus A319
→
9/25/2026
1h 7m
No alerts
Replay Analysis
N87442BOEING Boeing 737 MAX 9
→
9/25/2026
2h 48m
No alerts
Replay Analysis
N87442BOEING Boeing 737 MAX 9
→
9/25/2026
3h 17m
No alerts
Replay Analysis
N87442BOEING Boeing 737 MAX 9
→
9/25/2026
28m
No alerts
Replay Analysis
N816UAAIRBUS Airbus A319
→
9/24/2026
47m
No alerts
Replay Analysis
N37577BOEING Boeing 737 MAX 9
→
9/24/2026
2h 23m
No alerts
Replay Analysis
N37577BOEING Boeing 737 MAX 9
→
9/24/2026
38m
No alerts
Replay Analysis
N37577BOEING Boeing 737 MAX 9
→
9/24/2026
3h 2m
No alerts
Replay Analysis
N17719BOEING Boeing 737-700
→
9/23/2026
43m
No alerts
Replay Analysis
N77572BOEING Boeing 737 MAX 9
→
9/23/2026
2h 35m
No alerts
Replay Analysis
N77572BOEING Boeing 737 MAX 9
→
9/23/2026
3h 13m
No alerts
Replay Analysis
N77572BOEING Boeing 737 MAX 9
→
9/23/2026
38m
No alerts
Replay Analysis
N17730BOEING Boeing 737-700
→
9/22/2026
44m
No alerts
Replay Analysis
N17752BOEING Boeing 737-700
→
9/22/2026
18m
No alerts
Replay Analysis
N17752BOEING Boeing 737-700
→
9/22/2026
48m
No alerts
Replay Analysis
N17752BOEING Boeing 737-700
→
9/22/2026
29m
No alerts
Replay Analysis
N17401BOEING Boeing 737 MAX 9
→
9/21/2026
2h 46m
No alerts
Replay Analysis
N17401BOEING Boeing 737 MAX 9
→
9/21/2026
8m
No alerts
Replay Analysis
N17401BOEING Boeing 737 MAX 9
→
9/21/2026
2h 55m
No alerts
Replay Analysis
N16732BOEING Boeing 737-700
→
9/20/2026
45m
No alerts
Replay Analysis
N17423BOEING Boeing 737 MAX 9
→
9/20/2026
2h 38m
No alerts
Replay Analysis
N17423BOEING Boeing 737 MAX 9
→
9/20/2026
2h 58m
No alerts
Replay Analysis
N17423BOEING Boeing 737 MAX 9
→
9/20/2026
19m
No alerts
Replay Analysis
N27734BOEING Boeing 737-700
→
9/19/2026
1h 6m
No alerts
Replay Analysis
N67501BOEING Boeing 737 MAX 9
→
9/19/2026
2h 53m
No alerts
Replay Analysis
N54711BOEING Boeing 737-700
→
9/18/2026
56m
No alerts
Replay Analysis
N17403BOEING Boeing 737 MAX 9
→
9/18/2026
2h 39m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window