Flight Status & Tracker

ASH4040

UNITED AIRLINES INC · IAH → TUS · Last tracked Sep 23, 2026

ASH4040 is a flight number operated by UNITED AIRLINES INC between George Bush Intercontinental Houston Airport (KIAH) and Tucson International Airport / Morris Air National Guard Base (KTUS). SkyMeter last tracked ASH4040 on September 23, 2026. The flight is most often flown by a EMBRAER Embraer 175 long wing. Typical block time is 1h 54m. SkyMeter has observed 61 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
61
last 90 days
⏱
AVG DURATION
1h 54m
tracked time
📅
SERVICE PERIOD
9/27/2025 → 9/23/2026
first → last seen
🗺
ROUTES / TYPES
4 / 1
city pairs · airframes
⚠
INCIDENT RATE
1.6%
1 flagged

Routes flown

By count · last 90 days

3
40
avg 2h 3m · George Bush Intercontinental Houston → Tucson International Airport / Morris Air National Guard Base
16
avg 1h 46m · George Bush Intercontinental Houston → Louisville Muhammad Ali
4
avg 1h 8m · Washington Dulles → Syracuse Hancock

Aircraft types

Equipment used on this number

1

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 ASH4040

30
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window