ASH4055

UNITED AIRLINES INC · IAD RDU

ASH4055 is operated by UNITED AIRLINES INC between Washington Dulles International Airport (KIAD) and Raleigh Durham International Airport (KRDU). The flight is most often flown by a EMBRAER Embraer 175 long wing. Typical block time is 1h 22m. SkyMeter has observed 71 legs of this flight number via ADS-B.

FLIGHTS
71
last 90 days
AVG DURATION
1h 22m
tracked time
📅
SERVICE PERIOD
09/25/2025 → 08/22/2026
first → last seen
🗺
ROUTES / TYPES
10 / 1
city pairs · airframes
INCIDENT RATE
2.8%
2 flagged

Routes flown

By count · last 90 days

7
36
avg 1h 10m · Washington Dulles → Raleigh Durham
18
avg 1h 11m · Detroit Metropolitan Wayne County → Washington Dulles
7
avg 2h 51m · Ronald Reagan Washington National → George Bush Intercontinental Houston
2
avg 1h 14m · Coleman A. Young → Washington Dulles
1
avg 38m · Charlotte Douglas → Raleigh Durham
1
avg 1h 42m · Washington Dulles → Charlotte Douglas
1
avg 59m · L & L Heliport → Washington Dulles

Aircraft types

Equipment used on this number

1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
2
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 ASH4055

30
08/03/2026
1h 6m
△ Low approach-stability score
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window