UAL178 is operated by UNITED AIRLINES INC between Leonardo da Vinci–Fiumicino Airport (LIRF) and Denver International Airport (KDEN). The flight is most often flown by a BOEING Boeing 787-9 Dreamliner. Typical block time is 9h 20m. SkyMeter has observed 101 legs of this flight number via ADS-B.

FLIGHTS
101
last 90 days
AVG DURATION
9h 20m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/12/2026
first → last seen
🗺
ROUTES / TYPES
10 / 1
city pairs · airframes
INCIDENT RATE
1.0%
1 flagged

Routes flown

By count · last 90 days

6
64
avg 10h 55m · Leonardo da Vinci–Fiumicino → Denver
1
avg 16m · Lindys Airpark → Denver
1
avg 3h 57m · Washington Dulles → Denver
1
avg 9h 5m · Leonardo da Vinci–Fiumicino → Washington Dulles
1
avg 2h 2m · Leonardo da Vinci–Fiumicino → Frankfurt am Main
1
avg 21m · Simons → Denver

Aircraft types

Equipment used on this number

1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
1
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 UAL178

30
7/24/2026
10h 43m
△ Low approach-stability score
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window