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United Airlines

Is UA255 delayed?

Service date: · Scheduled departure date (America/Denver)

Arrived

22 min late

Updated

Departure

Denver

DEN

Actual

Scheduled 07:40

Aug 30

Arrival

Boise

BOI

Actual

Scheduled 15:35

Aug 30

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • DEN → BOI

    8 min early

  • DEN → BOI

    11 min early

  • DEN → BOI

    8 min early

  • DEN → BOI

    5 min late

  • DEN → BOI

    9 min early
Flight history and details

Aug 18, 2026 — Sep 17, 2026

Observed arrivals
22
Arrivals over 15 minutes late
3
Observed cancellations
0
Observed occurrences
29

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

UA255 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 16, 2026ArrivedDenverBoise
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-8
Sep 14, 2026ArrivedDenverBoise
-11
Sep 11, 2026ArrivedDenverBoise
-8
Sep 10, 2026ArrivedDenverBoise
5
Sep 9, 2026ArrivedDenverBoise
-9
Sep 8, 2026ArrivedDenverBoise
5
Sep 7, 2026ArrivedDenverBoise
-9
Sep 6, 2026ArrivedDenverBoise
24
Sep 5, 2026ArrivedDenverBoise
-8
Sep 4, 2026ArrivedDenverBoise
-25
Sep 1, 2026ArrivedDenverBoise
-9
Aug 31, 2026ArrivedDenverBoise
75
Aug 30, 2026ArrivedDenverBoise
22
Aug 29, 2026ArrivedDenverBoise
-10
Aug 28, 2026ArrivedDenverBoise
-11
Aug 27, 2026ArrivedDenverBoise
-18
Aug 26, 2026ArrivedDenverBoise
-12
Aug 25, 2026ArrivedDenverBoise
-4
Aug 23, 2026ArrivedDenverBoise
-7
Aug 21, 2026ArrivedDenverBoise
-14
Aug 20, 2026ArrivedDenverBoise
-12
Aug 18, 2026ArrivedDenverBoise
-6

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