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United Airlines

Is UA5866 delayed?

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

Arrived

28 min early

Official source · Updated

Departure

Chicago

ORD

Scheduled

Sep 8

Arrival

Bozeman

BZN

Actual

Scheduled 21:33

Sep 8

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Not available
Actual

Recent arrivals

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

  • ORD → BZN

    On time

  • ORD → BZN

    180 min late

  • ORD → BZN

    3 min early

  • ORD → BZN

    140 min late

  • ORD → BZN

    3 min late
Flight history and details

Aug 20, 2026 — Sep 19, 2026

Observed arrivals
11
Arrivals over 15 minutes late
2
Observed cancellations
0
Observed occurrences
17

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

UA5866 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 18, 2026ArrivedChicagoBozeman
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0
Sep 17, 2026ArrivedChicagoBozeman
180
Sep 16, 2026ArrivedChicagoBozeman
-3
Sep 15, 2026ArrivedChicagoBozeman
140
Sep 14, 2026ArrivedChicagoBozeman
3
Sep 11, 2026ArrivedChicagoBozeman
-20
Sep 10, 2026ArrivedChicagoBozeman
12
Sep 9, 2026ArrivedChicagoBozeman
7
Sep 8, 2026ArrivedChicagoBozeman
-28
Sep 7, 2026ArrivedDenverBillings
-15
Sep 4, 2026ArrivedDenverBillings
-7

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