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Is UA5666 delayed?

No — UA5666 landed in Denver 23 min early, at 17:23 on Sep 29 (as of Sep 29, 23:23 UTC).

Usually on time: arrived within 15 min of schedule on 21 of the last 26 flights.

Arrived

23 min early

Official source · Updated

Departure

Idaho Falls

IDA

Scheduled

Sep 29

Arrival

Denver

DEN

Actual

Scheduled 17:46

Sep 29

Times shown in airport local time

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

Market settled: On time.

View this flight’s marketHow this market settles

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Not available
Actual
View this flight’s market

Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.

Recent arrivals

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

  • Idaho Falls → Denver

    23 min early

  • Idaho Falls → Denver

    27 min early

  • Idaho Falls → Denver

    26 min early

  • Idaho Falls → Denver

    74 min late

  • Idaho Falls → Denver

    150 min late

Is UA5666 usually late?

Observation window: Aug 31, 2026 – Sep 30, 2026

Observed arrivals
26
On time
81%
of 26 arrivals
Late
19%
of 26 arrivals
Cancelled
0%
of 26 flights
Median arrival delay
17 min early
9 in 10 arrived within
69 min

On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. 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

At the airports today

Denver (DEN) departures

Left more than 15 min late
114 of 706
Cancelled today
4

Related flights

Other flights KIDA → DEN

All United Airlines flights

Flight history and details
UA5666 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 29, 2026ArrivedIdaho FallsDenver
View this flight’s market
-23
Sep 28, 2026ArrivedIdaho FallsDenver-27
Sep 27, 2026ArrivedIdaho FallsDenver-26
Sep 26, 2026ArrivedIdaho FallsDenver74
Sep 25, 2026ArrivedIdaho FallsDenver150
Sep 24, 2026ArrivedIdaho FallsDenver63
Sep 23, 2026ArrivedIdaho FallsDenver-36
Sep 22, 2026ArrivedIdaho FallsDenver-15
Sep 21, 2026ArrivedIdaho FallsDenver-16
Sep 20, 2026ArrivedIdaho FallsDenver-23
Sep 19, 2026ArrivedIdaho FallsDenver-8
Sep 18, 2026ArrivedIdaho FallsDenver144
Sep 17, 2026ArrivedIdaho FallsDenver-27
Sep 16, 2026ArrivedIdaho FallsDenver-18
Sep 15, 2026ArrivedIdaho FallsDenver8
Sep 14, 2026ArrivedIdaho FallsDenver15
Sep 13, 2026ArrivedIdaho FallsDenver28
Sep 12, 2026ArrivedIdaho FallsDenver-30
Sep 11, 2026ArrivedIdaho FallsDenver-8
Sep 10, 2026ArrivedIdaho FallsDenver-6
Sep 9, 2026ArrivedIdaho FallsDenver-21
Sep 8, 2026ArrivedIdaho FallsDenver-17
Sep 7, 2026ArrivedIdaho FallsDenver-18
Sep 6, 2026ArrivedIdaho FallsDenver-19
Sep 5, 2026ArrivedIdaho FallsDenver-28
Sep 4, 2026ArrivedIdaho FallsDenver-25

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