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United Airlines United Airlines

UA645 Flight Status

According to Trip.com real-time data, the UA645 flight operated by United Airlines on Nov 11, 2026 is scheduled to fly from Denver (DEN) to Sioux Falls (FSD). The flight is expected to depart at 5:25 PM (local time in Denver, UTC-7) and land at 7:32 PM (local time in Sioux Falls, UTC-6) .
Tue, Nov 10
Wed, Nov 11
Thu, Nov 12
DEN-FSD

Access more flight status info on the Trip.com app

Arrived
The flight has arrived 26m early
Denver(DEN)
5:34 PM
Scheduled: 5:25 PM, Nov 10
Denver International Airport
173106C5-5199-4134-A176-6296CB3DA377 1h 39m
Sioux Falls(FSD)
7:38 PM
Scheduled: 8:04 PM, Nov 10
Sioux Falls Regional Airport
Check-in Counter
7,8
Boarding Gate
B9
Arrival Gate
6
Baggage
1
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DEN-FSD

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Scheduled
Your flight will depart on time.
Denver(DEN)
5:25 PM
Scheduled: 5:25 PM, Nov 11
Denver International Airport
173106C5-5199-4134-A176-6296CB3DA377 1h 39m
Sioux Falls(FSD)
7:32 PM
Scheduled: 8:04 PM, Nov 11
Sioux Falls Regional Airport
Check-in Counter
7,8
Boarding Gate
A36
Arrival Gate
7
Baggage
1
Show more
Need a flight from Denver to Sioux Falls?
United Airlines From INR 22,527
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DEN-FSD

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Scheduled
Your flight will depart on time.
Denver(DEN)
5:25 PM
Scheduled: 5:25 PM, Nov 12
Denver International Airport
173106C5-5199-4134-A176-6296CB3DA377 1h 39m
Sioux Falls(FSD)
8:04 PM
Scheduled: 8:04 PM, Nov 12
Sioux Falls Regional Airport
Check-in Counter
7,8
Boarding Gate
--
Arrival Gate
7
Baggage
1
Show more
Need a flight from Denver to Sioux Falls?
United Airlines From INR 22,527
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Information provided by VariFlight For real-time updates, please check airport displays or contact your airline. You can also explore more flights from Denver to Sioux Falls or track other flights with our flight status tracker.

Track the Previous Flight Status: Scheduled

UA1126
|
Washington D.C. (WAS) Denver (DEN)
Scheduled: 4:13 PM
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UA645 Aircraft Details

According to Trip.com real-time data, the UA645 flight flying from Denver to Sioux Falls on 11/11/2026 is operated by the aircraft model Boeing 737-900. This aircraft has been in service for 11y, 10m. The aircraft is equipped with 179 seats.
flight status
Boeing 737-900
Punctuality (Departure)
93 %
Punctuality (Arrival)
93 %
Early on average
11 minutes
Age
11y, 10m
Seats
179
Flight Distance
--

Flight History for UA645

Trip.com historical records show that the last UA645 flight departed on Tue, Nov 10 from DEN at approximately 5:34 PM. This flight is expected to arrrive in FSD at 7:38 PM.
Date Airport Aircraft Model Departure Arrival Status
Departure Arrival
Fri, Nov 6 Denver (DEN) Sioux Falls (FSD) 739 5:43 PM 7:50 PM Arrived
Sat, Nov 7 Denver (DEN) Sioux Falls (FSD) 739 5:45 PM 7:56 PM Arrived
Sun, Nov 8 Denver (DEN) Sioux Falls (FSD) 739 5:43 PM 7:55 PM Arrived
Mon, Nov 9 Denver (DEN) Sioux Falls (FSD) 739 5:47 PM 7:51 PM Arrived
Tue, Nov 10 Denver (DEN) Sioux Falls (FSD) 739 5:34 PM 7:38 PM Arrived
Wed, Nov 11 Denver (DEN) Sioux Falls (FSD) 739 5:25 PM 7:32 PM Scheduled
Thu, Nov 12 Denver (DEN) Sioux Falls (FSD) 739 5:25 PM 8:04 PM Scheduled

UA645 On-Time Performance

Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA645 is 93% (Late on average 21 minutes), and the on-time arrival rate is 93% (Early on average 11 minutes).

On-Time Departures
Punctuality
93 %
Late on average 21 minutes
Early
0 %
On time
93 %
30 mins late
0 %
60 mins late
3 %
90 mins late
3 %
Canceled
1 %
On-Time Arrivals
Punctuality
93 %
Early on average 11 minutes
Early
93 %
On time
0 %
30 mins late
3 %
60 mins late
3 %
90 mins late
0 %
Canceled
1 %

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Frequently Asked Questions

  • What is the current status of flight ua645?

    Flight ua645 has not departed yet and is currently on schedule. Scheduled departure 5:25 PM, arrival 8:04 PM (updated Nov 11, 2026).
  • Flight ua645 has not departed yet and is currently on schedule. Scheduled departure is 5:25 PM, with arrival at 8:04 PM. Recheck gate and timing before you head to the airport.
  • Flight ua645 is scheduled to depart at 5:25 PM. The latest actual or estimated departure time is 5:25 PM, and the current status is Scheduled (updated Nov 11, 2026).
  • Flight ua645 is scheduled to arrive at 8:04 PM. The latest estimated or actual arrival time is 7:32 PM. Status is Scheduled as of Nov 11, 2026.
  • Flight ua645 is operated by United Airlines from Denver (DEN) to Sioux Falls (FSD). Typical flight time is about 1 hour39 minutes; operating days may include Wednesday.
  • Track flight ua645 on this Trip.com status page for live departure, arrival, gate and baggage updates. For push alerts on the go, open the same flight in the Trip.com App and turn on flight notifications.
  • If ua645 is delayed or canceled, first confirm the latest status here (Scheduled, updated Nov 11, 2026). Contact United Airlines or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com.
  • Flight ua645 has not departed from Denver (DEN) yet and is currently on schedule for 5:25 PM.
  • Flight ua645 usually flies a Boeing 737-900 with seat layout 3-3. Layouts can differ by aircraft subtype and cabin product—confirm your seat map in Manage Booking after you purchase.

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Arrival Info: Sioux Falls Weather & Current Time

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Mostly cloudy
|
4°C - 17°C
Weather forecast for your arrival day
timeDifferenceIcon
1 hour time difference
Time on arrival: Denver 18:32 | Sioux Falls 19:32

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