United Airlines UA645 Flight Status
According to Trip.com latest record on status for United Airlines flight UA645 from Denver to Sioux Falls (DEN-FSD): Flights for Oct 22, 2026 are scheduled, with the next departure slated for 17:40 from DEN and an expected arrival at 19:47 at FSD .
Wed, Oct 21
Thu, Oct 22
Fri, Oct 23
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Arrived
The flight arrived 16m early.
1h 40m
Check-in Counter
7,8
Boarding Gate
A16
Arrival Gate
7
Baggage
1
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Scheduled
Your flight will depart on time.
1h 40m
Check-in Counter
7,8
Boarding Gate
B41
Arrival Gate
7
Baggage
1
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United Airlines From TWD 7,168
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Scheduled
Your flight will depart on time.
1h 40m
Check-in Counter
7,8
Boarding Gate
--
Arrival Gate
7
Baggage
1
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Need a flight from Denver to Sioux Falls?
United Airlines From TWD 7,168
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UA1184
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Madison (MSN)
Oklahoma City (OKC)
Oklahoma City (OKC)
Scheduled: 20:05
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UA645 Aircraft Specifications
According to Trip.com real-time data, the UA645 flight from Denver to Sioux Falls on 10/22/2026 is operated using the aircraft model Boeing 737-900. This aircraft has been in service for 13y, 5m. The aircraft has 179 seats.
Boeing 737-900
On-Time Departure
80
%
On-Time Arrival
93
%
Avg. Early
7 minutes
Aircraft Age
13y, 5m
Total Seats
179
Flight Distance
--
Economy
First
Premium Economy
Cabin Amenities
Snacks
On-demand entertainment
Wi-Fi (additional charge)
Power outlet
Seat Information
76 cm
Legroom
--
Seat width
100°
Reclining Angle
3-3
Seat layout example
Cabin Amenities
Snacks
On-demand entertainment
Wi-Fi (additional charge)
Power outlet
Seat Information
94 cm
Legroom
--
Seat width
120°
Reclining Angle
2-2
Seat layout example
Cabin Amenities
None
Live TV
Wi-Fi is available
Power outlet
Seat Information
86 cm
Legroom
44 cm
Seat width better than on 33% of flights
105°
Reclining Angle
3-3
Seat layout example
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UA645 Flight History
Trip.com historical records show that the last UA645 flight departed on Wed, Oct 21 from DEN at approximately 17:57. This flight is expected to arrrive in FSD at 20:04.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sat, Oct 17 | Denver (DEN) | Sioux Falls (FSD) | 739 | 18:29 | 20:37 | Arrived |
| Sun, Oct 18 | Denver (DEN) | Sioux Falls (FSD) | 739 | 18:07 | 20:15 | Arrived |
| Mon, Oct 19 | Denver (DEN) | Sioux Falls (FSD) | 739 | 17:56 | 20:01 | Arrived |
| Tue, Oct 20 | Denver (DEN) | Sioux Falls (FSD) | 739 | 18:02 | 20:07 | Arrived |
| Wed, Oct 21 | Denver (DEN) | Sioux Falls (FSD) | 739 | 17:57 | 20:04 | Arrived |
| Thu, Oct 22 | Denver (DEN) | Sioux Falls (FSD) | 739 | 17:40 | 19:47 | Scheduled |
| Fri, Oct 23 | Denver (DEN) | Sioux Falls (FSD) | 739 | 17:40 | 20:20 | Scheduled |
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UA645 On-Time Performance
Based on the average performance of this flight over the last 30 trips, the on-time departure rate of UA645 is 80% (Late on average 25 minutes), and the on-time arrival rate is 93% (Early on average 7 minutes).
On-Time Departures
Punctuality
80
%
Late on average
25 minutes
Early
0
%
On time
80
%
30 mins late
13
%
60 mins late
7
%
90 mins late
0
%
Cancelled
0
%
On-Time Arrivals
Punctuality
93
%
Early on average
7 minutes
Early
83
%
On time
10
%
30 mins late
7
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
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Flight FAQs
What is the current status of flight ua645?
Flight ua645 has not departed yet and is currently on schedule. Scheduled departure 17:40, arrival 20:20 (updated Oct 22, 2026).Is flight ua645 on time today?
Flight ua645 has not departed yet and is currently on schedule. Scheduled departure is 17:40, with arrival at 20:20. Recheck gate and timing before you head to the airport.Has flight ua645 departed yet? What is the departure time?
Flight ua645 is scheduled to depart at 17:40. The latest actual or estimated departure time is 17:40, and the current status is Scheduled (updated Oct 22, 2026).When is flight ua645 scheduled to arrive?
Flight ua645 is scheduled to arrive at 20:20. The latest estimated or actual arrival time is 19:47. Status is Scheduled as of Oct 22, 2026.What route does flight ua645 fly?
Flight ua645 is operated by United Airlines from Denver (DEN) to Sioux Falls (FSD). Typical flight time is about 1 hour 40 minutes; operating days may include Thursday.How can I check real-time status for flight ua645?
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 flight ua645 is delayed or canceled, what should I do?
If ua645 is delayed or canceled, first confirm the latest status here (Scheduled, updated Oct 22, 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.Has flight ua645 departed from Denver?
Flight ua645 has not departed from Denver (DEN) yet and is currently on schedule for 17:40.What is the seat configuration for flight ua645?
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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When You Land: Sioux Falls Weather & Time Zone
Clear
|
8°C - 23°C
Weather forecast for your arrival day
1 hour time difference
Time on arrival: Denver 18:47
|
Sioux Falls 19:47
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