United Airlines UA2100 Flight Status
According to Trip.com real-time data, the UA2100 flight operated by United Airlines on Sep 20, 2026, scheduled to fly from St. Louis (STL) to Kalispell (FCA), has experienced a change in flight status: the originally scheduled departure time has been delayed, and the new departure time is 10:09 , with a new arrival time of 15:21 (local time in Kalispell, UTC-6) . Trip.com will continue to keep you updated on the latest flight status.
Sat, Sep 19
Sun, Sep 20
Mon, Sep 21
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Arrived
The flight has arrived 19m late
2h 21m
Check-in Counter
33-48
Boarding Gate
D7
Arrival Gate
1
Baggage
3
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Delayed
Your flight is about 1h 33m late
7h 45m
SFO
3m
Check-in Counter
--
Boarding Gate
A19
Arrival Gate
--
Baggage
--
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Scheduled
Your flight will depart on time.
7h 39m
SFO
56m
Check-in Counter
--
Boarding Gate
A19
Arrival Gate
--
Baggage
--
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Information provided by VariFlight. Please refer to airport announcements for the most up-to-date information.
Track the Previous Flight Status: Delayed (may impact connections)
UA1422
|
Denver (DEN) 
St. Louis (STL)
St. Louis (STL)Scheduled: 20:38
|
1h 39m late
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UA2100 Aircraft Details
According to Trip.com real-time data, the UA2100 flight flying from St. Louis to Kalispell on 9/20/2026 is operated by the aircraft model Boeing 737-800. This aircraft has been in service for 28y, 1m. The aircraft is equipped with 166 seats.
Boeing 737-800
Punctuality (Departure)
38%
Punctuality (Arrival)
75%
Late on average
17 minutes
Age
28y, 1m
Seats
166
Flight Distance
--
Economy
First
Premium Economy
In-Flight Services
None
Live TV
Wi-Fi is available
No power outlets are available
Seat Information
76 cm
Legroom
--
Seat width
100°
Reclining Angle
3-3
Seat layout example
In-Flight Services
Meal included
Live TV
Wi-Fi is available
Power outlet
Seat Information
94 cm
Legroom
53 cm
Seat width better than on 67% of flights
120°
Reclining Angle
2-2
Seat layout example
In-Flight Services
Meal included
Live TV
Wi-Fi is available
Power outlet
Seat Information
86 cm
Legroom
--
Seat width
100°
Reclining Angle
3-3
Seat layout example
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Recent Flight History for UA2100
Trip.com historical records show that the last UA2100 flight departed on Sat, Sep 19 from STL at approximately 12:48. This flight is expected to arrrive in FCA at 15:40.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Tue, Sep 15 | San Francisco (SFO) | Kalispell (FCA) | 320 | 12:23 | 15:04 | Arrived |
| Wed, Sep 16 | St. Louis (STL) | Kalispell (FCA) | 319 | 10:08 | 15:07 | Arrived |
| Thu, Sep 17 | St. Louis (STL) | Kalispell (FCA) | 320 | 09:39 | 15:57 | Arrived |
| Fri, Sep 18 | St. Louis (STL) | Kalispell (FCA) | 320 | 11:48 | 17:01 | Arrived |
| Sat, Sep 19 | San Francisco (SFO) | Kalispell (FCA) | 320 | 12:48 | 15:40 | Arrived |
| Sun, Sep 20 | St. Louis (STL) | Kalispell (FCA) | 738 | 10:09 | 15:21 | Delayed |
| Mon, Sep 21 | St. Louis (STL) | Kalispell (FCA) | 319 | 08:42 | 15:21 | Scheduled |
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UA2100 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA2100 is 38% (Late on average 1 hour 4 minutes), and the on-time arrival rate is 75% (Late on average 17 minutes).
On-Time Departures
Punctuality
38%
Late on average 1 hour 4 minutes
Early
0%
On time
38%
30 mins late
25%
60 mins late
13%
90 mins late
25%
Cancelled
0%
On-Time Arrivals
Punctuality
75%
Late on average 17 minutes
Early
38%
On time
38%
30 mins late
13%
60 mins late
0%
90 mins late
13%
Cancelled
0%
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Frequently Asked Questions
What is the current status of flight ua2100?
Flight ua2100 is delayed by about 93 minutes (status: Delayed). Latest estimated departure/arrival: 10:09 / 15:21 (updated Sep 20, 2026).Is flight ua2100 on time today?
Flight ua2100 is delayed by about 93 minutes (status: Delayed). The latest estimated departure/arrival times are 10:09 / 15:21. Watch for gate changes.Has flight ua2100 departed yet? What is the departure time?
Flight ua2100 is scheduled to depart at 08:36. The latest actual or estimated departure time is 10:09, and the current status is Delayed (updated Sep 20, 2026).When is flight ua2100 scheduled to arrive?
Flight ua2100 is scheduled to arrive at 15:21. The latest estimated or actual arrival time is 15:21. Status is Delayed as of Sep 20, 2026.What is the gate information for flight ua2100?
For flight ua2100, the departure terminal is T1 and the boarding gate is A19. Gate assignments can change at short notice—confirm on airport screens before heading to security.What route does flight ua2100 fly?
Flight ua2100 is operated by United Airlines from St. Louis (STL) to Kalispell (FCA). Typical flight time is about 7 hours 45 minutes; operating days may include Sunday.How can I check real-time status for flight ua2100?
Track flight ua2100 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 ua2100 is delayed or canceled, what should I do?
If ua2100 is delayed or canceled, first confirm the latest status here (Delayed, updated Sep 20, 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 ua2100 departed from St. Louis?
Flight ua2100 has not left St. Louis (STL) yet and is delayed by about 93 minutes. Latest estimated departure: 10:09.What is the seat configuration for flight ua2100?
Flight ua2100 usually flies a Boeing 737-800 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: Kalispell Weather & Current Time
Partly cloudy with showers
|
6°C - 24°C
Weather forecast for your arrival day
-1 hour time difference
Time on arrival: St. Louis 16:21| Kalispell 15:21
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