United Airlines
UA421 Flight Status
Based on Trip.com’s real-time data, the UA421 flight operated by United Airlines on Oct 4, 2026 is scheduled to fly from Denver (DEN) to Chicago (ORD). The flight is expected to depart at 15:45 (local time in Denver, UTC-6) and land at 23:43 (local time in Chicago, UTC-5) .
Sat, Oct 3
Sun, Oct 4
Mon, Oct 5
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Arrived
The flight has arrived 20m early
6h 46m
IAD
1h 1m
Check-in Counter
7,8
Boarding Gate
B23
Arrival Gate
C9
Baggage
3
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Scheduled
Your flight will depart on time.
6h 58m
IAD
1h 52m
Check-in Counter
7,8
Boarding Gate
B27
Arrival Gate
B11
Baggage
3
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Scheduled
Your flight will depart on time.
6h 47m
IAD
1h 7m
Check-in Counter
7,8
Boarding Gate
--
Arrival Gate
--
Baggage
3
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Information provided by VariFlight
For the latest updates, please refer to airport announcements or consult your airline.
You can also explore more flights from Denver to Chicago or track other flights with our flight status tracker.
UA421 Aircraft Details
According to Trip.com real-time data, the UA421 flight flying from Denver to Chicago on 10/4/2026 is operated by the aircraft model Airbus A321neo. This aircraft has been in service for 1y, 11m. The aircraft is equipped with 200 seats.
Airbus A321neo
Punctuality (Departure)
80
%
Punctuality (Arrival)
83
%
Late on average
4 minutes
Age
1y, 11m
Seats
200
Distance
--
Economy
First
Premium Economy
Onboard Amenities
None
Unknown
Wi-Fi is available
USB port and power outlet
Seating Plan
76 cm
More legroom than on 4% of flights
47 cm
Seat width better than on 69% of flights
100°
Reclining Angle
--
Seat layout example
Onboard Amenities
Meal included
Unknown
Wi-Fi is available
USB port and power outlet
Seating Plan
94 cm
More legroom than on 2% of flights
53 cm
Seat width better than on 51% of flights
120°
Reclining Angle
--
Seat layout example
Onboard Amenities
Meal included
Unknown
Wi-Fi is available
USB port and power outlet
Seating Plan
84 cm
Legroom
47 cm
Seat width better than on 67% of flights
110°
Reclining Angle
--
Seat layout example
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Flight History for UA421
Trip.com historical records show that the last UA421 flight departed on Sat, Oct 3 from DEN at approximately 16:24. This flight is expected to arrrive in ORD at 23:11.
| Date | Airport | Aircraft Type | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Tue, Sep 29 | Denver (DEN) | Chicago (ORD) | A21N | 15:57 | 23:39 | Arrived |
| Wed, Sep 30 | Denver (DEN) | Chicago (ORD) | A21N | 15:57 | 23:05 | Arrived |
| Thu, Oct 1 | San Jose (SJC) | Chicago (ORD) | A21N | 11:04 | 01:39 | Arrived |
| Fri, Oct 2 | Denver (DEN) | Chicago (ORD) | A21N | 16:01 | 23:19 | Arrived |
| Sat, Oct 3 | Denver (DEN) | Chicago (ORD) | A21N | 16:24 | 23:11 | Arrived |
| Sun, Oct 4 | Denver (DEN) | Chicago (ORD) | A21N | 15:45 | 23:43 | Scheduled |
| Mon, Oct 5 | Denver (DEN) | Chicago (ORD) | A21N | 15:45 | 23:32 | Scheduled |
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UA421 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA421 is 80% (Late on average 26 minutes), and the on-time arrival rate is 83% (Late on average 4 minutes).
On-Time Departures
Punctuality
80
%
Late on average
26 minutes
Early
0
%
On time
80
%
30 mins late
10
%
60 mins late
7
%
90 mins late
3
%
Cancelled
0
%
On-Time Arrivals
Punctuality
83
%
Late on average
4 minutes
Early
70
%
On time
13
%
30 mins late
7
%
60 mins late
3
%
90 mins late
7
%
Cancelled
0
%
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Frequently Asked Questions
-
What is the current status of flight ua421?
Flight ua421 has not departed yet and is currently on schedule. Scheduled departure 15:45, arrival 23:43 (updated Oct 4, 2026). -
Is flight ua421 on time today?
Flight ua421 has not departed yet and is currently on schedule. Scheduled departure is 15:45, with arrival at 23:43. Recheck gate and timing before you head to the airport. -
Has flight ua421 departed yet? What is the departure time?
Flight ua421 is scheduled to depart at 15:45. The latest actual or estimated departure time is 15:45, and the current status is Scheduled (updated Oct 4, 2026). -
When is flight ua421 scheduled to arrive?
Flight ua421 is scheduled to arrive at 23:43. The latest estimated or actual arrival time is 23:43. Status is Scheduled as of Oct 4, 2026. -
What is the baggage carousel number for flight ua421?
After arrival, baggage for flight ua421 is expected at carousel 3 in terminal T1. Carousel numbers are assigned close to landing and may change—follow airport signs on arrival. -
What route does flight ua421 fly?
Flight ua421 is operated by United Airlines from Denver (DEN) to Chicago (ORD). Typical flight time is about 6 hours58 minutes; operating days may include Sunday. -
How can I check real-time status for flight ua421?
Track flight ua421 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 ua421 is delayed or canceled, what should I do?
If ua421 is delayed or canceled, first confirm the latest status here (Scheduled, updated Oct 4, 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 ua421 departed from Denver?
Flight ua421 has not departed from Denver (DEN) yet and is currently on schedule for 15:45.
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Destination Info: Chicago Weather & Time
Clear
|
13°C - 21°C
Expected weather conditions upon arrival
1 hour time difference
Time on arrival: Denver 22:32
|
Chicago 23:32
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