| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 18 | DEN | IAD | 15:55 | 21:02 |
Landed
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Track > |
| Jul 17 | DEN | IAD | 15:58 | 21:06 |
Landed
|
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| Jul 16 | DEN | IAD | 16:08 | 21:09 |
Landed
|
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| Jul 15 | DEN | IAD | 15:50 | 20:55 |
Landed
|
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| Jul 14 | DEN | IAD | 16:15 | 21:19 |
Landed
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| Jul 13 | DEN | IAD | 16:24 | 21:28 |
Landed Late
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| Jul 12 | DEN | IAD | 15:55 | 20:50 |
Landed
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| Jul 11 | DEN | IAD | 16:13 | 21:13 |
Landed
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| Jul 10 | DEN | IAD | 15:55 | 20:46 |
Landed
|
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| Jul 09 | DEN | IAD | 16:57 | 22:09 |
Delayed
|
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United Airlines Flight UA421 connects Denver, United States to Washington, United States, taking off from Denver International Airport DEN and landing at Washington Dulles International Airport IAD.
How long is the UA421 flight from Denver to Washington?
The average flight time from Denver to Washington is 3 hours and 2 minutes. The flight distance is 2331 km / 1449 miles and the average flight speed is 766 km/h / 476 mph.
How many UA421 flights are operated per week?
6 flights per week. The flight UA421 is operated on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday.
What is the On-Time Performance (OTP) of United Airlines Flight UA421 Denver to Washington?
The Airportia On-Time Performance Rating for United Airlines Flight UA421 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA421 flight?
The latest flight took off on Sunday, July 19th, 2026 with the flight status being Landed on 21:02.
How else can the flight UA421 be referenced as?
This United Airlines flight can also be referenced as UAL421, UA0421, UA 421, UAL 421.
How often is flight UA421 delayed?
On average, 40% of all UA421 flights are delayed. The average delay is 21 minutes.
Can I get compensation for my delayed or cancelled UA421 flight or baggage issues?
If your UA421 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our UA421 Flight Tracker above for more details.
Flight UA421 is code-shared by 1 airline using the flight number CM2871
Other flights departing from Denver DEN: WN120, UA2232, OO5103, UA5103
Other flights arriving at Washington IAD: F93208, UA4810, UA4587, UA4291
All flights connecting Denver DEN to Washington IAD.