| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Dec 17 | DEN | IAD | 14:16 | 19:00 |
Landed
|
Track > |
| Dec 16 | DEN | IAD | 13:56 | 18:45 |
Landed
|
Track > |
| Dec 15 | DEN | IAD | 14:04 | 18:58 |
Landed
|
Track > |
| Dec 14 | DEN | IAD | 14:13 | 19:04 |
Landed
|
Track > |
| Dec 13 | DEN | IAD | 14:05 | 18:44 |
Landed
|
Track > |
| Dec 12 | DEN | IAD | 14:00 | 18:40 |
Landed
|
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| Dec 11 | DEN | IAD | 14:59 | 19:35 |
Landed Late
|
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| Dec 10 | DEN | IAD | 14:05 | 18:53 |
Landed
|
Track > |
| Dec 09 | DEN | IAD | 14:09 | 18:49 |
Landed
|
Track > |
| Dec 08 | DEN | IAD | 14:17 | 19:02 |
Landed
|
Track > |
United Airlines Flight UA400 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 UA400 flight from Denver to Washington?
The average flight time from Denver to Washington is 2 hours and 44 minutes. The flight distance is 2331 km / 1449 miles and the average flight speed is 851 km/h / 529 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA400 Denver to Washington?
The Airportia On-Time Performance Rating for United Airlines Flight UA400 is 5/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA400 flight?
The latest flight took off on Thursday, December 18th, 2025 with the flight status being Landed on 19:00.
How else can the flight UA400 be referenced as?
This United Airlines flight can also be referenced as UAL400, UA0400, UA 400, UAL 400.
How often is flight UA400 delayed?
On average, 10% of all UA400 flights are delayed. The average delay is 27 minutes.
Can I get compensation for my delayed or cancelled UA400 flight or baggage issues?
If your UA400 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 UA400 Flight Tracker above for more details.
Flight UA400 is code-shared by 2 airlines using the flight numbers CM2868, ET1365
Other flights departing from Denver DEN: UA1476, WN4069, UA445, UA330
Other flights arriving at Washington IAD: UA2027, DL1687, DL5029, UA3928
All flights connecting Denver DEN to Washington IAD.
