| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Apr 29 | IAD | DEN | 08:33 | 10:19 |
Landed
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Track > |
| Apr 28 | IAD | DEN | 08:57 | 10:35 |
Landed
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| Apr 27 | IAD | DEN | 08:40 | 10:27 |
Landed
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| Apr 26 | IAD | DEN | 08:38 | 09:54 |
Landed
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| Apr 25 | IAD | DEN | 08:37 | 10:04 |
Landed
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| Apr 24 | IAD | DEN | 08:36 | 10:05 |
Landed
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| Apr 23 | IAD | DEN | 10:16 | 11:25 |
Delayed
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| Apr 22 | IAD | DEN | 08:44 | 10:02 |
Landed
|
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| Apr 21 | IAD | DEN | 08:41 | 10:06 |
Landed
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| Apr 20 | IAD | DEN | 08:48 | 10:18 |
Landed
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United Airlines Flight UA1256 connects Washington, United States to Denver, United States, taking off from Washington Dulles International Airport IAD and landing at Denver International Airport DEN.
How long is the UA1256 flight from Washington to Denver?
The average flight time from Washington to Denver is 3 hours and 28 minutes. The flight distance is 2331 km / 1449 miles and the average flight speed is 673 km/h / 418 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA1256 Washington to Denver?
The Airportia On-Time Performance Rating for United Airlines Flight UA1256 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA1256 arriving at?
Flight UA1256 arrives at Denver International Airport (DEN) Terminal E.
When was the latest UA1256 flight?
The latest flight took off on Wednesday, April 29th, 2026 with the flight status being Landed on 10:19.
How else can the flight UA1256 be referenced as?
This United Airlines flight can also be referenced as UAL1256, UA 1256, UAL 1256.
How often is flight UA1256 delayed?
On average, 20% of all UA1256 flights are delayed. The average delay is 30 minutes.
Can I get compensation for my delayed or cancelled UA1256 flight or baggage issues?
If your UA1256 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 UA1256 Flight Tracker above for more details.
Flight UA1256 is code-shared by 1 airline using the flight number CM2857
Other flights departing from Washington IAD: UA6232, UA4877, UA4248, UA4880
Other flights arriving at Denver DEN: UA2336, UA282, UA1415, CW5051
All flights connecting Washington IAD to Denver DEN.