| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Sep 24 | TUS | DEN | 16:15 | 18:45 |
Landed
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Track > |
| Sep 23 | TUS | DEN | 16:20 | 18:51 |
Landed
|
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| Sep 22 | TUS | DEN | 17:34 | 20:02 |
Landed Late
|
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| Sep 21 | TUS | DEN | 16:18 | 18:44 |
Landed
|
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| Sep 20 | TUS | DEN | 16:16 | 18:41 |
Landed
|
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| Sep 19 | TUS | DEN | 17:02 | 19:24 |
Landed
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| Sep 18 | TUS | DEN | 16:22 | 18:55 |
Landed
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| Sep 17 | TUS | DEN | 16:15 | 19:15 |
Landed
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| Sep 16 | TUS | DEN | 17:42 | 20:08 |
Landed Late
|
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| Sep 15 | TUS | DEN | 16:14 | 18:39 |
Landed
|
Track > |
United Airlines Flight UA400 connects Tucson, United States to Denver, United States, taking off from Tucson International Airport TUS and landing at Denver International Airport DEN.
How long is the UA400 flight from Tucson to Denver?
The average flight time from Tucson to Denver is 1 hour and 30 minutes. The flight distance is 1029 km / 639 miles and the average flight speed is 688 km/h / 428 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA400 Tucson to Denver?
The Airportia On-Time Performance Rating for United Airlines Flight UA400 is 4.8/5 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, September 25th, 2025 with the flight status being Landed on 18:45.
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, 30% of all UA400 flights are delayed. The average delay is 36 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 1 airline using the flight number AC4083
Other flights departing from Tucson TUS: AA6295, WN3979, AA6494, WN424
Other flights arriving at Denver DEN: WN3729, WN1912, WN1123, OO5052
All flights connecting Tucson TUS to Denver DEN.
