| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Feb 11 | IAH | DEN | 20:35 | 21:40 |
Landed
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| Feb 10 | IAH | DEN | 20:50 | 21:49 |
Landed
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| Feb 09 | IAH | DEN | 20:37 | 21:36 |
Landed
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| Feb 08 | IAH | DEN | 20:38 | 21:42 |
Landed
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| Feb 07 | IAH | DEN | 20:44 | 21:43 |
Landed
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| Feb 06 | IAH | DEN | 20:32 | 21:30 |
Landed
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| Feb 05 | IAH | DEN | 20:35 | 21:37 |
Landed
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| Feb 04 | IAH | DEN | 20:57 | 22:03 |
Landed
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| Feb 03 | IAH | DEN | 21:55 | 22:56 |
Delayed
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| Feb 02 | IAH | DEN | 20:32 | 21:37 |
Landed
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United Airlines Flight UA1239 connects Houston, United States to Denver, United States, taking off from Houston George Bush Intercontinental Airport IAH and landing at Denver International Airport DEN.
How long is the UA1239 flight from Houston to Denver?
The average flight time from Houston to Denver is 2 hours and 1 minute. The flight distance is 1387 km / 862 miles and the average flight speed is 684 km/h / 425 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA1239 Houston to Denver?
The Airportia On-Time Performance Rating for United Airlines Flight UA1239 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA1239 flight?
The latest flight took off on Thursday, February 12th, 2026 with the flight status being Landed on 21:40.
How else can the flight UA1239 be referenced as?
This United Airlines flight can also be referenced as UAL1239, UA 1239, UAL 1239.
How often is flight UA1239 delayed?
On average, 10% of all UA1239 flights are delayed. The average delay is 50 minutes.
Can I get compensation for my delayed or cancelled UA1239 flight or baggage issues?
If your UA1239 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 UA1239 Flight Tracker above for more details.
Flight UA1239 is code-shared by 3 airlines using the flight numbers AC5411, EK6102, NZ6499
Other flights departing from Houston IAH: UA4072, UA510, UA4229, UA565
Other flights arriving at Denver DEN: AA2372, UA547, AA3540, WN1803
All flights connecting Houston IAH to Denver DEN.