| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Dec 18 | CLE | IAH | 06:20 | 07:59 |
Landed
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| Dec 17 | CLE | IAH | 18:38 | 20:19 |
Landed
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| Dec 16 | CLE | IAH | 19:10 | 20:48 |
Landed
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| Dec 15 | CLE | IAH | 18:28 | 19:56 |
Landed
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| Dec 14 | CLE | IAH | 19:17 | 20:45 |
Landed
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| Dec 12 | CLE | IAH | 18:26 | 19:58 |
Landed
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| Dec 11 | CLE | IAH | 18:59 | 20:33 |
Landed
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| Dec 10 | CLE | IAH | 19:24 | 20:55 |
Landed
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| Dec 09 | CLE | IAH | 18:33 | 20:00 |
Landed
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| Dec 08 | CLE | IAH | 18:27 | 20:15 |
Landed
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United Airlines Flight UA4021 connects Cleveland, United States to Houston, United States, taking off from Cleveland Hopkins International Airport CLE and landing at Houston George Bush Intercontinental Airport IAH.
How long is the UA4021 flight from Cleveland to Houston?
The average flight time from Cleveland to Houston is 2 hours and 34 minutes. The flight distance is 1756 km / 1091 miles and the average flight speed is 683 km/h / 424 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA4021 Cleveland to Houston?
The Airportia On-Time Performance Rating for United Airlines Flight UA4021 is 5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA4021 arriving at?
Flight UA4021 arrives at Houston George Bush Intercontinental Airport (IAH) Terminal B.
When was the latest UA4021 flight?
The latest flight took off on Thursday, December 18th, 2025 with the flight status being Landed on 07:59.
How else can the flight UA4021 be referenced as?
This United Airlines flight can also be referenced as UAL4021, UA 4021, UAL 4021.
How often is flight UA4021 delayed?
On average, 10% of all UA4021 flights are delayed. The average delay is 5 minutes.
Can I get compensation for my delayed or cancelled UA4021 flight or baggage issues?
If your UA4021 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 UA4021 Flight Tracker above for more details.
Flight UA4021 is code-shared by 1 airline using the flight number NZ6421
Other flights departing from Cleveland CLE: DL8838, DL5778, DL4839, WN4277
Other flights arriving at Houston IAH: DL1753, UA1429, AA3351, UA662
All flights connecting Cleveland CLE to Houston IAH.