| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Dec 13 | HRL | IAH | 07:17 | 08:14 |
Landed
|
Track > |
| Dec 06 | HRL | IAH | 06:59 | 07:49 |
Landed
|
Track > |
United Airlines Flight UA4021 connects Harlingen, United States to Houston, United States, taking off from Harlingen Valley International Airport HRL and landing at Houston George Bush Intercontinental Airport IAH.
How long is the UA4021 flight from Harlingen to Houston?
The average flight time from Harlingen to Houston is 53 minutes. The flight distance is 475 km / 295 miles and the average flight speed is 535 km/h / 333 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA4021 Harlingen 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 Saturday, December 13th, 2025 with the flight status being Landed on 08:14.
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, 0% of all UA4021 flights are delayed. The average delay is 0 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 3 airlines using the flight numbers AC3238, CM1459, NZ2422
Other flights departing from Harlingen HRL: AA3804, 2I107, UA4297, G66108
Other flights arriving at Houston IAH: UA2491, UA2393, UA1990, UA1799
All flights connecting Harlingen HRL to Houston IAH.