| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| May 17 | ONT | LAX | 23:18 | 21:55 |
Unknown
|
Track > |
United Airlines Flight UA639 connects Ontario, United States to Los Angeles, United States, taking off from Ontario International Airport ONT and landing at Los Angeles International Airport LAX.
What is the On-Time Performance (OTP) of United Airlines Flight UA639 Ontario to Los Angeles?
The Airportia On-Time Performance Rating for United Airlines Flight UA639 is 5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA639 arriving at?
Flight UA639 arrives at Los Angeles International Airport (LAX) Terminal 7.
When was the latest UA639 flight?
The latest flight took off on Monday, May 18th, 2026 with the flight status being Unknown on 21:55.
How else can the flight UA639 be referenced as?
This United Airlines flight can also be referenced as UAL639, UA0639, UA 639, UAL 639.
How often is flight UA639 delayed?
On average, 0% of all UA639 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled UA639 flight or baggage issues?
If your UA639 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 UA639 Flight Tracker above for more details.
Flight UA639 is code-shared by 3 airlines using the flight numbers AZ4381, NZ9450, VA8303
Other flights departing from Ontario ONT: WN3653, WN626, WN257, 8C3349
Other flights arriving at Los Angeles LAX: AF28, DL319, UA424, WN508
All flights connecting Ontario ONT to Los Angeles LAX.