| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 18 | BOS | LAX | 20:14 | 22:32 |
Landed Late
|
Track > |
| Jul 17 | BOS | LAX | 19:25 | 21:41 |
Landed
|
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| Jul 16 | BOS | LAX | 19:03 | 21:29 |
Landed
|
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| Jul 15 | BOS | LAX | 18:59 | 21:30 |
Landed
|
Track > |
| Jul 14 | BOS | LAX | 19:07 | 21:20 |
Landed
|
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| Jul 13 | BOS | LAX | 18:58 | 21:02 |
Landed
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| Jul 12 | BOS | LAX | 20:19 | 22:28 |
Landed Late
|
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| Jul 11 | BOS | LAX | 19:38 | 21:52 |
Landed
|
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| Jul 10 | BOS | LAX | 20:30 | 23:02 |
Delayed
|
Track > |
| Jul 09 | BOS | LAX | 20:37 | 23:32 |
Delayed
|
Track > |
United Airlines Flight UA639 connects Boston, United States to Los Angeles, United States, taking off from Boston Logan International Airport BOS and landing at Los Angeles International Airport LAX.
How long is the UA639 flight from Boston to Los Angeles?
The average flight time from Boston to Los Angeles is 5 hours and 21 minutes. The flight distance is 4193 km / 2605 miles and the average flight speed is 783 km/h / 487 mph.
How many UA639 flights are operated per week?
6 flights per week. The flight UA639 is operated on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday.
What is the On-Time Performance (OTP) of United Airlines Flight UA639 Boston to Los Angeles?
The Airportia On-Time Performance Rating for United Airlines Flight UA639 is 4.6/5 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 Sunday, July 19th, 2026 with the flight status being Landed on 22:32.
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, 50% of all UA639 flights are delayed. The average delay is 48 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 4 airlines using the flight numbers AZ4381, NZ9450, OZ6283, VA8303
Other flights departing from Boston BOS: B62459, PB7668, AA4692, EI134
Other flights arriving at Los Angeles LAX: AF26, MU7309, AA266, DL450
All flights connecting Boston BOS to Los Angeles LAX.
