| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Aug 10 | BOS | LAX | 19:13 | 21:42 |
Landed
|
Track > |
| Aug 09 | BOS | LAX | 19:21 | 21:48 |
Landed
|
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| Aug 08 | BOS | LAX | 20:17 | 22:42 |
Landed Late
|
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| Aug 07 | BOS | LAX | 19:16 | 21:54 |
Landed
|
Track > |
| Aug 06 | BOS | LAX | 19:21 | 21:55 |
Landed
|
Track > |
| Aug 05 | BOS | LAX | 19:03 | 21:53 |
Landed
|
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| Aug 04 | BOS | LAX | 19:19 | 21:51 |
Landed
|
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| Aug 03 | BOS | LAX | 22:02 | 00:23 |
Delayed
|
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| Aug 02 | BOS | LAX | 20:57 | 23:17 |
Delayed
|
Track > |
| Aug 01 | BOS | LAX | 18:53 | 21:11 |
Landed
|
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 29 minutes. The flight distance is 4193 km / 2605 miles and the average flight speed is 764 km/h / 475 mph.
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 4.5/5 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 8.
When was the latest UA639 flight?
The latest flight took off on Tuesday, August 11th, 2026 with the flight status being Landed on 21:42.
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, 60% of all UA639 flights are delayed. The average delay is 47 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: DL5718, DL5716, DL1957, AA4634
Other flights arriving at Los Angeles LAX: CA1051, UA1546, UA2095, OO5636
All flights connecting Boston BOS to Los Angeles LAX.
