| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Aug 02 | LAX | SFO | 05:04 | 06:22 |
Delayed
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United Airlines Flight UA3900 connects Los Angeles, United States to San Francisco, United States, taking off from Los Angeles International Airport LAX and landing at San Francisco International Airport SFO.
How long is the UA3900 flight from Los Angeles to San Francisco?
The average flight time from Los Angeles to San Francisco is 1 hour and 18 minutes. The flight distance is 543 km / 338 miles and the average flight speed is 418 km/h / 260 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA3900 Los Angeles to San Francisco?
The Airportia On-Time Performance Rating for United Airlines Flight UA3900 is 3/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA3900 arriving at?
Flight UA3900 arrives at San Francisco International Airport (SFO) Terminal 2.
When was the latest UA3900 flight?
The latest flight took off on Sunday, August 2nd, 2026 with the flight status being En-Route on 06:22.
How else can the flight UA3900 be referenced as?
This United Airlines flight can also be referenced as UAL3900, UA 3900, UAL 3900.
How often is flight UA3900 delayed?
On average, 100% of all UA3900 flights are delayed. The average delay is 121 minutes.
Can I get compensation for my delayed or cancelled UA3900 flight or baggage issues?
If your UA3900 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 UA3900 Flight Tracker above for more details.
Other flights departing from Los Angeles LAX: CM306, 5Y8537, CA3196, KD318
Other flights arriving at San Francisco SFO: UA97, AA446, WN3812, UA2126
All flights connecting Los Angeles LAX to San Francisco SFO.
