| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 02 | LHR | SFO | 16:15 | 19:10 |
Delayed
|
Track > |
| Jul 01 | LHR | SFO | 16:42 | 18:48 |
Landed
|
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| Jun 30 | LHR | SFO | 17:00 | 18:57 |
Landed
|
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| Jun 29 | LHR | SFO | 16:54 | 18:43 |
Landed
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| Jun 28 | LHR | SFO | 16:45 | 18:34 |
Landed
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| Jun 27 | LHR | SFO | 16:53 | 19:01 |
Landed
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| Jun 26 | LHR | SFO | 16:59 | 19:18 |
Landed
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| Jun 25 | LHR | SFO | 16:51 | 18:55 |
Landed
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| Jun 24 | LHR | SFO | 18:16 | 20:07 |
Delayed
|
Track > |
| Jun 23 | LHR | SFO | 17:53 | 20:08 |
Delayed
|
Track > |
United Airlines Flight UA939 connects London, United Kingdom to San Francisco, United States, taking off from London Heathrow Airport LHR and landing at San Francisco International Airport SFO.
How long is the UA939 flight from London to San Francisco?
The average flight time from London to San Francisco is 10 hours and 2 minutes. The flight distance is 8615 km / 5353 miles and the average flight speed is 852 km/h / 529 mph.
How many UA939 flights are operated per week?
7 flights per week. The flight UA939 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of United Airlines Flight UA939 London to San Francisco?
The Airportia On-Time Performance Rating for United Airlines Flight UA939 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA939 arriving at?
Flight UA939 arrives at San Francisco International Airport (SFO) Terminal I.
When was the latest UA939 flight?
The latest flight took off on Friday, July 3rd, 2026 with the flight status being Scheduled on 19:10.
How else can the flight UA939 be referenced as?
This United Airlines flight can also be referenced as UAL939, UA0939, UA 939, UAL 939.
How often is flight UA939 delayed?
On average, 30% of all UA939 flights are delayed. The average delay is 41 minutes.
Can I get compensation for my delayed or cancelled UA939 flight or baggage issues?
If your UA939 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 UA939 Flight Tracker above for more details.
Other flights departing from London LHR: BA532, LM656, SV122, BA334
Other flights arriving at San Francisco SFO: UA810, LH458, UA673, DL679
All flights connecting London LHR to San Francisco SFO.
