| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jun 24 | BOS | SFO | 17:28 | 20:46 |
Delayed
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| Jun 23 | BOS | SFO | 17:10 | 20:10 |
Landed Late
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| Jun 22 | BOS | SFO | 17:22 | 20:28 |
Landed Late
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| Jun 21 | BOS | SFO | 17:43 | 20:43 |
Delayed
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| Jun 20 | BOS | SFO | 17:00 | 20:17 |
Landed Late
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| Jun 19 | BOS | SFO | 17:26 | 20:35 |
Delayed
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| Jun 18 | BOS | SFO | 18:48 | 21:52 |
Delayed
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| Jun 17 | BOS | SFO | 16:42 | 20:03 |
Landed
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| Jun 16 | BOS | SFO | 17:56 | 20:56 |
Delayed
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| Jun 15 | BOS | SFO | 17:39 | 20:23 |
Landed Late
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United Airlines Flight UA440 connects Boston, United States to San Francisco, United States, taking off from Boston Logan International Airport BOS and landing at San Francisco International Airport SFO.
How long is the UA440 flight from Boston to San Francisco?
The average flight time from Boston to San Francisco is 6 hours and 5 minutes. The flight distance is 4341 km / 2697 miles and the average flight speed is 712 km/h / 443 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA440 Boston to San Francisco?
The Airportia On-Time Performance Rating for United Airlines Flight UA440 is 4.2/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA440 arriving at?
Flight UA440 arrives at San Francisco International Airport (SFO) Terminal 2.
When was the latest UA440 flight?
The latest flight took off on Thursday, June 25th, 2026 with the flight status being En-Route on 20:46.
How else can the flight UA440 be referenced as?
This United Airlines flight can also be referenced as UAL440, UA0440, UA 440, UAL 440.
How often is flight UA440 delayed?
On average, 100% of all UA440 flights are delayed. The average delay is 48 minutes.
Can I get compensation for my delayed or cancelled UA440 flight or baggage issues?
If your UA440 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 UA440 Flight Tracker above for more details.
Flight UA440 is code-shared by 3 airlines using the flight numbers AZ4376, NZ9025, VA8580
Other flights departing from Boston BOS: WN696, UA1017, WN211, WN888
Other flights arriving at San Francisco SFO: LO37, MX2312, UA2455, UA5592
All flights connecting Boston BOS to San Francisco SFO.