| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 31 | SFO | BOS | 22:45 | 06:56 |
Landed Late
|
Track > |
| Jul 30 | SFO | BOS | 22:02 | 06:02 |
Landed
|
Track > |
| Jul 29 | SFO | BOS | 21:49 | 06:03 |
Landed
|
Track > |
| Jul 28 | SFO | BOS | 22:05 | 06:08 |
Landed
|
Track > |
| Jul 27 | SFO | BOS | 22:26 | 06:45 |
Landed Late
|
Track > |
| Jul 26 | SFO | BOS | 21:46 | 05:43 |
Landed
|
Track > |
| Jul 25 | SFO | BOS | 00:25 | 08:24 |
Delayed
|
Track > |
| Jul 24 | SFO | BOS | 22:23 | 06:20 |
Landed
|
Track > |
| Jul 23 | SFO | BOS | 22:05 | 06:29 |
Landed Late
|
Track > |
| Jul 22 | SFO | BOS | 22:17 | 06:17 |
Landed
|
Track > |
United Airlines Flight UA431 connects San Francisco, United States to Boston, United States, taking off from San Francisco International Airport SFO and landing at Boston Logan International Airport BOS.
How long is the UA431 flight from San Francisco to Boston?
The average flight time from San Francisco to Boston is 5 hours and 6 minutes. The flight distance is 4341 km / 2697 miles and the average flight speed is 851 km/h / 529 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA431 San Francisco to Boston?
The Airportia On-Time Performance Rating for United Airlines Flight UA431 is 4.6/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA431 arriving at?
Flight UA431 arrives at Boston Logan International Airport (BOS) Terminal B.
When was the latest UA431 flight?
The latest flight took off on Friday, August 1st, 2025 with the flight status being Landed on 06:56.
How else can the flight UA431 be referenced as?
This United Airlines flight can also be referenced as UAL431, UA0431, UA 431, UAL 431.
How often is flight UA431 delayed?
On average, 60% of all UA431 flights are delayed. The average delay is 37 minutes.
Can I get compensation for my delayed or cancelled UA431 flight or baggage issues?
If your UA431 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 UA431 Flight Tracker above for more details.
Flight UA431 is code-shared by 2 airlines using the flight numbers NZ9012, VA8308
Other flights departing from San Francisco SFO: UA1660, UA2725, UA1190, WN1810
Other flights arriving at Boston BOS: DL719, AA4777, UA2359, WN3976
All flights connecting San Francisco SFO to Boston BOS.
