About 1 in 4 UA 1372 flights from San Francisco arrived 15+ minutes late, diverted or cancelled over the past year (27%); 1.2% were cancelled. The typical flight landed 6 minutes early.
UA 1372: SFO → BOS
Scheduled to leave San Francisco at 12:25 p.m. local time. Over the past year it arrived on time 73% of the time (340 flights), better than other UA flights on the route at that hour (65%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 50 | 70% |
| Tuesday | 49 | 73% |
| Wednesday | 49 | 78% |
| Thursday | 47 | 68% |
| Friday | 48 | 77% |
| Saturday | 48 | 81% |
| Sunday | 49 | 65% |
Why it was late
All flights SFO → BOS · Connecting off UA 1372? Check the risk
UA 1372: LAX → SFO
Scheduled to leave Los Angeles at 7:30 a.m. local time. Over the past year it arrived on time 47% of the time (153 flights), worse than other UA flights on the route at that hour (59%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 23 | 48% |
| Tuesday | 22 | 59% |
| Wednesday | 22 | 55% |
| Thursday | 22 | 27% |
| Friday | 22 | 32% |
| Saturday | 22 | 59% |
| Sunday | 20 | 50% |
Why it was late
All flights LAX → SFO · Connecting off UA 1372? Check the risk
Questions
How often is UA 1372 from SFO to BOS late?
United Airlines 1372 from San Francisco, CA to Boston, MA arrived 15 or more minutes late, was diverted or was cancelled on 27% of 340 scheduled flights between September 2025 and August 2026. 1.2% were cancelled.
How often is UA 1372 from LAX to SFO late?
United Airlines 1372 from Los Angeles, CA to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 53% of 153 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.