About 1 in 7 UA 5676 flights from Seattle arrived 15+ minutes late, diverted or cancelled over the past year (13%); 0.7% were cancelled. The typical flight landed 11 minutes early.
UA 5676: SEA → SFO
Scheduled to leave Seattle at 5:00 a.m. local time, operated by SkyWest as OO 5676. Over the past year it arrived on time 87% of the time (142 flights), worse than other UA flights on the route at that hour (91%). Last seen in the data Aug 10, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 23 | 91% |
| Tuesday | 21 | 76% |
| Wednesday | 15 | — |
| Thursday | 19 | — |
| Friday | 27 | 85% |
| Saturday | 27 | 81% |
| Sunday | 10 | — |
Why it was late
All flights SEA → SFO · Connecting off UA 5676? Check the risk
Questions
How often is UA 5676 from SEA to SFO late?
United Airlines 5676 from Seattle, WA to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 13% of 142 scheduled flights between September 2025 and August 2026. 0.7% 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.