About 1 in 3 DL 2635 flights from Seattle arrived 15+ minutes late, diverted or cancelled over the past year (31%); 1.2% were cancelled. The typical flight landed 0 minutes early.
DL 2635: SEA → SFO
Scheduled to leave Seattle at 9:45 p.m. local time. Over the past year it arrived on time 69% of the time (340 flights), in line with other DL flights on the route at that hour (68%). Last seen in the data Aug 31, 2026.
Usually Delta Air Lines's last flight of the day from Seattle to San Francisco (100% of days). Delta Air Lines's last SEA–SFO flight was cancelled 1.1% of the time, against 1.5% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 7:20 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 51 | 61% |
| Tuesday | 48 | 71% |
| Wednesday | 48 | 69% |
| Thursday | 49 | 69% |
| Friday | 48 | 67% |
| Saturday | 47 | 89% |
| Sunday | 49 | 57% |
Why it was late
All flights SEA → SFO · Connecting off DL 2635? Check the risk
Questions
How often is DL 2635 from SEA to SFO late?
Delta Air Lines 2635 from Seattle, WA to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 31% of 340 scheduled flights between September 2025 and August 2026. 1.2% 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 Delta Air Lines for today's flight. Method.