Flight OddsDL2635 SEA → SFO
Delta Air Lines · Seattle, WA to San Francisco, CA · 340 flights observed, 2025-07-01 to 2026-06-30 · 679 mi
DL2635 covers more than one route in the data window — the stats below are for SEA → SFO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
76%
Median delay
-2 min
90th percentile
+41 min
Cancellation rate
1%
How often is DL2635 on time?
Across 340 flights on SEA → SFO from 2025-07-01 to 2026-06-30, DL2635 arrived within 15 minutes of schedule 76% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +41 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 255 | 76% |
| 16-30 min | 32 | 9% |
| 31-60 min | 32 | 9% |
| 61-120 min | 13 | 4% |
| 2+ hrs | 5 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 77% | +13 min |
| 2025-08 | 31 | 77% | +7 min |
| 2025-09 | 23 | 91% | -4 min |
| 2025-10 | 30 | 73% | +12 min |
| 2025-11 | 29 | 59% | +15 min |
| 2025-12 | 19 | 95% | -9 min |
| 2026-01 | 26 | 77% | +24 min |
| 2026-02 | 28 | 71% | +9 min |
| 2026-03 | 29 | 79% | +6 min |
| 2026-04 | 30 | 80% | +2 min |
| 2026-05 | 31 | 68% | +2 min |
| 2026-06 | 30 | 70% | +10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 50 | 70% |
| Tue | 48 | 79% |
| Wed | 48 | 71% |
| Thu | 49 | 78% |
| Fri | 47 | 79% |
| Sat | 47 | 89% |
| Sun | 48 | 65% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…