Flight profile · Delta Air Lines
DL2635
Seattle (SEA) to San Francisco (SFO) · scheduled 9:20 PM – 11:33 PM
How DL2635 performs
418 operations, 2025-04-14 to 2026-06-30.
DL2635 arrived on time 75.4% of the time, against 69.9% for all SEA → SFO flights — this specific departure is 5.5 percentage points better than the route as a whole. Against Delta Air Lines’s own flights on this route it is 2.4 points better.
Source: US DOT Bureau of Transportation Statistics · 418 operations between 2025-04-14 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL2635 | 75.4% | 0.96% | -3 min | 5.8% | 418 |
| Delta Air Lines on SEA → SFO | 73.0% | 0.98% | -4 min | 8.7% | 2,652 |
| All SEA → SFO flights | 69.9% | 1.02% | 0 min | 8.9% | 20,106 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-04-14 to 2026-06-30
Other routes DL2635 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| MCO→SEA Orlando to Seattle | 2024-12-19 – 2026-01-04 | 26 | — |
| FSD→MSP Sioux Falls to Minneapolis | 2024-12-01 – 2024-12-01 | 1 | — |
| MSP→FSD Minneapolis to Sioux Falls | 2024-12-01 – 2024-12-01 | 1 | — |
| JFK→BOS New York to Boston | 2024-11-29 – 2024-11-29 | 1 | — |
| ATL→TRI Atlanta to Blountville | 2024-11-11 – 2024-11-11 | 1 | — |
| TRI→ATL Blountville to Atlanta | 2024-11-11 – 2024-11-11 | 1 | — |
| MSP→PIT Minneapolis to Pittsburgh | 2023-07-01 – 2024-11-10 | 67 | — |
| LGA→MEM New York to Memphis | 2024-11-08 – 2024-11-08 | 1 | — |
| MEM→LGA Memphis to New York | 2024-11-08 – 2024-11-08 | 1 | — |
| BNA→BOS Nashville to Boston | 2024-11-02 – 2024-11-02 | 1 | — |
| BOS→BNA Boston to Nashville | 2024-11-02 – 2024-11-02 | 1 | — |
| SAT→SLC San Antonio to Salt Lake City | 2024-07-08 – 2024-09-08 | 55 | — |
| MIA→BOS Miami to Boston | 2024-06-07 – 2024-07-07 | 31 | — |
| ATL→SRQ Atlanta to Sarasota/Bradenton | 2023-12-17 – 2024-06-06 | 164 | 86.6% |
| SRQ→ATL Sarasota/Bradenton to Atlanta | 2023-12-17 – 2024-06-06 | 159 | 88.1% |
| DTW→PVD Detroit to Providence/Warwick | 2023-09-05 – 2023-12-06 | 64 | — |
| PBI→ATL West Palm Beach to Atlanta | 2023-10-09 – 2023-11-04 | 27 | — |
Because the same number has served different journeys, the statistics above describe only the route DL2635 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 418 records of DL2635 operating SEA → SFO, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.