Flight AS635
Alaska Airlines flight AS635
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Watch Ground Delay Program SAN
Ground Delay Program at San Diego International Airport (SAN): Average 37 minutes, up to 1 hour and 11 minutes
Reason: airport volume
Airport status
Seattle (SEA) to Palm Springs (PSP)
Historically, this flight arrives 15+ minutes late 20% of the time, and when it is late the delay averages 42 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 80.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 42 min
- Flights arriving 15+ minutes late
- Flights tracked
- 70
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 62%
- Late-arriving aircraft 27%
- Air traffic control & airport 12%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Diego (SAN) to Sacramento (SMF)
Historically, this flight arrives 15+ minutes late 23% of the time, and when it is late the delay averages 37 minutes. It was cancelled 7.8% of the time.
- On-time arrivals
- 76.6%
- Less than 15 minutes late
- Cancelled
- 7.8%
- Of scheduled flights
- Average delay when late
- 37 min
- Flights arriving 15+ minutes late
- Flights tracked
- 51
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 36%
- Airline (crew, maintenance, cleaning) 35%
- Air traffic control & airport 23%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Seattle (SEA) to San Diego (SAN)
Only 18 flights on record, which is too few for reliable odds.
- On-time arrivals
- 55.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 41 min
- Flights arriving 15+ minutes late
- Flights tracked
- 18
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 79%
- Late-arriving aircraft 13%
- Extreme weather 7%
- Airline (crew, maintenance, cleaning) 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Palm Springs (PSP) to Portland (PDX)
Only 16 flights on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 16
- Scheduled flights in the period
Seattle (SEA) to San Jose (SJC)
Only 1 flight on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 1
- Scheduled flights in the period
Show as table
| Month | On time | Flights |
|---|---|---|
| November 2025 | 66.7% | 10 |
| December 2025 | 53.8% | 15 |
| January 2026 | 80.0% | 30 |
| February 2026 | 90.9% | 11 |
| March 2026 | 80.0% | 30 |
| April 2026 | 90.0% | 30 |
| May 2026 | 100.0% | 11 |
| June 2026 | 100.0% | 1 |
| July 2026 | 66.7% | 3 |
| August 2026 | 53.3% | 15 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data