Flight AS542
Alaska Airlines flight AS542
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Alerts at this flight's airports
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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 Dallas-Fort Worth (DFW)
Historically, this flight arrives 15+ minutes late 21% of the time, and when it is late the delay averages 41 minutes. It was cancelled 0.5% of the time.
- On-time arrivals
- 79.5%
- Less than 15 minutes late
- Cancelled
- 0.5%
- Of scheduled flights
- Average delay when late
- 41 min
- Flights arriving 15+ minutes late
- Flights tracked
- 196
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 40%
- Late-arriving aircraft 36%
- Air traffic control & airport 23%
- Security 2%
- Extreme weather 0%
Share of delay minutes airlines attributed to each cause (BTS).
Seattle (SEA) to Sacramento (SMF)
Historically, this flight arrives 15+ minutes late 22% of the time, and when it is late the delay averages 47 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 77.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 47 min
- Flights arriving 15+ minutes late
- Flights tracked
- 49
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 51%
- Airline (crew, maintenance, cleaning) 44%
- Air traffic control & airport 5%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Diego (SAN) to Portland (PDX)
Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 95 minutes. It was cancelled 5.0% of the time.
- On-time arrivals
- 84.2%
- Less than 15 minutes late
- Cancelled
- 5.0%
- Of scheduled flights
- Average delay when late
- 95 min
- Flights arriving 15+ minutes late
- Flights tracked
- 20
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 56%
- Extreme weather 42%
- Air traffic control & airport 1%
- Airline (crew, maintenance, cleaning) 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 77.8% | 18 |
| October 2025 | 100.0% | 7 |
| November 2025 | 75.9% | 29 |
| December 2025 | 70.8% | 25 |
| January 2026 | 60.0% | 5 |
| February 2026 | 80.0% | 10 |
| March 2026 | 95.2% | 22 |
| April 2026 | 85.2% | 27 |
| May 2026 | 80.6% | 31 |
| June 2026 | 76.7% | 30 |
| July 2026 | 83.9% | 31 |
| August 2026 | 70.0% | 30 |
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