Flight AS138
Alaska Airlines flight AS138
Looking for AS138 in the air…
Alerts at this flight's airports
Missoula (MSO) to Seattle (SEA)
Historically, this flight arrives 15+ minutes late 14% of the time, and when it is late the delay averages 153 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 85.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 153 min
- Flights arriving 15+ minutes late
- Flights tracked
- 70
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 54%
- Late-arriving aircraft 37%
- Air traffic control & airport 8%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Los Angeles (LAX) to San Francisco (SFO)
Historically, this flight arrives 15+ minutes late 42% of the time, and when it is late the delay averages 41 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 58.1%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 41 min
- Flights arriving 15+ minutes late
- Flights tracked
- 31
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 51%
- Air traffic control & airport 49%
- Airline (crew, maintenance, cleaning) 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Detroit (DTW) to Seattle (SEA)
Historically, this flight arrives 15+ minutes late 57% of the time, and when it is late the delay averages 73 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 42.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 73 min
- Flights arriving 15+ minutes late
- Flights tracked
- 28
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 36%
- Airline (crew, maintenance, cleaning) 32%
- Air traffic control & airport 29%
- Extreme weather 2%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
San Francisco (SFO) to Portland (PDX)
Historically, this flight arrives 15+ minutes late 0% of the time. It was cancelled 0.0% of the time.
- 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
- 21
- Scheduled flights in the period
Anchorage (ANC) to Chicago (ORD)
Only 18 flights on record, which is too few for reliable odds.
- On-time arrivals
- 83.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 35 min
- Flights arriving 15+ minutes late
- Flights tracked
- 18
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 100%
- Airline (crew, maintenance, cleaning) 0%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
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Headlines found by Google News; stories open on the publisher's site.
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 87.5% | 16 |
| October 2025 | 95.7% | 23 |
| November 2025 | 62.5% | 8 |
| December 2025 | 28.6% | 14 |
| January 2026 | 80.6% | 31 |
| February 2026 | 89.3% | 28 |
| March 2026 | 83.9% | 31 |
| April 2026 | 29.4% | 17 |
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