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Flight AS309

Alaska Airlines flight AS309

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Looking for AS309 in the air…

Orlando (MCO) to Seattle (SEA)

Historically, this flight arrives 15+ minutes late 38% of the time, and when it is late the delay averages 54 minutes. It was cancelled 0.9% of the time.

On-time arrivals
62.4%
Less than 15 minutes late
Cancelled
0.9%
Of scheduled flights
Average delay when late
54 min
Flights arriving 15+ minutes late
Flights tracked
110
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 40%
  • Airline (crew, maintenance, cleaning) 28%
  • Air traffic control & airport 20%
  • Extreme weather 12%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Boston (BOS) to Seattle (SEA)

Historically, this flight arrives 15+ minutes late 12% of the time, and when it is late the delay averages 54 minutes. It was cancelled 5.6% of the time.

On-time arrivals
88.2%
Less than 15 minutes late
Cancelled
5.6%
Of scheduled flights
Average delay when late
54 min
Flights arriving 15+ minutes late
Flights tracked
36
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 77%
  • Late-arriving aircraft 23%
  • Airline (crew, maintenance, cleaning) 0%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

San Jose (SJC) to Seattle (SEA)

Historically, this flight arrives 15+ minutes late 14% of the time, and when it is late the delay averages 209 minutes. It was cancelled 4.5% of the time.

On-time arrivals
85.7%
Less than 15 minutes late
Cancelled
4.5%
Of scheduled flights
Average delay when late
209 min
Flights arriving 15+ minutes late
Flights tracked
22
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 60%
  • Late-arriving aircraft 21%
  • Air traffic control & airport 19%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Denver (DEN) to Seattle (SEA)

Only 11 flights on record, which is too few for reliable odds.

On-time arrivals
45.5%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
80 min
Flights arriving 15+ minutes late
Flights tracked
11
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 89%
  • Air traffic control & airport 11%
  • Airline (crew, maintenance, cleaning) 0%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Kailua-Kona (KOA) to Los Angeles (LAX)

Only 10 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
10
Scheduled flights in the period

Anchorage (ANC) to Honolulu, Oahu (HNL)

Only 1 flight on record, which is too few for reliable odds.

On-time arrivals
0.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
36 min
Flights arriving 15+ minutes late
Flights tracked
1
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).

Anchorage (ANC) to Seattle (SEA)

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

Bozeman (BZN) to Seattle (SEA)

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

Eugene (EUG) to Seattle (SEA)

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

In the news

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On-time arrivals by month
Oct 2025 Aug 2026
Show as table
MonthOn timeFlights
October 2025 85.7% 22
November 2025 100.0% 1
December 2025 60.0% 15
January 2026 75.9% 31
February 2026 81.8% 11
March 2026 100.0% 6
April 2026 86.7% 15
May 2026 91.7% 12
June 2026 57.1% 21
July 2026 58.6% 30
August 2026 55.2% 29

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

Latest airport & airline headlines

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Headlines found by Google News; stories open on the publisher's site.