JFK → SEA

AS23

AS23 (Alaska Airlines) flies New York to Seattle. Of 577 departures recorded from October 2024 to July 2026, 86.9% left on time, according to the US BTS.

Recorded departures by month

Months without data are left blank.

The most recent periods18 periods
PeriodDepartures 2025Departures 2026Change vs last year
January531▲ 520.0%
February–24–
March1328▲ 115.4%
April3029▼ 3.3%
May31310.0%
June3029▼ 3.3%
July31310.0%
August31––
September30––
October31–in progress
November30––
December31––

according to the US BTS · October 2024 → July 2026

On-time departures by month

All legs combined

Months without data are left blank.

On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.

The most recent periods18 periods
PeriodOn time 2025On time 2026Change vs last year
January100.0%86.2%▼ 13.8%
February–87.0%–
March100.0%85.2%▼ 14.8%
April89.7%96.6%▲ 7.7%
May93.6%83.3%▼ 10.9%
June76.7%72.4%▼ 5.6%
July76.7%89.7%▲ 16.9%
August74.2%––
September96.7%––
October90.3%–in progress
November79.3%––
December86.7%––

according to the US BTS · October 2024 → July 2026

Average departure delay by month

All legs combined

Months without data are left blank.

according to the US BTS · October 2024 → July 2026

Cancelled departures by month

All legs combined

Months without data are left blank.

The most recent periods18 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January02–
February–1–
March01–
April10▼ 100.0%
May01–
June00–
July12▲ 100.0%
August0––
September0––
October0–in progress
November1––
December1––

according to the US BTS · October 2024 → July 2026

This is not a forecast

This is a historical record of departures already flown, not a forecast for your flight.

Cancellation share

  • Not cancelled 98.1% 566
  • Cancelled 1.9% 11

Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026

Legs flown under this number

1
RoutesDistance (km)Avg delay On timeDepartures
JFK SEA John F. Kennedy International Airport – Seattle–Tacoma International Airport 3,887 5.3 min 86.9% 577
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 90.0% 0
November 2024 30 30 96.7% 0
December 2024 31 31 93.6% 0
January 2025 5 5 100.0% 0
March 2025 13 13 100.0% 0
April 2025 30 29 89.7% 1
May 2025 31 31 93.6% 0
June 2025 30 30 76.7% 0
July 2025 31 30 76.7% 1
August 2025 31 31 74.2% 0
September 2025 30 30 96.7% 0
October 2025 31 31 90.3% 0
November 2025 30 29 79.3% 1
December 2025 31 30 86.7% 1
January 2026 31 29 86.2% 2
February 2026 24 23 87.0% 1
March 2026 28 27 85.2% 1
April 2026 29 29 96.6% 0
May 2026 31 30 83.3% 1
June 2026 29 29 72.4% 0
July 2026 31 29 89.7% 2

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