JFK → SEA

DL740

DL740 (Delta Air Lines) flies New York to Seattle. Of 655 departures recorded from October 2024 to July 2026, 78.7% left on time, according to the US BTS.

Recorded departures by month

The most recent periods19 periods
PeriodDepartures 2025Departures 2026Change vs last year
January31310.0%
February28280.0%
March31310.0%
April30300.0%
May31310.0%
June30300.0%
July31310.0%
August30––
September30––
October31–in progress
November30––
December31––
Year to date (Jan–Jul)2122120.0%

according to the US BTS · October 2024 → July 2026

On-time departures by month

All legs combined

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

The most recent periods19 periods
PeriodOn time 2025On time 2026Change vs last year
January54.8%66.7%▲ 21.6%
February64.3%92.3%▲ 43.6%
March67.7%90.0%▲ 32.9%
April83.3%93.3%▲ 12.0%
May93.6%82.8%▼ 11.5%
June63.3%76.7%▲ 21.1%
July70.0%82.1%▲ 17.3%
August86.7%––
September83.3%––
October87.1%–in progress
November73.3%––
December76.7%––
Year-to-date average (Jan–Jul)71.0%83.4%▲ 17.5%

according to the US BTS · October 2024 → July 2026

Average departure delay by month

All legs combined

according to the US BTS · October 2024 → July 2026

Cancelled departures by month

All legs combined
The most recent periods19 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January01–
February02–
March01–
April00–
May02–
June00–
July13▲ 200.0%
August0––
September0––
October0–in progress
November0––
December1––
Year to date (Jan–Jul)19▲ 800.0%

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 98.3% 644
  • Cancelled 1.7% 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 12.5 min 78.7% 655
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 90.0% 0
November 2024 30 30 80.0% 0
December 2024 29 29 79.3% 0
January 2025 31 31 54.8% 0
February 2025 28 28 64.3% 0
March 2025 31 31 67.7% 0
April 2025 30 30 83.3% 0
May 2025 31 31 93.6% 0
June 2025 30 30 63.3% 0
July 2025 31 30 70.0% 1
August 2025 30 30 86.7% 0
September 2025 30 30 83.3% 0
October 2025 31 31 87.1% 0
November 2025 30 30 73.3% 0
December 2025 31 30 76.7% 1
January 2026 31 30 66.7% 1
February 2026 28 26 92.3% 2
March 2026 31 30 90.0% 1
April 2026 30 30 93.3% 0
May 2026 31 29 82.8% 2
June 2026 30 30 76.7% 0
July 2026 31 28 82.1% 3

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