SEA → ORD

DL2108

DL2108 (Delta Air Lines) flies Seattle to Chicago. Of 622 departures recorded from October 2024 to July 2026, 75.9% left on time, according to the US BTS.

Recorded departures by month

The most recent periods19 periods
PeriodDepartures 2025Departures 2026Change vs last year
January2731▲ 14.8%
February2227▲ 22.7%
March2931▲ 6.9%
April30300.0%
May31310.0%
June30300.0%
July31310.0%
August31––
September30––
October31–in progress
November29––
December31––
Year to date (Jan–Jul)200211▲ 5.5%

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
January63.0%71.0%▲ 12.7%
February68.2%88.5%▲ 29.7%
March81.5%58.6%▼ 28.1%
April70.0%93.3%▲ 33.3%
May96.8%74.2%▼ 23.3%
June83.3%73.3%▼ 12.0%
July80.0%76.7%▼ 4.2%
August71.0%––
September90.0%––
October90.3%–in progress
November53.6%––
December38.7%––
Year-to-date average (Jan–Jul)77.5%76.5%▼ 1.3%

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
January00–
February01–
March220.0%
April00–
May00–
June00–
July110.0%
August0––
September0––
October0–in progress
November1––
December0––
Year to date (Jan–Jul)34▲ 33.3%

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 98.7% 614
  • Cancelled 1.3% 8

Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026

Legs flown under this number

1
RoutesDistance (km)Avg delay On timeDepartures
SEA ORD Seattle–Tacoma International Airport – Chicago O'Hare International Airport 2,762 19.4 min 75.9% 622
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 12 12 100.0% 0
November 2024 18 18 88.9% 0
December 2024 29 29 75.9% 0
January 2025 27 27 63.0% 0
February 2025 22 22 68.2% 0
March 2025 29 27 81.5% 2
April 2025 30 30 70.0% 0
May 2025 31 31 96.8% 0
June 2025 30 30 83.3% 0
July 2025 31 30 80.0% 1
August 2025 31 31 71.0% 0
September 2025 30 30 90.0% 0
October 2025 31 31 90.3% 0
November 2025 29 28 53.6% 1
December 2025 31 31 38.7% 0
January 2026 31 31 71.0% 0
February 2026 27 26 88.5% 1
March 2026 31 29 58.6% 2
April 2026 30 30 93.3% 0
May 2026 31 31 74.2% 0
June 2026 30 30 73.3% 0
July 2026 31 30 76.7% 1

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