OO5540

OO5540 (SkyWest Airlines) is a multi-stop service on 12 routes, busiest Chicago to Fort Wayne. Of 565 departures recorded from October 2024 to July 2026, 77.0% left on time, according to the US BTS.

Recorded departures by month

All legs under this number combined; see the leg table.

The most recent periods19 periods
PeriodDepartures 2025Departures 2026Change vs last year
January316▼ 80.6%
February2817▼ 39.3%
March31310.0%
April30300.0%
May3031▲ 3.3%
June2730▲ 11.1%
July3031▲ 3.3%
August31––
September9––
October26–in progress
November23––
December31––
Year to date (Jan–Jul)207176▼ 15.0%

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
January71.0%100.0%▲ 40.9%
February78.6%94.1%▲ 19.8%
March83.3%90.3%▲ 8.4%
April86.7%46.7%▼ 46.2%
May60.0%90.3%▲ 50.5%
June64.0%63.3%▼ 1.0%
July72.4%87.1%▲ 20.3%
August80.7%––
September77.8%––
October76.9%–in progress
November91.3%––
December76.7%––
Year-to-date average (Jan–Jul)73.7%81.7%▲ 10.8%

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–
February00–
March10▼ 100.0%
April00–
May00–
June20▼ 100.0%
July10▼ 100.0%
August0––
September0––
October0–in progress
November0––
December1––
Year to date (Jan–Jul)40▼ 100.0%

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.

This number flies several legs

Several legs: the headline figure averages all of them. See the leg table.

Cancellation share

  • Not cancelled 99.1% 560
  • Cancelled 0.9% 5

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

On time, leg by leg

  1. ORD–FWA181 78.3%
  2. RDD–DEN149 75.2%
  3. OKC–IAH113 74.6%

Departures within 15 minutes of schedule; small figure = departures recorded.

Legs flown under this number

3
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 80.0% 0
November 2024 29 29 79.3% 0
December 2024 13 13 61.5% 0
January 2025 31 31 71.0% 0
February 2025 28 28 78.6% 0
March 2025 31 30 83.3% 1
April 2025 30 30 86.7% 0
May 2025 30 30 60.0% 0
June 2025 27 25 64.0% 2
July 2025 30 29 72.4% 1
August 2025 31 31 80.7% 0
September 2025 9 9 77.8% 0
October 2025 26 26 76.9% 0
November 2025 23 23 91.3% 0
December 2025 31 30 76.7% 1
January 2026 6 6 100.0% 0
February 2026 17 17 94.1% 0
March 2026 31 31 90.3% 0
April 2026 30 30 46.7% 0
May 2026 31 31 90.3% 0
June 2026 30 30 63.3% 0
July 2026 31 31 87.1% 0

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