OO3979

OO3979 (SkyWest Airlines) is a multi-stop service on 4 routes, busiest San Jose to Los Angeles. Of 660 departures recorded from October 2024 to July 2026, 93.3% 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
January30300.0%
February28280.0%
March31310.0%
April30300.0%
May316▼ 80.6%
June3042▲ 40.0%
July3154▲ 74.2%
August31––
September30––
October31–in progress
November30––
December28––
Year to date (Jan–Jul)211221▲ 4.7%

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
January96.7%100.0%▲ 3.4%
February100.0%100.0%0.0%
March100.0%76.7%▼ 23.3%
April96.7%90.0%▼ 6.9%
May96.8%100.0%▲ 3.3%
June93.3%88.1%▼ 5.6%
July100.0%76.9%▼ 23.1%
August96.8%––
September100.0%––
October96.8%–in progress
November93.3%––
December96.3%––
Year-to-date average (Jan–Jul)97.6%90.2%▼ 7.6%

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–
March01–
April00–
May00–
June00–
July02–
August0––
September0––
October0–in progress
November0––
December1––
Year to date (Jan–Jul)03

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 99.4% 656
  • Cancelled 0.6% 4

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

On time, leg by leg

  1. SJC–LAX528 96.6%
  2. DTW–AZO48 80.9%
  3. AZO–DTW48 83.0%
  4. GRR–DTW36 74.3%

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

Legs flown under this number

4
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 95.0% 0
November 2024 30 30 96.7% 0
December 2024 28 28 82.1% 0
January 2025 30 30 96.7% 0
February 2025 28 28 100.0% 0
March 2025 31 31 100.0% 0
April 2025 30 30 96.7% 0
May 2025 31 31 96.8% 0
June 2025 30 30 93.3% 0
July 2025 31 31 100.0% 0
August 2025 31 31 96.8% 0
September 2025 30 30 100.0% 0
October 2025 31 31 96.8% 0
November 2025 30 30 93.3% 0
December 2025 28 27 96.3% 1
January 2026 30 30 100.0% 0
February 2026 28 28 100.0% 0
March 2026 31 30 76.7% 1
April 2026 30 30 90.0% 0
May 2026 6 6 100.0% 0
June 2026 42 42 88.1% 0
July 2026 54 52 76.9% 2

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