WN300

WN300 (Southwest Airlines) is a multi-stop service on 47 routes, busiest St Louis to Dallas. Of 903 departures recorded from October 2024 to July 2026, 74.7% 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
January3718▼ 51.4%
February3529▼ 17.1%
March3634▼ 5.6%
April2549▲ 96.0%
May2251▲ 131.8%
June38100▲ 163.2%
July39108▲ 176.9%
August32––
September30––
October31–in progress
November39––
December45––
Year to date (Jan–Jul)232389▲ 67.7%

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
January93.9%94.4%▲ 0.5%
February91.4%69.0%▼ 24.6%
March77.8%85.3%▲ 9.7%
April80.0%79.6%▼ 0.5%
May61.9%64.7%▲ 4.5%
June71.1%48.0%▼ 32.4%
July71.8%66.7%▼ 7.1%
August59.4%––
September76.7%––
October93.3%–in progress
November84.2%––
December77.8%––
Year-to-date average (Jan–Jul)78.3%72.5%▼ 7.3%

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
January40▼ 100.0%
February00–
March00–
April00–
May10▼ 100.0%
June00–
July00–
August0––
September0––
October1–in progress
November1––
December0––
Year to date (Jan–Jul)50▼ 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 99.2% 896
  • Cancelled 0.8% 7

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

On time, leg by leg

  1. STL–DAL75 91.7%
  2. ATL–AUS57 70.2%
  3. AMA–LAS51 72.6%
  4. SDF–MDW49 77.6%
  5. DEN–PDX49 85.7%
  6. DAL–AMA46 91.3%
  7. ATL–BNA45 81.8%
  8. PDX–SMF42 64.3%

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

Legs flown under this number

12
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 30 30 83.3% 0
November 2024 35 35 94.3% 0
December 2024 40 40 92.5% 0
January 2025 37 33 93.9% 4
February 2025 35 35 91.4% 0
March 2025 36 36 77.8% 0
April 2025 25 25 80.0% 0
May 2025 22 21 61.9% 1
June 2025 38 38 71.1% 0
July 2025 39 39 71.8% 0
August 2025 32 32 59.4% 0
September 2025 30 30 76.7% 0
October 2025 31 30 93.3% 1
November 2025 39 38 84.2% 1
December 2025 45 45 77.8% 0
January 2026 18 18 94.4% 0
February 2026 29 29 69.0% 0
March 2026 34 34 85.3% 0
April 2026 49 49 79.6% 0
May 2026 51 51 64.7% 0
June 2026 100 100 48.0% 0
July 2026 108 108 66.7% 0

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