WN240

WN240 (Southwest Airlines) is a multi-stop service on 36 routes, busiest Houston to Miami. Of 624 departures recorded from October 2024 to July 2026, 74.8% 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
January2631▲ 19.2%
February1828▲ 55.6%
March2639▲ 50.0%
April2035▲ 75.0%
May1735▲ 105.9%
June3334▲ 3.0%
July35350.0%
August24––
September21––
October30–in progress
November28––
December29––
Year to date (Jan–Jul)175237▲ 35.4%

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
January88.5%82.8%▼ 6.4%
February83.3%75.0%▼ 10.0%
March88.5%81.6%▼ 7.8%
April90.0%62.9%▼ 30.2%
May88.2%51.4%▼ 41.7%
June57.6%73.5%▲ 27.7%
July75.8%68.6%▼ 9.5%
August58.3%––
September70.0%––
October76.7%–in progress
November77.8%––
December75.0%––
Year-to-date average (Jan–Jul)81.7%70.8%▼ 13.3%

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
January02–
February00–
March01–
April00–
May00–
June00–
July20▼ 100.0%
August0––
September1––
October0–in progress
November1––
December1––
Year to date (Jan–Jul)23▲ 50.0%

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 98.7% 616
  • Cancelled 1.3% 8

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

On time, leg by leg

  1. HOU–MIA58 58.6%
  2. BNA–PIT55 75.5%
  3. ABQ–SAN55 77.4%
  4. BWI–BUF43 63.4%
  5. RNO–LGB39 68.4%
  6. ATL–STL34 73.5%
  7. ATL–BWI34 85.3%
  8. SMF–SAN33 93.8%

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

Legs flown under this number

9
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 33 33 72.7% 0
November 2024 26 26 76.9% 0
December 2024 21 21 100.0% 0
January 2025 26 26 88.5% 0
February 2025 18 18 83.3% 0
March 2025 26 26 88.5% 0
April 2025 20 20 90.0% 0
May 2025 17 17 88.2% 0
June 2025 33 33 57.6% 0
July 2025 35 33 75.8% 2
August 2025 24 24 58.3% 0
September 2025 21 20 70.0% 1
October 2025 30 30 76.7% 0
November 2025 28 27 77.8% 1
December 2025 29 28 75.0% 1
January 2026 31 29 82.8% 2
February 2026 28 28 75.0% 0
March 2026 39 38 81.6% 1
April 2026 35 35 62.9% 0
May 2026 35 35 51.4% 0
June 2026 34 34 73.5% 0
July 2026 35 35 68.6% 0

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