WN324

WN324 (Southwest Airlines) is a multi-stop service on 37 routes, busiest San Diego to Houston. Of 751 departures recorded from October 2024 to July 2026, 75.9% 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
January3231▼ 3.1%
February28280.0%
March31310.0%
April3930▼ 23.1%
May4231▼ 26.2%
June3230▼ 6.3%
July3133▲ 6.5%
August52––
September56––
October47–in progress
November30––
December31––
Year to date (Jan–Jul)235214▼ 8.9%

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
January90.0%87.1%▼ 3.2%
February92.9%75.0%▼ 19.2%
March80.7%90.3%▲ 12.0%
April74.4%100.0%▲ 34.5%
May46.3%100.0%▲ 115.8%
June71.9%50.0%▼ 30.4%
July61.3%43.8%▼ 28.6%
August78.9%––
September69.6%––
October72.3%–in progress
November83.3%––
December80.7%––
Year-to-date average (Jan–Jul)73.9%78.0%▲ 5.6%

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
January20▼ 100.0%
February00–
March00–
April00–
May10▼ 100.0%
June00–
July01–
August0––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)31▼ 66.7%

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 99.5% 747
  • Cancelled 0.5% 4

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

On time, leg by leg

  1. SAN–HOU118 87.9%
  2. DEN–TPA61 72.1%
  3. MKE–MCO58 100.0%
  4. ABQ–LAS49 70.8%
  5. MCI–HOU45 88.9%
  6. SJC–GEG42 81.0%
  7. BUR–AUS42 88.1%
  8. SAN–OGG33 97.0%

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 17 17 88.2% 0
November 2024 32 32 96.9% 0
December 2024 37 37 62.2% 0
January 2025 32 30 90.0% 2
February 2025 28 28 92.9% 0
March 2025 31 31 80.7% 0
April 2025 39 39 74.4% 0
May 2025 42 41 46.3% 1
June 2025 32 32 71.9% 0
July 2025 31 31 61.3% 0
August 2025 52 52 78.9% 0
September 2025 56 56 69.6% 0
October 2025 47 47 72.3% 0
November 2025 30 30 83.3% 0
December 2025 31 31 80.7% 0
January 2026 31 31 87.1% 0
February 2026 28 28 75.0% 0
March 2026 31 31 90.3% 0
April 2026 30 30 100.0% 0
May 2026 31 31 100.0% 0
June 2026 30 30 50.0% 0
July 2026 33 32 43.8% 1

How to read this chart

Loading the guide…