WN1433

WN1433 (Southwest Airlines) is a multi-stop service on 36 routes, busiest Denver to New York. Of 767 departures recorded from October 2024 to July 2026, 78.0% 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
January4027▼ 32.5%
February3420▼ 41.2%
March3134▲ 9.7%
April2144▲ 109.5%
May1749▲ 188.2%
June2747▲ 74.1%
July3244▲ 37.5%
August47––
September52––
October36–in progress
November40––
December45––
Year to date (Jan–Jul)202265▲ 31.2%

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
January70.0%73.1%▲ 4.4%
February85.3%50.0%▼ 41.4%
March80.7%81.8%▲ 1.5%
April90.5%84.1%▼ 7.1%
May94.1%79.6%▼ 15.4%
June85.2%63.8%▼ 25.1%
July75.0%60.5%▼ 19.4%
August78.3%––
September73.1%––
October91.7%–in progress
November80.0%––
December71.1%––
Year-to-date average (Jan–Jul)83.0%70.4%▼ 15.1%

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
January01–
February00–
March01–
April00–
May00–
June00–
July01–
August1––
September0––
October0–in progress
November0––
December0––
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 99.3% 762
  • Cancelled 0.7% 5

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

On time, leg by leg

  1. DEN–LGA110 82.6%
  2. SNA–SJC57 82.5%
  3. MEM–HOU50 74.0%
  4. DCA–HOU48 42.6%
  5. DAL–TPA46 82.6%
  6. BOS–MDW42 78.1%
  7. MDW–MEM39 89.7%
  8. BNA–MIA34 97.1%

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

Legs flown under this number

10
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 100.0% 0
November 2024 29 29 89.7% 0
December 2024 31 30 83.3% 1
January 2025 40 40 70.0% 0
February 2025 34 34 85.3% 0
March 2025 31 31 80.7% 0
April 2025 21 21 90.5% 0
May 2025 17 17 94.1% 0
June 2025 27 27 85.2% 0
July 2025 32 32 75.0% 0
August 2025 47 46 78.3% 1
September 2025 52 52 73.1% 0
October 2025 36 36 91.7% 0
November 2025 40 40 80.0% 0
December 2025 45 45 71.1% 0
January 2026 27 26 73.1% 1
February 2026 20 20 50.0% 0
March 2026 34 33 81.8% 1
April 2026 44 44 84.1% 0
May 2026 49 49 79.6% 0
June 2026 47 47 63.8% 0
July 2026 44 43 60.5% 1

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