WN3909

WN3909 (Southwest Airlines) is a multi-stop service on 23 routes, busiest Phoenix to Burbank. Of 472 departures recorded from October 2024 to July 2026, 74.5% 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
January323▼ 90.6%
February207▼ 65.0%
March421▼ 97.6%
April484▼ 91.7%
May481▼ 97.9%
June727▲ 285.7%
July131▲ 3,000.0%
August24––
September26––
October48–in progress
November4––
December9––
Year to date (Jan–Jul)19874▼ 62.6%

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
January90.6%66.7%▼ 26.4%
February89.5%71.4%▼ 20.2%
March90.5%0.0%▼ 100.0%
April75.0%25.0%▼ 66.7%
May81.3%0.0%▼ 100.0%
June28.6%96.3%▲ 237.1%
July100.0%93.6%▼ 6.5%
August83.3%––
September73.1%––
October46.8%–in progress
November75.0%––
December22.2%––
Year-to-date average (Jan–Jul)79.3%50.4%▼ 36.5%

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–
February10▼ 100.0%
March00–
April00–
May00–
June00–
July00–
August0––
September0––
October1–in progress
November0––
December0––
Year to date (Jan–Jul)10▼ 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 99.6% 470
  • Cancelled 0.4% 2

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

On time, leg by leg

  1. PHX–BUR74 87.7%
  2. STL–DEN58 94.8%
  3. OKC–DCA50 78.0%
  4. BNA–MYR42 71.4%
  5. MKE–BNA32 71.9%
  6. DAL–MCO31 53.3%

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

Legs flown under this number

6
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 16 16 81.3% 0
November 2024 41 41 70.7% 0
December 2024 32 32 53.1% 0
January 2025 32 32 90.6% 0
February 2025 20 19 89.5% 1
March 2025 42 42 90.5% 0
April 2025 48 48 75.0% 0
May 2025 48 48 81.3% 0
June 2025 7 7 28.6% 0
July 2025 1 1 100.0% 0
August 2025 24 24 83.3% 0
September 2025 26 26 73.1% 0
October 2025 48 47 46.8% 1
November 2025 4 4 75.0% 0
December 2025 9 9 22.2% 0
January 2026 3 3 66.7% 0
February 2026 7 7 71.4% 0
March 2026 1 1 0.0% 0
April 2026 4 4 25.0% 0
May 2026 1 1 0.0% 0
June 2026 27 27 96.3% 0
July 2026 31 31 93.6% 0

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