WN123

WN123 (Southwest Airlines) is a multi-stop service on 35 routes, busiest Baltimore to Austin. Of 697 departures recorded from October 2024 to July 2026, 80.5% 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
January31310.0%
February2818▼ 35.7%
March3442▲ 23.5%
April2839▲ 39.3%
May2640▲ 53.8%
June5430▼ 44.4%
July5531▼ 43.6%
August24––
September17––
October31–in progress
November28––
December29––
Year to date (Jan–Jul)256231▼ 9.8%

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
January93.3%87.1%▼ 6.7%
February85.7%72.2%▼ 15.7%
March67.7%71.4%▲ 5.6%
April92.9%82.1%▼ 11.6%
May73.1%55.0%▼ 24.7%
June68.5%83.3%▲ 21.6%
July85.5%74.2%▼ 13.2%
August83.3%––
September100.0%––
October83.9%–in progress
November92.9%––
December79.3%––
Year-to-date average (Jan–Jul)80.9%75.0%▼ 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
January10▼ 100.0%
February00–
March00–
April00–
May00–
June00–
July00–
August0––
September0––
October0–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 99.9% 696
  • Cancelled 0.1% 1

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

On time, leg by leg

  1. BWI–AUS63 91.9%
  2. MDW–LAS47 76.6%
  3. SAN–AUS42 83.3%
  4. MCO–HOU42 83.3%
  5. LAX–STL42 85.7%
  6. HOU–MDW42 50.0%
  7. LAS–SAN41 90.2%
  8. ABQ–HOU41 95.1%

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 28 28 82.1% 0
November 2024 30 30 93.3% 0
December 2024 23 23 91.3% 0
January 2025 31 30 93.3% 1
February 2025 28 28 85.7% 0
March 2025 34 34 67.7% 0
April 2025 28 28 92.9% 0
May 2025 26 26 73.1% 0
June 2025 54 54 68.5% 0
July 2025 55 55 85.5% 0
August 2025 24 24 83.3% 0
September 2025 17 17 100.0% 0
October 2025 31 31 83.9% 0
November 2025 28 28 92.9% 0
December 2025 29 29 79.3% 0
January 2026 31 31 87.1% 0
February 2026 18 18 72.2% 0
March 2026 42 42 71.4% 0
April 2026 39 39 82.1% 0
May 2026 40 40 55.0% 0
June 2026 30 30 83.3% 0
July 2026 31 31 74.2% 0

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