WN2129

WN2129 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Chicago to Los Angeles. Of 602 departures recorded from October 2024 to July 2026, 75.4% 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
January3225▼ 21.9%
February3326▼ 21.2%
March1031▲ 210.0%
April2440▲ 66.7%
May3244▲ 37.5%
June2431▲ 29.2%
July2131▲ 47.6%
August26––
September26––
October39–in progress
November16––
December13––
Year to date (Jan–Jul)176228▲ 29.5%

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
January78.1%76.0%▼ 2.7%
February87.9%44.0%▼ 49.9%
March80.0%50.0%▼ 37.5%
April70.8%65.0%▼ 8.2%
May65.6%52.3%▼ 20.4%
June83.3%90.3%▲ 8.4%
July100.0%96.8%▼ 3.2%
August72.0%––
September69.2%––
October92.3%–in progress
November100.0%––
December76.9%––
Year-to-date average (Jan–Jul)80.8%67.8%▼ 16.2%

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–
February01–
March01–
April00–
May00–
June00–
July00–
August1––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)02

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% 598
  • Cancelled 0.7% 4

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

On time, leg by leg

  1. MDW–LAX92 76.9%
  2. PHX–OMA58 63.8%
  3. IND–MCO57 96.5%
  4. BHM–MCO45 97.8%
  5. PHX–ABQ42 54.8%
  6. PHX–PIT33 59.4%
  7. SAN–DEN31 90.3%

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

Legs flown under this number

7
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 22 22 95.5% 0
November 2024 28 28 78.6% 0
December 2024 28 27 63.0% 1
January 2025 32 32 78.1% 0
February 2025 33 33 87.9% 0
March 2025 10 10 80.0% 0
April 2025 24 24 70.8% 0
May 2025 32 32 65.6% 0
June 2025 24 24 83.3% 0
July 2025 21 21 100.0% 0
August 2025 26 25 72.0% 1
September 2025 26 26 69.2% 0
October 2025 39 39 92.3% 0
November 2025 16 16 100.0% 0
December 2025 13 13 76.9% 0
January 2026 25 25 76.0% 0
February 2026 26 25 44.0% 1
March 2026 31 30 50.0% 1
April 2026 40 40 65.0% 0
May 2026 44 44 52.3% 0
June 2026 31 31 90.3% 0
July 2026 31 31 96.8% 0

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