WN2431

WN2431 (Southwest Airlines) is a multi-stop service on 32 routes, busiest Sacramento to Seattle. Of 636 departures recorded from October 2024 to July 2026, 77.0% 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
January2931▲ 6.9%
February1725▲ 47.1%
March3331▼ 6.1%
April2622▼ 15.4%
May2823▼ 17.9%
June5224▼ 53.8%
July5628▼ 50.0%
August24––
September17––
October46–in progress
November29––
December29––
Year to date (Jan–Jul)241184▼ 23.7%

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
January93.1%90.0%▼ 3.3%
February70.6%72.0%▲ 2.0%
March75.8%93.3%▲ 23.2%
April76.9%90.9%▲ 18.2%
May82.1%78.3%▼ 4.7%
June44.2%69.6%▲ 57.3%
July57.1%73.1%▲ 27.9%
August66.7%––
September76.5%––
October84.8%–in progress
November89.3%––
December78.6%––
Year-to-date average (Jan–Jul)71.4%81.0%▲ 13.5%

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
January01–
February00–
March01–
April00–
May00–
June01–
July02–
August0––
September0––
October0–in progress
November1––
December1––
Year to date (Jan–Jul)05

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 98.9% 629
  • Cancelled 1.1% 7

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

On time, leg by leg

  1. SMF–SEA62 83.9%
  2. IAD–DEN60 84.5%
  3. BWI–DJT47 87.0%
  4. SAN–LAS45 44.4%
  5. SJC–SAN43 53.5%
  6. LAX–SJC42 84.6%
  7. DEN–MKE40 80.0%
  8. BNA–RDU40 82.5%

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 19 19 89.5% 0
November 2024 19 19 100.0% 0
December 2024 28 28 89.3% 0
January 2025 29 29 93.1% 0
February 2025 17 17 70.6% 0
March 2025 33 33 75.8% 0
April 2025 26 26 76.9% 0
May 2025 28 28 82.1% 0
June 2025 52 52 44.2% 0
July 2025 56 56 57.1% 0
August 2025 24 24 66.7% 0
September 2025 17 17 76.5% 0
October 2025 46 46 84.8% 0
November 2025 29 28 89.3% 1
December 2025 29 28 78.6% 1
January 2026 31 30 90.0% 1
February 2026 25 25 72.0% 0
March 2026 31 30 93.3% 1
April 2026 22 22 90.9% 0
May 2026 23 23 78.3% 0
June 2026 24 23 69.6% 1
July 2026 28 26 73.1% 2

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