WN1246

WN1246 (Southwest Airlines) is a multi-stop service on 41 routes, busiest Ontario to San Jose. Of 805 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
January3120▼ 35.5%
February28280.0%
March3150▲ 61.3%
April3346▲ 39.4%
May3444▲ 29.4%
June3631▼ 13.9%
July4132▼ 22.0%
August78––
September90––
October26–in progress
November29––
December23––
Year to date (Jan–Jul)234251▲ 7.3%

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
January83.9%75.0%▼ 10.6%
February82.1%65.4%▼ 20.4%
March93.3%48.0%▼ 48.6%
April75.8%55.6%▼ 26.7%
May73.5%61.4%▼ 16.6%
June62.9%90.3%▲ 43.7%
July61.0%93.8%▲ 53.7%
August82.1%––
September80.0%––
October73.1%–in progress
November86.2%––
December60.9%––
Year-to-date average (Jan–Jul)76.1%69.9%▼ 8.1%

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
January00–
February02–
March10▼ 100.0%
April01–
May00–
June10▼ 100.0%
July00–
August0––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)23▲ 50.0%

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 99.4% 800
  • Cancelled 0.6% 5

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

On time, leg by leg

  1. ONT–SJC108 80.6%
  2. BNA–PHX85 64.7%
  3. VPS–BNA57 94.7%
  4. CVG–BWI57 91.2%
  5. PHX–MCI50 64.0%
  6. OAK–OGG46 82.6%
  7. BWI–RIC33 81.8%

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 20 20 90.0% 0
November 2024 26 26 84.6% 0
December 2024 28 28 78.6% 0
January 2025 31 31 83.9% 0
February 2025 28 28 82.1% 0
March 2025 31 30 93.3% 1
April 2025 33 33 75.8% 0
May 2025 34 34 73.5% 0
June 2025 36 35 62.9% 1
July 2025 41 41 61.0% 0
August 2025 78 78 82.1% 0
September 2025 90 90 80.0% 0
October 2025 26 26 73.1% 0
November 2025 29 29 86.2% 0
December 2025 23 23 60.9% 0
January 2026 20 20 75.0% 0
February 2026 28 26 65.4% 2
March 2026 50 50 48.0% 0
April 2026 46 45 55.6% 1
May 2026 44 44 61.4% 0
June 2026 31 31 90.3% 0
July 2026 32 32 93.8% 0

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