WN1221

WN1221 (Southwest Airlines) is a multi-stop service on 48 routes, busiest Santa Ana to San Jose. Of 789 departures recorded from October 2024 to July 2026, 69.7% 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
January4452▲ 18.2%
February3759▲ 59.5%
March4039▼ 2.5%
April2131▲ 47.6%
May2031▲ 55.0%
June2445▲ 87.5%
July2647▲ 80.8%
August30––
September29––
October43–in progress
November52––
December56––
Year to date (Jan–Jul)212304▲ 43.4%

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
January77.3%92.0%▲ 19.1%
February59.5%84.5%▲ 42.1%
March95.0%62.2%▼ 34.6%
April71.4%48.4%▼ 32.3%
May55.0%30.0%▼ 45.5%
June62.5%51.1%▼ 18.2%
July61.5%61.7%▲ 0.3%
August56.7%––
September69.0%––
October88.4%–in progress
November61.5%––
December64.3%––
Year-to-date average (Jan–Jul)68.9%61.4%▼ 10.9%

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
January02–
February01–
March02–
April00–
May01–
June00–
July00–
August0––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)06

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 99.2% 783
  • Cancelled 0.8% 6

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

On time, leg by leg

  1. SNA–SJC68 80.9%
  2. MCO–MKE57 63.2%
  3. DEN–AUS51 60.8%
  4. ELP–LAX50 91.8%
  5. PHX–SAT42 40.5%
  6. RSW–BWI31 96.8%
  7. MSY–TPA31 54.8%
  8. DAL–ELP30 86.2%

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

Legs flown under this number

8
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 95.0% 0
November 2024 16 16 100.0% 0
December 2024 27 27 85.2% 0
January 2025 44 44 77.3% 0
February 2025 37 37 59.5% 0
March 2025 40 40 95.0% 0
April 2025 21 21 71.4% 0
May 2025 20 20 55.0% 0
June 2025 24 24 62.5% 0
July 2025 26 26 61.5% 0
August 2025 30 30 56.7% 0
September 2025 29 29 69.0% 0
October 2025 43 43 88.4% 0
November 2025 52 52 61.5% 0
December 2025 56 56 64.3% 0
January 2026 52 50 92.0% 2
February 2026 59 58 84.5% 1
March 2026 39 37 62.2% 2
April 2026 31 31 48.4% 0
May 2026 31 30 30.0% 1
June 2026 45 45 51.1% 0
July 2026 47 47 61.7% 0

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