WN133

WN133 (Southwest Airlines) is a multi-stop service on 41 routes, busiest Portland to Denver. Of 774 departures recorded from October 2024 to July 2026, 71.4% 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
January36360.0%
February3746▲ 24.3%
March3340▲ 21.2%
April4541▼ 8.9%
May5244▼ 15.4%
June3343▲ 30.3%
July3043▲ 43.3%
August31––
September30––
October18–in progress
November31––
December27––
Year to date (Jan–Jul)266293▲ 10.2%

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
January88.9%86.1%▼ 3.1%
February86.5%84.8%▼ 2.0%
March90.6%75.0%▼ 17.2%
April71.1%48.8%▼ 31.4%
May78.9%36.4%▼ 53.9%
June51.5%39.5%▼ 23.3%
July46.7%44.2%▼ 5.3%
August80.7%––
September83.3%––
October72.2%–in progress
November83.9%––
December70.4%––
Year-to-date average (Jan–Jul)73.5%59.2%▼ 19.3%

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
January00–
February00–
March10▼ 100.0%
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% 773
  • 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. PDX–DEN118 93.2%
  2. SJC–PHX58 44.8%
  3. DEN–SNA53 77.4%
  4. DEN–SAT50 90.0%
  5. ABQ–LAS50 86.0%
  6. HOU–OKC40 85.0%
  7. SNA–OAK39 71.8%
  8. TPA–SAN34 23.5%

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 20 20 90.0% 0
November 2024 28 28 100.0% 0
December 2024 30 30 96.7% 0
January 2025 36 36 88.9% 0
February 2025 37 37 86.5% 0
March 2025 33 32 90.6% 1
April 2025 45 45 71.1% 0
May 2025 52 52 78.9% 0
June 2025 33 33 51.5% 0
July 2025 30 30 46.7% 0
August 2025 31 31 80.7% 0
September 2025 30 30 83.3% 0
October 2025 18 18 72.2% 0
November 2025 31 31 83.9% 0
December 2025 27 27 70.4% 0
January 2026 36 36 86.1% 0
February 2026 46 46 84.8% 0
March 2026 40 40 75.0% 0
April 2026 41 41 48.8% 0
May 2026 44 44 36.4% 0
June 2026 43 43 39.5% 0
July 2026 43 43 44.2% 0

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