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US airline · WN

Southwest Airlines on-time record

Southwest Airlines (WN) flew 1,389,951 US domestic flights from August 2025 to July 2026. 76.4% arrived within 15 minutes of schedule, 1.2 points below the US average of 77.6%; 0.9% were cancelled, and flights arrived about 7 minutes late on average. That ranks Southwest Airlines seventh of 12 US airlines with a full year of figures.

76.4%
on time (within 15 min)
0.9%
cancelled
13.7%
more than 30 min late
+7 min
average arrival vs schedule

1,389,951 flights, 5,317 flight numbers, 2,012 routes and 108 airports, August 2025 to July 2026. Source: US Bureau of Transportation Statistics, public domain.

Southwest Airlines on-time record by month

MonthOn timeCancelledFlights
July 202669.2%1.1%124,994
June 202666%0.6%120,933
May 202672.4%0.4%120,646
April 202677.6%0.3%117,814
March 202674.4%1.6%122,298
February 202681.7%1%100,783
January 202684.8%2.6%104,002
December 202575.4%0.6%118,075
November 202579.8%1.7%113,938
October 202577.4%0.3%121,588
September 202583%0.2%110,361
August 202578.6%0.4%114,519

Each month links to that month's US punctuality report, with every airline ranked.

Where Southwest Airlines flies from most

  1. Denver (DEN)70%
  2. Las Vegas (LAS)74.2%
  3. Baltimore (BWI)77.5%
  4. Chicago Midway (MDW)75.1%
  5. Dallas Love Field (DAL)72.6%
  6. Phoenix Sky Harbor (PHX)73.8%
  7. Nashville (BNA)74.2%
  8. Orlando (MCO)72.7%
  9. Houston (HOU)76.6%
  10. St. Louis (STL)76.8%

Southwest Airlines' busiest routes

  1. Dallas to Houston74.9%
  2. Houston to Dallas81%
  3. Denver to Phoenix72.3%
  4. Phoenix to Denver72.7%
  5. Sacramento to San Diego69.6%
  6. San Diego to Sacramento74.7%
  7. Las Vegas to San Diego61.1%
  8. San Diego to Las Vegas73.9%
  9. San Diego to San Jose75%
  10. San Jose to San Diego69.1%

Most punctual busy routes

  1. Lihue to Las Vegas97.8%
  2. Kahului to Phoenix97.5%
  3. Kahului to Las Vegas96.7%
  4. Lihue to Oakland96.7%
  5. Kahului to Oakland95.9%
  6. Kona to Honolulu95.6%
  7. Kona to Las Vegas95.3%
  8. Lihue to Honolulu95.2%

Least punctual busy routes

  1. Burbank to San Francisco39.1%
  2. San Francisco to Austin43.5%
  3. San Francisco to St. Louis45.4%
  4. Las Vegas to San Francisco46.2%
  5. Chicago to San Francisco48.1%
  6. San Francisco to San Diego50.5%
  7. Denver to San Francisco50.8%
  8. San Francisco to Burbank51.1%

Most punctual flights

  1. WN494%
  2. WN106093.7%
  3. WN162893.4%
  4. WN463792.9%
  5. WN1092.9%
  6. WN429692.2%
  7. WN457491.7%
  8. WN369591.6%

Least punctual flights

  1. WN365352.2%
  2. WN391752.5%
  3. WN411153.4%
  4. WN364955.3%
  5. WN354055.3%
  6. WN457555.6%
  7. WN363856.6%
  8. WN141856.8%

On-time shares are for August 2025 to July 2026. Routes with at least 300 flights and flight numbers with at least 200 flights in the period.

Questions and answers

Is Southwest Airlines usually on time?
76.4% of Southwest Airlines' 1,389,951 US domestic flights from August 2025 to July 2026 arrived within 15 minutes of schedule, 1.2 points below the US average of 77.6%. That ranks it seventh of 12 US airlines with a full year of figures. Its flights arrived about 7 minutes late on average.
How often does Southwest Airlines cancel flights?
0.9% of Southwest Airlines' scheduled flights were cancelled from August 2025 to July 2026. That is the second lowest cancellation rate of 12 US airlines with a full year of figures.
When is Southwest Airlines most and least punctual?
In the period, Southwest Airlines' best month was January 2026 (84.8% on time) and its worst was June 2026 (66%).
What is Southwest Airlines' most punctual busy route?
Lihue to Las Vegas: 97.8% of 365 flights on time from August 2025 to July 2026, among Southwest Airlines routes with at least 300 flights.
Where does Southwest Airlines fly from most?
By departures from August 2025 to July 2026: Denver (DEN), 88,450; Las Vegas (LAS), 86,313; Baltimore (BWI), 72,159.

Compare Southwest Airlines with every other US airline in the US airline on-time league table, or read how TripStow measures punctuality.

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