FlightRecord

Southwest Airlines: On-Time Performance & Delay Statistics

Data through May 2026

Southwest Airlines performs about in line with the industry: 79% of flights on time against a national 78%, 0.8% cancelled, and an average delay of 13 minutes when late. That puts it mid-pack — #8 of 15 US reporting carriers.

On-time
79%
arrived <15 min late
Avg delay
13 min
Cancelled
0.8%
Diverted
0.2%
Flights/12mo
1,392,049
Routes
2,100
Airports
111

Monthly on-time trend

Monthly on-time percentage for Southwest Airlines50%75%100%June 2024: 74% on-time (123,817 flights)74Jun 2024July 2024: 71% on-time (127,642 flights)71August 2024: 80% on-time (118,338 flights)80September 2024: 85% on-time (112,561 flights)85Sep 2024October 2024: 87% on-time (119,251 flights)87November 2024: 87% on-time (112,591 flights)87December 2024: 80% on-time (116,276 flights)80Dec 2024January 2025: 85% on-time (105,307 flights)85February 2025: 83% on-time (100,199 flights)83March 2025: 82% on-time (122,432 flights)82Mar 2025April 2025: 81% on-time (117,622 flights)81May 2025: 77% on-time (119,819 flights)77June 2025: 72% on-time (122,348 flights)72Jun 2025July 2025: 71% on-time (125,677 flights)71August 2025: 78% on-time (114,519 flights)78September 2025: 83% on-time (110,361 flights)83Sep 2025October 2025: 77% on-time (121,588 flights)77November 2025: 80% on-time (113,938 flights)80December 2025: 75% on-time (118,075 flights)75Dec 2025January 2026: 85% on-time (104,002 flights)85February 2026: 82% on-time (100,783 flights)82March 2026: 74% on-time (122,298 flights)74Mar 2026April 2026: 78% on-time (117,814 flights)78May 2026: 72% on-time (120,646 flights)72June 2024: 0.3% cancelledJuly 2024: 0.7% cancelledAugust 2024: 0.9% cancelledSeptember 2024: 0.4% cancelledOctober 2024: 1.3% cancelledNovember 2024: 0.3% cancelledDecember 2024: 0.5% cancelledJanuary 2025: 2.9% cancelledFebruary 2025: 0.6% cancelledMarch 2025: 0.8% cancelledApril 2025: 0.5% cancelledMay 2025: 0.5% cancelledJune 2025: 0.6% cancelledJuly 2025: 1.3% cancelledAugust 2025: 0.4% cancelledSeptember 2025: 0.2% cancelledOctober 2025: 0.3% cancelledNovember 2025: 1.7% cancelledDecember 2025: 0.6% cancelledJanuary 2026: 2.6% cancelledFebruary 2026: 1.0% cancelledMarch 2026: 1.6% cancelledApril 2026: 0.3% cancelledMay 2026: 0.4% cancelled— cancelled % (0-5% scale)

Southwest Airlines’s most reliable routes

  1. LIHHNL96%
  2. KOAHNL96%
  3. LIHOAK96%
  4. ITOHNL95%
  5. KOALAS95%
  6. OGGLAS95%

Its most delay-prone routes

  1. BURSFO44%
  2. SFOAUS48%
  3. SEASTL50%
  4. SEADAL51%
  5. DCALAS51%
  6. AUSBOS52%

Best airports for Southwest Airlines

  1. ITOHilo95%
  2. LIHLihue95%
  3. KOAKona94%
  4. OGGKahului93%
  5. HNLHonolulu92%
  6. ICTWichita86%

Worst airports for Southwest Airlines

  1. STTCharlotte Amalie64%
  2. SFOSan Francisco65%
  3. SYRSyracuse66%
  4. CLTCharlotte67%
  5. SEASeattle68%
  6. DENDenver69%

Where Southwest Airlines flies most

RouteFlightsOn-timeAvg delay
HOUDAL8,21981%12 min
DALHOU8,21876%15 min
PHXDEN8,13376%15 min
DENPHX8,05274%15 min
SMFSAN7,65274%15 min
SANSMF7,65177%13 min
SJCSAN7,56275%13 min
SANSJC7,55477%13 min
LASSAN7,51766%19 min
SANLAS7,51076%14 min
BWIMCO7,29577%16 min
MCOBWI7,28578%14 min
LASPHX7,01078%12 min
PHXLAS7,00579%12 min
LASSMF6,97979%12 min
SMFLAS6,97881%11 min
OGGHNL6,68794%3 min
HNLOGG6,68694%3 min
LASDEN6,55874%16 min
DENLAS6,55074%16 min
LASSJC6,55082%11 min
LASOAK6,54276%14 min
OAKLAS6,54180%11 min
SJCLAS6,53682%11 min
SANPHX6,38177%13 min
PHXSAN6,37275%14 min
RNOLAS6,34983%11 min
LASRNO6,34879%11 min
BURLAS6,34781%12 min
LASBUR6,34479%12 min
DENDAL6,25273%16 min
DALDEN6,24474%16 min
OAKSAN6,10274%15 min
SANOAK6,09276%13 min
PHXDAL6,00479%12 min
DALPHX5,99478%13 min
LASDAL5,83875%14 min
DALLAS5,83779%13 min
BUROAK5,80687%8 min
OAKBUR5,79784%9 min
MDWPHX5,45678%13 min
PHXMDW5,44778%12 min
DALSAT5,41681%12 min
SATDAL5,41384%10 min
SMFBUR5,38284%9 min
BURSMF5,37387%7 min
MCODAL5,31874%16 min
SJCSNA5,31588%6 min
SNASJC5,31488%7 min
DALMCO5,28673%17 min

Frequently asked questions

Is Southwest Airlines usually on time?
Southwest Airlines arrived on time (within 15 minutes of schedule) on 79% of flights between 2024-06 and 2026-05, ranking 8 of 15 US airlines by on-time percentage. The national average over the same period was 78%.
How often does Southwest Airlines cancel flights?
0.8% of Southwest Airlines flights were cancelled in this period, at or below the national rate of 1.6%.
Which routes is Southwest Airlines most reliable on?
Southwest Airlines&rsquo;s best on-time record is on LIH–HNL, at 96% based on 3,883 flights in this period.
Has Southwest Airlines been getting better or worse?
Comparing the first and second half of this dataset, Southwest Airlines&rsquo;s on-time percentage has declined by about 4 percentage points.
Which airports does Southwest Airlines perform best and worst at?
Southwest Airlines is most reliable out of Hilo (ITO) at 95% on-time, and weakest out of Charlotte Amalie (STT) at 64%.

Airport hubs where this airline operates

Related guides

Based on 2,787,904 flights, 2024-062026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.