On-Time Report

Airlines › Southwest Airlines › December 2024

Carrier month · December 2024

Southwest Airlines in December 2024

79.9%arrived on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In December 2024, Southwest Airlines (WN) reported 116,276 scheduled domestic flights. 79.9% arrived on time, 0.5% were cancelled and 0.2% diverted.

All reporting carriers together recorded 78.1% on time and 0.7% cancelled that month, so the carrier was 1.8 points above the combined figure.

A year earlier, in December 2023, it reported 127,773 flights with 82.1% on time: a change of −2.2 points.

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 56%, air carrier 27% and national aviation system 15%.

Every scheduled domestic flight reported by Southwest Airlines in December 2024.

December 2024 against a year earlier, the carrier's year and all carriers

MeasureDec 2024Dec 2023WN, 12 months to Jul 2026All carriers, Dec 2024
Arrived on time79.9%82.1%75.5%78.1%
Departed on time76.0%78.3%71.2%77.8%
Cancelled0.5%0.6%0.9%0.7%
Average arrival delay4.7 min1.9 min6.8 min7.1 min
Scheduled flights a day3,8764,2593,80819,686
Scheduled flights116,276127,7731,389,951590,581

104 airports and 1,598 routes had WN flights that month.

Busiest airports that month

AirportDeparturesOn timeAvg arrival delayCancelled
DEN Denver7,66980.2%3.9 min0.2%
LAS Las Vegas7,11781.3%2.1 min0.4%
DAL Dallas6,03973.6%15.4 min0.8%
BWI Baltimore5,97177.1%4.4 min0.3%
PHX Phoenix5,91679.5%5.1 min0.3%
MDW Chicago5,40179.4%2.6 min0.5%
BNA Nashville4,30180.9%2.1 min0.2%
HOU Houston4,27177.9%9.1 min0.4%
MCO Orlando3,70780.1%4.6 min0.2%
STL St. Louis3,46681.0%2.7 min0.3%
AUS Austin3,15678.6%5.7 min0.4%
SAN San Diego2,83566.8%19.7 min3.6%
OAK Oakland2,71381.5%2.7 min0.9%
SMF Sacramento2,56977.2%8.5 min1.0%
ATL Atlanta2,50380.2%4.8 min0.2%

By scheduled departure hour

On-time share:under 62%6270768288% and over
Share of WN flights that arrived on time, by scheduled departure hour (local time at each origin), December 2024.

Delay causes

BTS cause categoryShare of delay minutesAll carriers, Dec 2024Minutes
Air carrier26.6%34.3%350,339
Late-arriving aircraft55.9%40.2%736,564
National Aviation System14.9%17.8%196,968
Extreme weather2.3%7.5%30,541
Security0.3%0.2%3,303
1,317,715 delay minutes on 22,464 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.
← November 2024January 2025 →

Questions and answers

What share of Southwest Airlines flights were on time in December 2024?

79.9% of 116,276 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 78.1% that month.

How does that compare with a year earlier?

In December 2023 the carrier reported 127,773 flights with 82.1% on time and 0.6% cancelled, against 79.9% and 0.5% in December 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2024; public domain. Domestic scheduled flights, totals and averages only. The site's data runs through July 2026. Full record for Southwest Airlines · methodology · corrections.