PSA vs Southwest: On-Time Performance Compared

Last 12 months · Aug 2025 – Jul 2026

Data through July 2026 · Last updated October 18, 2026

Over the last 12 months 76.4% of Southwest flights arrived on time, compared with 74.1% for PSA.

Southwest cancelled fewer flights (0.9% vs 4.3%), and late flights averaged 94 minutes late on PSA vs 53 on Southwest.

On the 24 routes both airlines fly regularly, PSA had the better on-time record on 10 and Southwest on 14.

PSA vs Southwest: key numbers

Last 12 months, all flights each airline operated.

PSASouthwest

On-time arrivals74.1%76.4%

On-time departures74.6%71.8%

Cancelled4.3%0.9%

Diverted0.3%0.2%

On-time arrival % each month, last 24 months.

PSASouthwest

60%70%80%90%

Aug ’24Nov ’24Feb ’25May ’25Aug ’25Nov ’25Feb ’26May ’26

Share of each airline’s reported delay minutes by cause, last 12 months.

PSASouthwest

Airline (carrier)29.2%28.4%

Weather8.1%2.3%

Air traffic system (NAS)12.8%17.9%

Security0.2%0.3%

Late-arriving aircraft49.7%51.1%

24 routes where each airline had at least 100 completed flights in the last 12 months. Better on-time rate in bold.

Route	PSA on time	Southwest on time	PSA flights	Southwest flights
DCA → ATL	67.4%	79.2%	1,097	1,106
ATL → DCA	74.0%	71.8%	1,094	1,107
BNA → DCA	66.8%	70.3%	390	1,678
DCA → BNA	59.9%	75.1%	391	1,677
STL → DCA	73.7%	73.0%	595	1,403
DCA → STL	67.9%	75.4%	594	1,402
PVD → DCA	67.5%	77.9%	1,011	670
DCA → PVD	69.8%	75.6%	1,010	670
DCA → MCI	68.4%	72.2%	568	998
MCI → DCA	73.2%	73.0%	568	997
BNA → PHL	76.8%	68.5%	464	934
PHL → BNA	75.3%	76.7%	464	934
DCA → MKE	70.5%	82.9%	659	681
MKE → DCA	74.2%	74.2%	659	680
DCA → MSY	72.0%	71.8%	586	704
MSY → DCA	68.1%	67.2%	586	704
BNA → CLT	77.1%	74.2%	496	746
CLT → BNA	80.3%	73.5%	496	746
PHL → STL	76.0%	78.6%	137	726
STL → PHL	85.2%	75.0%	137	725
DCA → CMH	72.2%	78.9%	435	349
CMH → DCA	69.4%	59.9%	433	350
DCA → OKC	63.3%	64.9%	212	328
OKC → DCA	63.0%	79.0%	212	328