Delta vs PSA: 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 81.5% of Delta flights arrived on time, compared with 74.1% for PSA.

Delta cancelled fewer flights (1.7% vs 4.3%), and late flights averaged 71 minutes late on Delta vs 94 on PSA.

On the 14 routes both airlines fly regularly, Delta had the better on-time record on 11 and PSA on 3.

Delta vs PSA: key numbers

Last 12 months, all flights each airline operated.

DeltaPSA

On-time arrivals81.5%74.1%

On-time departures81.9%74.6%

Cancelled1.7%4.3%

Diverted0.3%0.3%

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

DeltaPSA

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.

DeltaPSA

Airline (carrier)44.7%29.2%

Weather4.1%8.1%

Air traffic system (NAS)21.6%12.8%

Security0.1%0.2%

Late-arriving aircraft29.5%49.7%

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

Route	Delta on time	PSA on time	Delta flights	PSA flights
DCA → ATL	80.7%	67.4%	3,842	1,097
ATL → DCA	67.8%	74.0%	3,842	1,094
ATL → CLT	80.4%	80.4%	2,589	1,334
CLT → ATL	86.7%	75.4%	2,589	1,332
PHL → ATL	84.3%	81.8%	3,017	859
ATL → PHL	76.3%	80.8%	3,016	859
DCA → DTW	79.6%	68.2%	1,741	953
DTW → DCA	69.1%	69.7%	1,741	952
DTW → PHL	80.1%	78.4%	1,578	921
PHL → DTW	83.0%	75.2%	1,578	920
DCA → MSP	78.7%	65.1%	1,698	504
MSP → DCA	76.0%	71.4%	1,698	504
PHL → MSP	82.7%	73.8%	1,212	583
MSP → PHL	81.7%	77.8%	1,212	581