BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
DSM→PHL

Des Moines, IA (DSM) to Philadelphia, PA (PHL) flight delay odds

78.4% of 338 official scheduled DSM-to-PHL flights arrived on time; 13.0% arrived at least 30 minutes late and 3.6% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
78.4%arrived on time
13.0%30+ min late
3.6%cancelled
338scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.0%all scheduled flights
120+ minutes late3.8%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+13.5 mincompleted flights

Which departure time was most reliable for DSM to PHL?

Among qualifying DSM-to-PHL departure window results, Early morning had the highest on-time rate: 85.3% of 163 flights. Afternoon was lowest at 72.5% across 171 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning16385.3%6.1%3.1%
Afternoon17172.5%18.7%4.1%

Which weekday was most reliable for DSM to PHL?

Among qualifying DSM-to-PHL weekday results, Friday had the highest on-time rate: 85.4% of 48 flights. Thursday was lowest at 67.9% across 53 flights.

DayFlightsOn time30+ minCancelled
Monday4680.4%13.0%2.2%
Tuesday4783.0%10.6%2.1%
Wednesday4479.5%6.8%4.5%
Thursday5367.9%26.4%1.9%
Friday4885.4%8.3%4.2%
Saturday4778.7%6.4%8.5%
Sunday5375.5%17.0%1.9%

Which airline was most reliable for DSM to PHL?

Among qualifying DSM-to-PHL airline results, Republic Airways had the highest on-time rate: 80.3% of 71 flights. PSA Airlines was lowest at 79.6% across 255 flights.

AirlineFlightsOn time30+ minCancelled
PSA Airlines25579.6%12.2%3.1%
Republic Airways7180.3%9.9%4.2%
Allegiant Air1241.7%50.0%8.3%

Which month was most reliable for DSM to PHL?

Among qualifying DSM-to-PHL month results, September 2025 had the highest on-time rate: 88.3% of 60 flights. May 2026 was lowest at 65.4% across 26 flights.

MonthFlightsOn time30+ minCancelled
July 20255972.9%11.9%8.5%
August 20256280.6%16.1%1.6%
September 20256088.3%8.3%1.7%
October 20256282.3%8.1%0.0%
May 20262665.4%15.4%3.8%
June 20266674.2%18.2%6.1%

What drove DSM to PHL delay minutes?

Airline was the largest recorded DSM-to-PHL delay category, accounting for 55.1% of 7,841 BTS-attributed delay minutes during July 2025–June 2026.

Airline55.1%
Late aircraft21.4%
National airspace10.0%
Weather13.5%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.