Historical on-time performance
Des Moines to Philadelphia
972 miData through Dec 2025Source: US DOT · BTS
Flights on DSM–PHL arrive on time 79% of the time over the last 12 months.
On-time rate79%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled3.1%of scheduled flights
based on 261 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- PSA AirlinesOn-time79%Medianon timep9035 minCancel3.1%Flights261
Why flights run late
Delay causes
- Airline51%
- Weather14%
- Air traffic (NAS)9%
- Late aircraft27%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly DSM → PHL
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 84% on time.
- Mornings84% on time · p90 15 min · 147 flights · limited
- Middays73% on time · p90 50 min · 150 flights · limited
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