Historical on-time performance
Des Moines to Washington
897 miData through Dec 2025Source: US DOT · BTS
Flights on DSM–DCA arrive on time 70% of the time over the last 12 months.
On-time rate70%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled6.9%of scheduled flights
based on 452 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time56%Medianon timep9085 minCancel4.7%Flights43
- PSA AirlinesbestOn-time72%Medianon timep9040 minCancel7.1%Flights409
Why flights run late
Delay causes
- Airline30%
- Weather10%
- Air traffic (NAS)24%
- Late aircraft36%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly DSM → DCA
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 69% to 79% on time.
- Mornings79% on time · p90 25 min · 1,041 flights
- Evenings79% on time · p90 35 min · 80 flights · limited
- Middays78% on time · p90 40 min · 777 flights
- Afternoons69% on time · p90 50 min · 354 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 81% on time.
- Sundays81% on time · p90 25 min · 328 flights
- Tuesdays79% on time · p90 30 min · 330 flights
- Mondays78% on time · p90 40 min · 329 flights
- Wednesdays77% on time · p90 40 min · 331 flights
- Thursdays77% on time · p90 35 min · 322 flights
- Saturdays74% on time · p90 45 min · 288 flights
- Fridays73% on time · p90 30 min · 324 flights
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