Historical on-time performance
Phoenix to Des Moines
1,149 miData through May 2026Source: US DOT · BTS
Flights on PHX–DSM arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights
based on 781 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesbestOn-time84%Medianon timep9020 minCancel1.3%Flights311
- American AirlinesOn-time75%Medianon timep9035 minCancel2.0%Flights440
- Southwest AirlinesOn-time60%Median5 minp9055 minCancel0.0%Flights30
Why flights run late
Delay causes
- Airline43%
- Weather3%
- Air traffic (NAS)14%
- Late aircraft39%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather92%
- Air traffic (NAS)8%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 13 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly PHX → DSM
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 86% on time.
- Mornings86% on time · p90 15 min · 828 flights
- Middays82% on time · p90 25 min · 1,061 flights
- Afternoons77% on time · p90 35 min · 138 flights · limited
- Overnights73% on time · p90 55 min · 215 flights
- Evenings69% on time · p90 60 min · 676 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 82% on time.
- Tuesdays82% on time · p90 40 min · 365 flights
- Wednesdays81% on time · p90 25 min · 374 flights
- Thursdays81% on time · p90 35 min · 449 flights
- Fridays80% on time · p90 30 min · 445 flights
- Sundays79% on time · p90 35 min · 461 flights
- Saturdays77% on time · p90 35 min · 381 flights
- Mondays76% on time · p90 40 min · 443 flights
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