Historical on-time performance
Detroit to Washington
383 miData through Dec 2025Source: US DOT · BTS
Flights on DTW–IAD arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 921 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Republic AirwaysOn-time75%Medianon timep9060 minCancel0.0%Flights44
- SkyWest AirlinesOn-time72%Medianon timep9070 minCancel0.7%Flights877
Why flights run late
Delay causes
- Airline71%
- Weather12%
- Air traffic (NAS)14%
- Late aircraft2%
- Security1%
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 DTW → IAD
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 72% to 86% on time.
- Mornings86% on time · p90 25 min · 738 flights
- Evenings82% on time · p90 25 min · 101 flights · limited
- Middays82% on time · p90 40 min · 839 flights
- Overnights79% on time · p90 55 min · 997 flights
- Afternoons72% on time · p90 60 min · 1,092 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 83% on time.
- Tuesdays83% on time · p90 30 min · 551 flights
- Wednesdays81% on time · p90 40 min · 552 flights
- Saturdays81% on time · p90 45 min · 478 flights
- Thursdays79% on time · p90 40 min · 551 flights
- Fridays79% on time · p90 45 min · 549 flights
- Mondays75% on time · p90 65 min · 545 flights
- Sundays74% on time · p90 60 min · 541 flights
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