Historical on-time performance
Raleigh-durham to Detroit
501 miData through May 2026Source: US DOT · BTS
Flights on RDU–DTW arrive on time 86% of the time over the last 12 months.
On-time rate86%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights
based on 1,341 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time86%Medianon timep9025 minCancel1.3%Flights1,341
Why flights run late
Delay causes
- Airline31%
- Weather1%
- Air traffic (NAS)18%
- Late aircraft50%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline59%
- Weather41%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 17 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 RDU → DTW
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 — 92% on time.
- Mornings92% on time · p90 5 min · 1,875 flights
- Middays86% on time · p90 20 min · 1,272 flights
- Evenings78% on time · p90 50 min · 1,241 flights
- Afternoons72% on time · p90 45 min · 178 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 81% to 90% on time.
- Tuesdays90% on time · p90 10 min · 629 flights
- Wednesdays87% on time · p90 20 min · 627 flights
- Thursdays86% on time · p90 25 min · 702 flights
- Saturdays86% on time · p90 20 min · 541 flights
- Mondays86% on time · p90 20 min · 687 flights
- Fridays85% on time · p90 30 min · 684 flights
- Sundays81% on time · p90 40 min · 700 flights
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