Historical on-time performance
Boston to Detroit
632 miData through May 2026Source: US DOT · BTS
Flights on BOS–DTW arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled2.1%of scheduled flights
based on 2,473 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Spirit AirlinesOn-time90%Medianon timep9010 minCancel0.0%Flights61
- Delta Air LinesbestOn-time77%Medianon timep9050 minCancel2.1%Flights1,714
- JetBlue AirwaysOn-time70%Medianon timep9065 minCancel2.1%Flights698
Why flights run late
Delay causes
- Airline35%
- Weather2%
- Air traffic (NAS)16%
- Late aircraft47%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline37%
- Weather45%
- Air traffic (NAS)18%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 51 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 BOS → 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 — 89% on time.
- Mornings89% on time · p90 10 min · 3,170 flights
- Middays81% on time · p90 40 min · 1,439 flights
- Evenings69% on time · p90 70 min · 1,460 flights
- Afternoons67% on time · p90 75 min · 1,106 flights
- Overnights60% on time · p90 90 min · 860 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 82% on time.
- Wednesdays82% on time · p90 40 min · 1,122 flights
- Saturdays81% on time · p90 40 min · 1,011 flights
- Tuesdays81% on time · p90 35 min · 1,119 flights
- Thursdays78% on time · p90 45 min · 1,198 flights
- Mondays76% on time · p90 60 min · 1,197 flights
- Fridays75% on time · p90 50 min · 1,201 flights
- Sundays73% on time · p90 60 min · 1,187 flights
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