Historical on-time performance
Detroit to Houston
1,075 miData through May 2026Source: US DOT · BTS
Flights on DTW–IAH arrive on time 79% of the time over the last 12 months.
On-time rate79%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights
based on 1,899 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time84%Medianon timep9020 minCancel2.4%Flights212
- Delta Air LinesOn-time79%Medianon timep9040 minCancel1.0%Flights1,321
- Spirit AirlinesOn-time78%Medianon timep9045 minCancel1.4%Flights366
Why flights run late
Delay causes
- Airline47%
- Weather3%
- Air traffic (NAS)36%
- Late aircraft14%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline48%
- Weather52%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 23 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 DTW → IAH
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 — 84% on time.
- Mornings84% on time · p90 25 min · 2,525 flights
- Middays81% on time · p90 35 min · 1,264 flights
- Overnights72% on time · p90 60 min · 1,083 flights
- Evenings72% on time · p90 60 min · 333 flights
- Afternoons72% on time · p90 60 min · 1,676 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 81% on time.
- Tuesdays81% on time · p90 30 min · 936 flights
- Wednesdays80% on time · p90 35 min · 961 flights
- Saturdays79% on time · p90 35 min · 859 flights
- Mondays77% on time · p90 40 min · 1,022 flights
- Sundays77% on time · p90 40 min · 1,015 flights
- Thursdays76% on time · p90 45 min · 1,034 flights
- Fridays75% on time · p90 55 min · 1,054 flights
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