Historical on-time performance
Detroit to Houston
1,075 miData through Dec 2025Source: US DOT · BTS
Flights on DTW–IAH 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)
Cancelled1.1%of scheduled flights
based on 2,105 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.
- Spirit AirlinesOn-time79%Medianon timep9040 minCancel0.7%Flights565
- United AirlinesOn-time81%Medianon timep9035 minCancel2.8%Flights246
- Delta Air LinesOn-time77%Medianon timep9040 minCancel0.9%Flights1,294
Why flights run late
Delay causes
- Airline46%
- Weather4%
- Air traffic (NAS)34%
- Late aircraft16%
- Security0%
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 → IAH
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 84% on time.
- Mornings84% on time · p90 25 min · 2,605 flights
- Middays81% on time · p90 35 min · 1,272 flights
- Evenings73% on time · p90 50 min · 324 flights
- Overnights73% on time · p90 55 min · 1,034 flights
- Afternoons72% on time · p90 60 min · 1,786 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 81% on time.
- Tuesdays81% on time · p90 30 min · 973 flights
- Saturdays80% on time · p90 35 min · 853 flights
- Wednesdays80% on time · p90 35 min · 1,001 flights
- Mondays78% on time · p90 35 min · 1,044 flights
- Sundays78% on time · p90 40 min · 1,027 flights
- Thursdays76% on time · p90 45 min · 1,057 flights
- Fridays76% on time · p90 55 min · 1,066 flights
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