Historical on-time performance
Houston to Dallas
217 miData through Dec 2025Source: US DOT · BTS
No flights recorded for last 12 months on this route.
By airline
How each carrier compares
No airline figures for this window yet.
Why flights run late
Delay causes
Delay-cause data appears once delayed flights are recorded for this window.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly IAH → DAL
All airlines · rolling 36 months (2023-01 .. 2025-12).
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 · 779 flights
- Middays84% on time · p90 20 min · 425 flights
- Afternoons80% on time · p90 40 min · 398 flights
- Overnights73% on time · p90 110 min · 79 flights · limited
- Evenings71% on time · p90 50 min · 551 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 90% on time.
- Saturdays90% on time · p90 10 min · 213 flights
- Mondays85% on time · p90 20 min · 352 flights
- Fridays82% on time · p90 30 min · 350 flights
- Sundays81% on time · p90 35 min · 269 flights
- Tuesdays80% on time · p90 30 min · 349 flights
- Wednesdays80% on time · p90 30 min · 351 flights
- Thursdays79% on time · p90 25 min · 348 flights
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