Historical on-time performance
Houston to Dallas
216 miData through May 2026Source: 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.
When flights don't go
Why flights were cancelled
- Airline42%
- Weather53%
- Air traffic (NAS)5%
- Security1%
Most cancellations here are attributed to Weather. Shares are among 217 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 IAH → DAL
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 — 93% on time.
- Mornings93% on time · p90 5 min · 522 flights
- Middays83% on time · p90 20 min · 324 flights
- Afternoons81% on time · p90 40 min · 268 flights
- Evenings68% on time · p90 55 min · 392 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 89% on time.
- Saturdays89% on time · p90 10 min · 150 flights · limited
- Mondays84% on time · p90 25 min · 243 flights
- Wednesdays82% on time · p90 30 min · 241 flights
- Fridays82% on time · p90 30 min · 245 flights
- Tuesdays81% on time · p90 30 min · 239 flights
- Sundays80% on time · p90 40 min · 187 flights · limited
- Thursdays79% on time · p90 40 min · 243 flights
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