Historical on-time performance
Dallas to Houston
217 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
- Airline41%
- Weather53%
- Air traffic (NAS)6%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 175 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 DAL → IAH
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 67% to 89% on time.
- Mornings89% on time · p90 10 min · 548 flights
- Afternoons84% on time · p90 25 min · 262 flights
- Middays82% on time · p90 25 min · 323 flights
- Evenings67% on time · p90 65 min · 306 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 84% on time.
- Tuesdays84% on time · p90 30 min · 239 flights
- Mondays83% on time · p90 25 min · 235 flights
- Fridays80% on time · p90 35 min · 237 flights
- Thursdays79% on time · p90 35 min · 235 flights
- Wednesdays78% on time · p90 35 min · 241 flights
- Saturdays78% on time · p90 30 min · 156 flights · limited
- Sundays75% on time · p90 40 min · 186 flights · limited
Keep exploring