Historical on-time performance
Tucson to Houston
936 miData through May 2026Source: US DOT · BTS
Flights on TUS–IAH arrive on time 88% of the time over the last 12 months.
On-time rate88%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled2.5%of scheduled flights
based on 119 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time88%Medianon timep9010 minCancel2.5%Flights119
Why flights run late
Delay causes
- Airline34%
- Weather0%
- Air traffic (NAS)66%
- Late aircraft0%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 3 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 TUS → 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 — 90% on time.
- Mornings90% on time · p90 10 min · 860 flights
- Middays84% on time · p90 25 min · 479 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 85% to 92% on time.
- Wednesdays92% on time · p90 10 min · 204 flights
- Saturdays91% on time · p90 10 min · 175 flights · limited
- Fridays88% on time · p90 15 min · 195 flights · limited
- Mondays87% on time · p90 15 min · 196 flights · limited
- Tuesdays86% on time · p90 15 min · 200 flights
- Thursdays86% on time · p90 20 min · 200 flights
- Sundays85% on time · p90 25 min · 188 flights · limited
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