Historical on-time performance
Houston to Tucson
936 miData through May 2026Source: US DOT · BTS
Flights on IAH–TUS arrive on time 84% of the time over the last 12 months.
On-time rate84%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled2.5%of scheduled flights
based on 120 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time84%Medianon timep9030 minCancel2.5%Flights120
Why flights run late
Delay causes
- Airline20%
- Weather4%
- Air traffic (NAS)2%
- Late aircraft74%
- Security0%
Most delay minutes here are attributed to Late aircraft.
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 IAH → TUS
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 — 89% on time.
- Mornings89% on time · p90 15 min · 379 flights
- Middays77% on time · p90 50 min · 119 flights · limited
- Overnights71% on time · p90 50 min · 459 flights
- Evenings68% on time · p90 70 min · 397 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 82% on time.
- Tuesdays82% on time · p90 35 min · 199 flights · limited
- Saturdays78% on time · p90 45 min · 169 flights · limited
- Mondays77% on time · p90 50 min · 195 flights · limited
- Wednesdays76% on time · p90 35 min · 209 flights
- Fridays76% on time · p90 35 min · 201 flights
- Thursdays72% on time · p90 60 min · 194 flights · limited
- Sundays70% on time · p90 75 min · 190 flights · limited
Keep exploring