Historical on-time performance
Houston to Tucson
936 miData through Dec 2025Source: US DOT · BTS
Flights on IAH–TUS arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights
based on 181 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time78%Medianon timep9035 minCancel1.7%Flights181
Why flights run late
Delay causes
- Airline41%
- Weather6%
- Air traffic (NAS)21%
- Late aircraft32%
- Security0%
Most delay minutes here are attributed to Airline.
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 (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 86% on time.
- Mornings86% on time · p90 15 min · 440 flights
- Middays77% on time · p90 50 min · 132 flights · limited
- Overnights70% on time · p90 40 min · 447 flights
- Evenings67% on time · p90 70 min · 458 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 81% on time.
- Tuesdays81% on time · p90 40 min · 218 flights
- Saturdays78% on time · p90 30 min · 184 flights · limited
- Mondays76% on time · p90 40 min · 215 flights
- Wednesdays73% on time · p90 40 min · 222 flights
- Fridays72% on time · p90 35 min · 216 flights
- Sundays70% on time · p90 65 min · 210 flights
- Thursdays70% on time · p90 60 min · 212 flights
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