Historical on-time performance
Los Angeles to Houston
Flights on LAX–IAH arrive on time 84% of the time over the last 12 months.
based on 5,027 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- United AirlinesOn-time86%Medianon timep9020 minCancel0.4%Flights3,394
- Delta Air LinesOn-time85%Medianon timep9025 minCancel1.2%Flights646
- SkyWest AirlinesOn-time82%Medianon timep9030 minCancel0.3%Flights381
- Spirit AirlinesOn-time76%Medianon timep9050 minCancel1.1%Flights453
- Frontier AirlinesOn-time58%Median5 minp9090 minCancel2.0%Flights153
Why flights run late
Delay causes
- Airline36%
- Weather1%
- Air traffic (NAS)30%
- Late aircraft32%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline45%
- Weather55%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 29 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 LAX → 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 — 89% on time.
- Mornings89% on time · p90 10 min · 4,768 flights
- Early mornings88% on time · p90 15 min · 1,525 flights
- Overnights82% on time · p90 40 min · 308 flights
- Middays81% on time · p90 30 min · 4,449 flights
- Evenings81% on time · p90 35 min · 2,949 flights
- Afternoons79% on time · p90 40 min · 2,134 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 82% to 87% on time.
- Wednesdays87% on time · p90 20 min · 2,275 flights
- Tuesdays86% on time · p90 20 min · 2,229 flights
- Thursdays85% on time · p90 25 min · 2,371 flights
- Mondays83% on time · p90 25 min · 2,387 flights
- Saturdays83% on time · p90 30 min · 2,129 flights
- Fridays82% on time · p90 30 min · 2,383 flights
- Sundays82% on time · p90 30 min · 2,359 flights
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