Historical on-time performance
Santa Ana to Houston
1,346 miData through Dec 2025Source: US DOT · BTS
Flights on SNA–IAH arrive on time 87% of the time over the last 12 months.
On-time rate87%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 1,170 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time87%Medianon timep9015 minCancel0.5%Flights1,170
Why flights run late
Delay causes
- Airline21%
- Weather0%
- Air traffic (NAS)29%
- Late aircraft50%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SNA → IAH
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 — 93% on time.
- Mornings93% on time · p90 5 min · 1,268 flights
- Middays83% on time · p90 30 min · 1,613 flights
- Afternoons81% on time · p90 40 min · 931 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 83% to 89% on time.
- Saturdays89% on time · p90 15 min · 547 flights
- Tuesdays87% on time · p90 15 min · 550 flights
- Wednesdays87% on time · p90 15 min · 551 flights
- Thursdays86% on time · p90 20 min · 545 flights
- Fridays85% on time · p90 25 min · 549 flights
- Mondays84% on time · p90 30 min · 548 flights
- Sundays83% on time · p90 30 min · 522 flights
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