Historical on-time performance
Houston to Santa Ana
1,347 miData through May 2026Source: US DOT · BTS
Flights on IAH–SNA arrive on time 86% of the time over the last 12 months.
On-time rate86%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights
based on 1,094 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time86%Medianon timep9020 minCancel0.2%Flights1,094
Why flights run late
Delay causes
- Airline37%
- Weather18%
- Air traffic (NAS)14%
- Late aircraft32%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline50%
- Weather50%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 2 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 → SNA
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 — 87% on time.
- Mornings87% on time · p90 20 min · 1,096 flights
- Evenings82% on time · p90 30 min · 593 flights
- Middays82% on time · p90 40 min · 988 flights
- Overnights76% on time · p90 30 min · 844 flights
- Afternoons71% on time · p90 75 min · 139 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 86% on time.
- Tuesdays86% on time · p90 20 min · 525 flights
- Wednesdays84% on time · p90 25 min · 526 flights
- Mondays82% on time · p90 35 min · 523 flights
- Fridays82% on time · p90 30 min · 530 flights
- Saturdays81% on time · p90 25 min · 500 flights
- Sundays78% on time · p90 35 min · 527 flights
- Thursdays78% on time · p90 35 min · 529 flights
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