FlightRecord

Santa Ana (SNA) to Houston (IAH): On-Time Performance

Data through May 2026

The calendar drives reliability on SNA–IAH. October 2025 flights landed on schedule 96% of the time, but July 2024 dropped to 71% — a gap of 25 points. Across the full period the route averages 87% on-time against a national 78%.

On-time
87%
arrived <15 min late
Avg delay
11 min
completed flights
Cancelled
0.6%
Flights/day
3.0
last 12 months
Duration
3h 15m
scheduled
Distance
1,346 mi

Monthly on-time trend

Monthly on-time percentage for SNA to IAH flights50%75%100%June 2024: 84% on-time (120 flights)84Jun 2024July 2024: 71% on-time (124 flights)71August 2024: 89% on-time (111 flights)89September 2024: 96% on-time (90 flights)96Sep 2024October 2024: 93% on-time (93 flights)93November 2024: 90% on-time (89 flights)90December 2024: 76% on-time (118 flights)76Dec 2024January 2025: 90% on-time (120 flights)90February 2025: 95% on-time (108 flights)95March 2025: 93% on-time (118 flights)93Mar 2025April 2025: 94% on-time (90 flights)94May 2025: 80% on-time (93 flights)80June 2025: 80% on-time (90 flights)80Jun 2025July 2025: 75% on-time (93 flights)75August 2025: 82% on-time (93 flights)82September 2025: 92% on-time (90 flights)92Sep 2025October 2025: 96% on-time (93 flights)96November 2025: 85% on-time (89 flights)85December 2025: 89% on-time (93 flights)89Dec 2025January 2026: 96% on-time (93 flights)96February 2026: 92% on-time (84 flights)92March 2026: 83% on-time (93 flights)83Mar 2026April 2026: 90% on-time (90 flights)90May 2026: 89% on-time (93 flights)89

Best time to fly from SNA to IAH

Aim for departures around 10 a.m. (95% on-time); avoid 11 a.m. departures (65%).

On-time percentage by scheduled departure hour, SNA to IAH6 a.m.: 89% on-time (237 flights)67 a.m.: 94% on-time (36 flights)78 a.m.: 94% on-time (559 flights)810 a.m.: 95% on-time (237 flights)1011 a.m.: 65% on-time (64 flights)1112 p.m.: 85% on-time (665 flights)122 p.m.: 73% on-time (62 flights)143 p.m.: 81% on-time (508 flights)15scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday87%13 min
Tuesdaybest92%5 min
Wednesday88%11 min
Thursday87%10 min
Friday86%16 min
Saturday86%11 min
Sunday86%9 min

What causes delays on this route

Share of total delay minutes by cause, as reported by carriers to the US DOT.

  • Late-arriving aircraft43%
  • Airline operations24%
  • National airspace system31%
  • Weather3%

Frequently asked questions

How often are flights from SNA to IAH delayed?
13% of SNA–IAH flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 11 minutes.
What is the best time of day to fly from SNA to IAH?
Departures around 10 a.m. have the best record (95% on-time), while departures around 11 a.m. have the worst (65%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
How long is the flight from SNA to IAH?
The scheduled SNA–IAH flight time averages 3h 15m over 1,346 miles. Actual arrival times vary — flights on this route land 15+ minutes late 13% of the time.
How often are SNA to IAH flights cancelled?
0.6% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
What is the worst month to fly from SNA to IAH?
July 2024 was the roughest month in this dataset, with only 71% of arrivals on time. The best was October 2025 at 96%. If your dates are flexible, that 25-point gap is worth planning around.

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Based on 2,368 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.