FlightRecord

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

Data through July 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
0.5%
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%August 2024: 89% on-time (111 flights)89Aug 2024September 2024: 96% on-time (90 flights)96October 2024: 93% on-time (93 flights)93November 2024: 90% on-time (89 flights)90Nov 2024December 2024: 76% on-time (118 flights)76January 2025: 90% on-time (120 flights)90February 2025: 95% on-time (108 flights)95Feb 2025March 2025: 93% on-time (118 flights)93April 2025: 94% on-time (90 flights)94May 2025: 80% on-time (93 flights)80May 2025June 2025: 80% on-time (90 flights)80July 2025: 75% on-time (93 flights)75August 2025: 82% on-time (93 flights)82Aug 2025September 2025: 92% on-time (90 flights)92October 2025: 96% on-time (93 flights)96November 2025: 85% on-time (89 flights)85Nov 2025December 2025: 89% on-time (93 flights)89January 2026: 96% on-time (93 flights)96February 2026: 92% on-time (84 flights)92Feb 2026March 2026: 83% on-time (93 flights)83April 2026: 90% on-time (90 flights)90May 2026: 89% on-time (93 flights)89May 2026June 2026: 80% on-time (90 flights)80July 2026: 77% on-time (91 flights)77

Best time to fly from SNA to IAH

Aim for departures around 10 a.m. (96% on-time); avoid 11 a.m. departures (66%).

On-time percentage by scheduled departure hour, SNA to IAH6 a.m.: 89% on-time (234 flights)67 a.m.: 92% on-time (96 flights)78 a.m.: 94% on-time (533 flights)810 a.m.: 96% on-time (207 flights)1011 a.m.: 66% on-time (120 flights)1112 p.m.: 85% on-time (639 flights)122 p.m.: 74% on-time (65 flights)143 p.m.: 82% on-time (535 flights)15scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday86%14 min
Tuesdaybest90%6 min
Wednesday89%8 min
Thursday87%12 min
Friday86%16 min
Saturday85%11 min
Sunday85%10 min

What causes delays on this route

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

  • Late-arriving aircraft40%
  • Airline operations26%
  • National airspace system33%
  • Weather2%

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 2024-07 and 2026-07. 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 (96% on-time), while departures around 11 a.m. have the worst (66%). 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?
0.5% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, 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 2,429 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.