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Route · IAH → SNA · 2020–2025 BTS data

Houston to Santa Ana

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAH to SNA (Houston to Santa Ana) ranks #1847 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

84.6%
On-time
+5.6 pts
vs US avg
62 min
Delay when late
6,837
Flights
#1847 of 4927
Corpus placement

Cancelled

1.1%

Best Month

Dec 2025 97%

Worst Month

Jul 2024 64%

Distance

1,346 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 93 3 0 0 UA
Nov 2025 89 13 0 2 UA
Oct 2025 93 12 0 1 UA
Sep 2025 90 11 0 0 UA
Aug 2025 93 14 0 4 UA
Jul 2025 93 18 2 1 UA
Jun 2025 90 18 0 4 UA
May 2025 93 21 0 2 UA
Apr 2025 90 11 0 0 UA
Mar 2025 117 12 0 0 UA
Feb 2025 108 10 0 0 UA
Jan 2025 120 18 5 0 UA
Dec 2024 118 22 0 4 UA
Nov 2024 89 10 0 0 UA
Oct 2024 93 9 0 1 UA
Sep 2024 90 9 1 1 UA
Aug 2024 111 15 0 3 UA
Jul 2024 124 45 11 1 UA
Jun 2024 120 37 0 3 UA
May 2024 102 35 3 1 UA
Apr 2024 90 17 0 0 UA
Mar 2024 118 23 0 1 UA
Feb 2024 112 22 0 0 UA
Jan 2024 113 23 4 1 UA

IAH–SNA seasonal on-time pattern

Best: September (91.5%) · weakest: June (75.7%)

70%75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 85.4%

Strongest calendar month

September

91.5% on-time · ~94 flights/mo

Busiest calendar month

January

~107 flights/mo avg

Weakest calendar month

June

75.7% on-time · ~89 flights/mo

Cancellation Rate

1.1%

26 of 2,449 flights

Diversion Rate

1.2%

30 of 2,449 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

IAH - Houston

Full on-time, delay-cause, and seasonal performance for Houston, TX.

IAH on-time profile

SNA - Santa Ana

Full on-time, delay-cause, and seasonal performance for Santa Ana, CA.

SNA on-time profile

Compare the two airports

See IAH and SNA side by side on delays, cancellations, and reliability.

Compare IAH vs SNA

Origin-hub reliability standing

Mid-pack among IAH departures

From IAH, this corridor sits with 79 other 75–85% on-time routes out of 102 tracked departures, not the hub's reliability leaders (17 at ≥85%) and not the softest ( 6 below 75%). Destination: Santa Ana · fleet on-time rank #1365 of 4927.

What the Data Says About IAH to SNA

Bureau of Transportation Statistics records show Houston to Santa Ana (IAH to SNA) running a 84.6% on-time rate over 6,837 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 61.7 minutes. The 1,346-mile corridor is served by 1 carrier, and over the last 24 months 1.1% of 2,449 flights were cancelled, 1.2% diverted.

The monthly split is wide on this route: Dec 2025 posted the strongest performance at 97% on-time, while Jul 2024 came in at just 64% - a 33-point swing worth factoring into travel timing.

On the multi-year calendar, IAH–SNA peaks in September at 91.5% on-time while January carries the heaviest traffic (~107 flights per month) ; the softest month is June at 75.7%, a 15.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does IAH to SNA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, IAH to SNA ranks #1847 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from IAH to SNA? ▼
Flights from Houston to Santa Ana have a 84.6% on-time rate based on 6,837 flights. The average delay is 61.7 minutes. The best recent month was Dec 2025 with 97% on-time.
What is the cancellation rate for IAH to SNA? ▼
Over the last 24 months, 1.1% of flights on this route were cancelled (26 of 2,449 flights) and 1.2% were diverted.
How far is the flight from IAH to SNA? ▼
The flight distance from Houston (IAH) to Santa Ana (SNA) is approximately 1,346 miles. This route is served by 1 carrier.
When is the best time to fly from IAH to SNA? ▼
The best recent month for on-time performance was Dec 2025 (97% on-time). The worst was Jul 2024 (64% on-time). Consider booking during months with historically better performance.

Airports on this route

IAH Airport

Houston
SNA Airport

Santa Ana
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using IAH–SNA data

IAH–SNA runs 5.6 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare IAH and SNA airport profiles: delay causes and top routes differ even on the same corridor. IAH airport
  • If your dates flex, September (91.5% on-time) beats June (75.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 84.6% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.