PlainFlights

Route · HOU → SAT · 2020–2025 BTS data

Houston to San Antonio

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), HOU to SAT (Houston to San Antonio) ranks #1274 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

80.1%
On-time
+1.1 pts
vs US avg
57 min
Delay when late
9,296
Flights
#1274 of 4927
Corpus placement

Cancelled

0.6%

Best Month

Sep 2024 93%

Worst Month

Jul 2024 57%

Distance

192 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 122 18 0 0 WN
Nov 2025 119 23 0 0 WN
Oct 2025 140 22 0 0 WN
Sep 2025 141 11 0 0 WN
Aug 2025 143 21 0 1 WN
Jul 2025 131 34 0 0 WN
Jun 2025 129 36 0 0 WN
May 2025 132 29 0 0 WN
Apr 2025 128 25 0 0 WN
Mar 2025 133 27 0 0 WN
Feb 2025 116 16 0 0 WN
Jan 2025 127 15 8 0 WN
Dec 2024 124 27 0 0 WN
Nov 2024 121 10 0 0 WN
Oct 2024 130 17 1 0 WN
Sep 2024 121 8 0 0 WN
Aug 2024 126 15 0 0 WN
Jul 2024 138 59 6 0 WN
Jun 2024 136 43 0 0 WN
May 2024 148 54 3 0 WN
Apr 2024 143 34 0 0 WN
Mar 2024 150 32 0 1 WN
Feb 2024 141 14 0 0 WN
Jan 2024 151 39 2 0 WN

HOU–SAT seasonal on-time pattern

Best: September (86.3%) · weakest: June (71.0%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 78.7%

Strongest calendar month

September

86.3% on-time · ~130 flights/mo

Busiest calendar month

August

~141 flights/mo avg

Weakest calendar month

June

71.0% on-time · ~131 flights/mo

Cancellation Rate

0.6%

20 of 3,190 flights

Diversion Rate

0.1%

2 of 3,190 flights

Explore origin & destination

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

HOU - Houston

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

HOU on-time profile

SAT - San Antonio

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

SAT on-time profile

Compare the two airports

See HOU and SAT side by side on delays, cancellations, and reliability.

Compare HOU vs SAT

Origin-hub reliability standing

Mid-pack among HOU departures

From HOU, this corridor sits with 43 other 75–85% on-time routes out of 50 tracked departures, not the hub's reliability leaders (1 at ≥85%) and not the softest ( 6 below 75%). Destination: San Antonio · fleet on-time rank #3100 of 4927.

What the Data Says About HOU to SAT

9,296 tracked flights put the HOU to SAT pairing (Houston to San Antonio) at a 80.1% on-time rate, squarely in line with the wider network. Delays that do occur run 57.0 minutes on average. Across the 192-mile route and its 1 carrier, the trailing 24 months show 0.6% cancelled and 0.1% diverted (3,190 flights sampled).

The monthly split is wide on this route: Sep 2024 posted the strongest performance at 93% on-time, while Jul 2024 came in at just 57% - a 36-point swing worth factoring into travel timing.

On the multi-year calendar, HOU–SAT peaks in September at 86.3% on-time while August carries the heaviest traffic (~141 flights per month) ; the softest month is June at 71.0%, a 15.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does HOU to SAT rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, HOU to SAT ranks #1274 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 HOU to SAT? ▼
Flights from Houston to San Antonio have a 80.1% on-time rate based on 9,296 flights. The average delay is 57.0 minutes. The best recent month was Sep 2024 with 93% on-time.
What is the cancellation rate for HOU to SAT? ▼
Over the last 24 months, 0.6% of flights on this route were cancelled (20 of 3,190 flights) and 0.1% were diverted.
How far is the flight from HOU to SAT? ▼
The flight distance from Houston (HOU) to San Antonio (SAT) is approximately 192 miles. This route is served by 1 carrier.
When is the best time to fly from HOU to SAT? ▼
The best recent month for on-time performance was Sep 2024 (93% on-time). The worst was Jul 2024 (57% on-time). Consider booking during months with historically better performance.

Airports on this route

HOU Airport

Houston
SAT Airport

San Antonio
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 HOU–SAT data

HOU–SAT is mid-pack at 80.1% on-time; month and carrier mix move more than the corridor headline.

  • Compare HOU and SAT airport profiles: delay causes and top routes differ even on the same corridor. HOU airport
  • If your dates flex, September (86.3% on-time) beats June (71.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 80.1% 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.