PlainFlights

Route · AUS → SAN · 2020–2025 BTS data

Austin to San Diego

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), AUS to SAN (Austin to San Diego) ranks #1115 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

77.4%
On-time
-1.6 pts
vs US avg
60 min
Delay when late
10,343
Flights
#1115 of 4927
Corpus placement

Cancelled

0.8%

Best Month

Aug 2024 88%

Worst Month

May 2024 64%

Distance

1,164 mi

Carriers

25

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 198 46 4 0 WN,F9,OO
Nov 2025 199 53 2 0 OO,F9,WN
Oct 2025 201 54 0 4 OO,WN,F9
Sep 2025 176 33 2 0 WN,OO,F9
Aug 2025 182 42 1 1 OO,WN,F9
Jul 2025 205 60 1 1 OO,WN,F9
Jun 2025 196 65 2 0 OO,WN,F9
May 2025 173 54 1 0 OO,WN
Apr 2025 171 44 0 2 OO,WN
Mar 2025 167 46 1 0 OO,WN
Feb 2025 143 43 1 0 OO,WN
Jan 2025 153 39 1 2 AS,OO,WN
Dec 2024 183 58 3 2 AS,OO,WN
Nov 2024 176 27 0 0 WN,AS
Oct 2024 180 34 1 1 AS,WN
Sep 2024 150 31 1 0 WN,AS
Aug 2024 165 20 2 0 AS,WN
Jul 2024 189 64 0 0 AS,WN
Jun 2024 185 45 0 1 AS,WN
May 2024 178 64 0 1 AS,WN
Apr 2024 172 33 1 0 AS,WN
Mar 2024 165 37 0 1 AS,WN
Feb 2024 125 25 2 1 AS,WN
Jan 2024 132 33 9 0 AS,WN,OO

AUS–SAN seasonal on-time pattern

Best: February (81.3%) · weakest: June (70.0%)

65%70%75%80%85% JanFebMarAprMayJunJulAugSepOctNovDec 73.7%

Strongest calendar month

February

81.3% on-time · ~119 flights/mo

Busiest calendar month

June

~178 flights/mo avg

Weakest calendar month

June

70.0% on-time · ~178 flights/mo

Cancellation Rate

0.8%

35 of 4,164 flights

Diversion Rate

0.4%

17 of 4,164 flights

Explore origin & destination

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

AUS - Austin

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

AUS on-time profile

SAN - San Diego

Full on-time, delay-cause, and seasonal performance for San Diego, CA.

SAN on-time profile

Compare the two airports

See AUS and SAN side by side on delays, cancellations, and reliability.

Compare AUS vs SAN

Origin-hub reliability standing

Mid-pack among AUS departures

From AUS, this corridor sits with 45 other 75–85% on-time routes out of 55 tracked departures, not the hub's reliability leaders (3 at ≥85%) and not the softest ( 7 below 75%). Destination: San Diego · fleet on-time rank #3987 of 4927.

What the Data Says About AUS to SAN

The Austin to San Diego corridor (AUS to SAN) posts a 77.4% on-time rate on the lower edge of the average band, based on 10,343 tracked flights. Late flights run 60.4 minutes behind on average. 25 carriers cover the 1,164-mile route; over the last 24 months, 35 of 4,164 flights were cancelled (0.8%) and 0.4% diverted.

The monthly split is wide on this route: Aug 2024 posted the strongest performance at 88% on-time, while May 2024 came in at just 64% - a 24-point swing worth factoring into travel timing.

On the multi-year calendar, AUS–SAN peaks in February at 81.3% on-time while June carries the heaviest traffic (~178 flights per month) ; the softest month is June at 70.0%, a 11.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does AUS to SAN rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, AUS to SAN ranks #1115 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 AUS to SAN? ▼
Flights from Austin to San Diego have a 77.4% on-time rate based on 10,343 flights. The average delay is 60.4 minutes. The best recent month was Aug 2024 with 88% on-time.
What is the cancellation rate for AUS to SAN? ▼
Over the last 24 months, 0.8% of flights on this route were cancelled (35 of 4,164 flights) and 0.4% were diverted.
How far is the flight from AUS to SAN? ▼
The flight distance from Austin (AUS) to San Diego (SAN) is approximately 1,164 miles. This route is served by 25 carriers.
When is the best time to fly from AUS to SAN? ▼
The best recent month for on-time performance was Aug 2024 (88% on-time). The worst was May 2024 (64% on-time). Consider booking during months with historically better performance.

Airports on this route

AUS Airport

Austin
SAN Airport

San Diego
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 AUS–SAN data

AUS–SAN is mid-pack at 77.4% on-time; month and carrier mix move more than the corridor headline.

  • Compare AUS and SAN airport profiles: delay causes and top routes differ even on the same corridor. AUS airport
  • If your dates flex, February (81.3% on-time) beats June (70.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 77.4% 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.