BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
AUSSAN

Austin, TX (AUS) to San Diego, CA (SAN) flight delay odds

Historically, 73.9% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,545 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
73.9%arrived on time
15.7%30+ min late
1.1%cancelled
2,545scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.5%all scheduled flights
120+ minutes late2.2%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+8.1 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning72590.1%4.0%0.8%
Late morning14174.5%12.8%0.7%
Afternoon89075.2%15.1%0.7%
Evening62957.2%27.5%1.6%
Night16058.1%28.1%2.5%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday41969.5%16.5%1.4%
Tuesday34380.5%11.4%0.6%
Wednesday33381.7%10.8%0.3%
Thursday39167.3%20.7%0.8%
Friday41773.9%16.5%1.0%
Saturday27182.7%9.6%1.5%
Sunday37166.3%21.3%1.9%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,42269.8%18.4%0.6%
SkyWest Airlines1,00080.0%11.3%1.5%
Frontier Airlines12371.5%20.3%2.4%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202520569.8%22.4%0.5%
August 202518275.8%11.5%0.5%
September 202517680.1%13.1%1.1%
October 202520171.1%14.9%0.0%
November 202519972.4%19.1%1.0%
December 202519874.7%11.6%2.0%
January 202622479.5%8.5%4.0%
February 202621581.4%10.7%0.0%
March 202625479.9%13.0%0.8%
April 202624372.0%18.5%0.0%
May 202623668.2%21.2%0.8%
June 202621261.8%22.6%1.9%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline26.0%
Late aircraft57.9%
National airspace12.9%
Weather3.1%
Security0.1%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.