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

San Francisco, CA (SFO) to Austin, TX (AUS) flight delay odds

Historically, 74.0% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,792 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
74.0%arrived on time
16.2%30+ min late
0.8%cancelled
2,792scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.5%all scheduled flights
120+ minutes late2.8%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+9.5 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 morning59092.0%3.7%0.8%
Late morning45361.4%23.8%0.9%
Afternoon98766.3%21.4%1.0%
Evening58875.2%16.7%0.3%
Night17485.1%7.5%0.6%

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
Monday41771.5%17.3%1.2%
Tuesday38878.9%12.9%0.5%
Wednesday39675.5%16.9%1.0%
Thursday42071.2%16.4%0.2%
Friday41371.9%16.7%0.2%
Saturday35079.1%11.7%2.3%
Sunday40870.8%20.6%0.2%

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
United Airlines1,65381.7%10.0%0.7%
Delta Air Lines44459.9%26.6%1.6%
Southwest Airlines34444.8%39.0%0.0%
Alaska Airlines34383.7%10.2%0.9%
SkyWest Airlines8100.0%0.0%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202524170.1%17.8%2.9%
August 202525082.8%8.0%0.8%
September 202522784.1%7.5%0.0%
October 202525378.7%11.9%0.8%
November 202525074.4%15.2%0.4%
December 202526074.2%18.8%0.4%
January 202620473.0%15.2%3.4%
February 202618275.8%15.4%0.0%
March 202621080.5%9.5%0.5%
April 202622072.7%17.3%0.0%
May 202625361.7%26.9%0.4%
June 202624261.2%28.9%0.0%

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.

Airline27.3%
Late aircraft55.0%
National airspace17.2%
Weather0.4%
Security0.0%
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.