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

Miami, FL (MIA) to Austin, TX (AUS) flight delay odds

Historically, 71.9% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,161 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
71.9%arrived on time
18.7%30+ min late
1.1%cancelled
2,161scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.1%all scheduled flights
120+ minutes late3.7%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+11.7 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 morning40589.4%6.4%1.2%
Late morning11377.9%16.8%0.0%
Afternoon70266.4%22.8%0.7%
Evening61168.6%20.3%1.1%
Night33066.1%22.7%1.8%

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
Monday31372.8%17.9%2.6%
Tuesday30480.6%12.5%1.0%
Wednesday28677.3%15.0%0.3%
Thursday31973.4%18.5%0.6%
Friday30969.6%20.1%0.3%
Saturday30069.0%18.7%1.7%
Sunday33061.5%27.3%0.9%

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
American Airlines1,52372.7%18.4%1.3%
Southwest Airlines34869.0%19.5%0.3%
Delta Air Lines22268.5%21.2%0.9%
Frontier Airlines4682.6%10.9%0.0%
Envoy Air2272.7%18.2%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202517865.2%27.5%2.2%
August 202515768.2%22.3%1.3%
September 202512579.2%11.2%0.8%
October 202515273.7%15.1%0.0%
November 202516677.1%15.1%1.2%
December 202518673.1%18.8%0.0%
January 202617565.7%17.1%4.6%
February 202618278.6%13.2%0.5%
March 202621776.5%15.2%1.4%
April 202621071.0%18.6%0.5%
May 202621367.1%23.5%0.0%
June 202620069.5%23.5%0.5%

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.

Airline39.4%
Late aircraft38.6%
National airspace16.0%
Weather5.9%
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.