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

Boston, MA (BOS) to Austin, TX (AUS) flight delay odds

70.6% of 1,634 official scheduled BOS-to-AUS flights arrived on time; 19.5% arrived at least 30 minutes late and 2.0% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
70.6%arrived on time
19.5%30+ min late
2.0%cancelled
1,634scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.8%all scheduled flights
120+ minutes late3.8%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+10.3 mincompleted flights

Which departure time was most reliable for BOS to AUS?

Among qualifying BOS-to-AUS departure window results, Early morning had the highest on-time rate: 83.1% of 537 flights. Evening was lowest at 58.7% across 322 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning53783.1%9.7%1.5%
Late morning5782.5%14.0%0.0%
Afternoon71865.6%22.8%1.5%
Evening32258.7%29.2%4.0%

Which weekday was most reliable for BOS to AUS?

Among qualifying BOS-to-AUS weekday results, Wednesday had the highest on-time rate: 73.9% of 234 flights. Sunday was lowest at 64.7% across 238 flights.

DayFlightsOn time30+ minCancelled
Monday25268.7%16.7%4.8%
Tuesday24372.0%18.1%2.5%
Wednesday23473.9%16.2%0.4%
Thursday24671.1%19.9%1.6%
Friday25072.0%20.4%0.4%
Saturday17171.9%18.7%1.8%
Sunday23864.7%26.1%2.1%

Which airline was most reliable for BOS to AUS?

Among qualifying BOS-to-AUS airline results, Delta Air Lines had the highest on-time rate: 72.8% of 988 flights. Southwest Airlines was lowest at 62.1% across 282 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines98872.8%17.9%2.6%
JetBlue Airways36471.2%17.9%1.1%
Southwest Airlines28262.1%27.0%0.7%

Which month was most reliable for BOS to AUS?

Among qualifying BOS-to-AUS month results, April 2026 had the highest on-time rate: 81.2% of 138 flights. September 2025 was lowest at 65.0% across 137 flights.

MonthFlightsOn time30+ minCancelled
July 202514265.5%21.8%2.8%
August 202514167.4%24.1%0.0%
September 202513765.0%27.7%0.7%
October 202515170.2%19.9%0.7%
November 202513172.5%20.6%0.8%
December 202512568.0%20.0%2.4%
January 20269865.3%21.4%7.1%
February 202611973.9%14.3%7.6%
March 202614575.2%15.2%3.4%
April 202613881.2%14.5%0.0%
May 202614570.3%18.6%0.0%
June 202616271.0%16.0%0.6%

What drove BOS to AUS delay minutes?

Airline was the largest recorded BOS-to-AUS delay category, accounting for 41.2% of 34,044 BTS-attributed delay minutes during July 2025–June 2026.

Airline41.2%
Late aircraft34.0%
National airspace22.8%
Weather1.9%
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.