Historical on-time performance
Austin to Boston
1,698 miData through Dec 2025Source: US DOT · BTS
Flights on AUS–BOS arrive on time 67% of the time over the last 12 months.
On-time rate67%arrived within 15 min
p90 delay90 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights
based on 1,298 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time71%Medianon timep9075 minCancel1.6%Flights960
- Southwest AirlinesOn-time47%Median15 minp90115 minCancel1.6%Flights62
- JetBlue AirwaysOn-time54%Median5 minp90110 minCancel0.7%Flights276
Why flights run late
Delay causes
- Airline32%
- Weather1%
- Air traffic (NAS)32%
- Late aircraft36%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly AUS → BOS
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 86% on time.
- Mornings86% on time · p90 20 min · 1,439 flights
- Evenings67% on time · p90 80 min · 1,704 flights
- Afternoons64% on time · p90 95 min · 689 flights
- Middays62% on time · p90 85 min · 958 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 68% to 77% on time.
- Saturdays77% on time · p90 55 min · 552 flights
- Wednesdays77% on time · p90 45 min · 705 flights
- Tuesdays76% on time · p90 60 min · 703 flights
- Mondays69% on time · p90 75 min · 718 flights
- Thursdays69% on time · p90 90 min · 707 flights
- Fridays68% on time · p90 80 min · 713 flights
- Sundays68% on time · p90 85 min · 696 flights
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