Historical on-time performance
Austin to Washington
1,297 miData through May 2026Source: US DOT · BTS
Flights on AUS–IAD arrive on time 88% of the time over the last 12 months.
On-time rate88%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
based on 1,033 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time88%Medianon timep9015 minCancel0.9%Flights1,033
Why flights run late
Delay causes
- Airline22%
- Weather3%
- Air traffic (NAS)34%
- Late aircraft41%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline44%
- Weather44%
- Air traffic (NAS)11%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 9 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly AUS → IAD
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 91% on time.
- Mornings91% on time · p90 10 min · 1,045 flights
- Middays87% on time · p90 15 min · 1,333 flights
- Afternoons81% on time · p90 40 min · 545 flights
- Evenings80% on time · p90 60 min · 329 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 84% to 90% on time.
- Tuesdays90% on time · p90 10 min · 472 flights
- Wednesdays89% on time · p90 10 min · 455 flights
- Saturdays89% on time · p90 15 min · 301 flights
- Sundays86% on time · p90 15 min · 463 flights
- Thursdays85% on time · p90 25 min · 547 flights
- Mondays85% on time · p90 20 min · 507 flights
- Fridays84% on time · p90 25 min · 507 flights
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