Historical on-time performance
Austin to Washington
1,297 miData through Dec 2025Source: US DOT · BTS
Flights on AUS–IAD arrive on time 87% of the time over the last 12 months.
On-time rate87%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights
based on 1,060 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time87%Medianon timep9020 minCancel0.6%Flights1,060
Why flights run late
Delay causes
- Airline27%
- Weather5%
- Air traffic (NAS)23%
- Late aircraft44%
- 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 → IAD
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 — 90% on time.
- Mornings90% on time · p90 10 min · 1,086 flights
- Middays86% on time · p90 20 min · 1,340 flights
- Afternoons81% on time · p90 40 min · 512 flights
- Evenings77% on time · p90 65 min · 384 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 84% to 89% on time.
- Tuesdays89% on time · p90 15 min · 488 flights
- Wednesdays88% on time · p90 15 min · 467 flights
- Sundays86% on time · p90 20 min · 478 flights
- Saturdays85% on time · p90 25 min · 296 flights
- Mondays85% on time · p90 20 min · 515 flights
- Thursdays84% on time · p90 25 min · 571 flights
- Fridays84% on time · p90 25 min · 507 flights
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