Skip to content
WanderNerd
Check a flight

Route Reliability

Washington → Austin

IAD–AUS · 1,297 miles · Washington Dulles International Airport to Austin–Bergstrom International Airport

87
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
0 min
Average arrival delay
0.8%
Cancelled
1,144
Flights in the data

Data through May 2026.

Airlines on this route

  • United Airlines84% on time · 1,125 flights
  • Allegiant Air95% on time · 19 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning flights do better here.

IAD–AUS flights departing between 9 AM–12 PM arrived on time 94% of the time, versus 74% between 3–6 PM.

Sunday scaries are real for this one.

IAD–AUS flights arrived on time 89% of the time on Tuesdays. On Sundays: 81%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon81%(171 flights)
  • Tue89%(157 flights)
  • Wed82%(159 flights)
  • Thu87%(162 flights)
  • Fri84%(173 flights)
  • Sat83%(149 flights)
  • Sun81%(160 flights)
On-time by departure window
  • 6–9 AM94%(344 flights)
  • 9 AM–12 PM94%(16 flights)
  • 12–3 PM86%(351 flights)
  • 3–6 PM74%(405 flights)
  • 6–9 PM75%(12 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
85%
May

Jun 69% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%116
July 202570%100
August 202586%106
September 202593%110
October 202593%93
November 202589%88
December 202581%93
January 202683%75
February 202690%76
March 202685%92
April 202689%89
May 202685%93

Same trip, other airports

Keep nerding

Based on 1,144 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.