Skip to content
WanderNerd
Check a flight

Route Reliability

Pittsburgh → Washington

PIT–IAD · 182 miles · Pittsburgh International Airport to Washington Dulles International Airport

91
Nerd Approved
WanderNerd Reliability Score
88%
Arrive within 15 minutes
3 min early
Average arrival delay
1.3%
Cancelled
1,505
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 88% of the time across 1,505 flights. No comparison to make.

What the data says

Morning flights do better here.

PIT–IAD flights departing between 6–9 AM arrived on time 98% of the time, versus 73% between 3–6 PM.

Sunday scaries are real for this one.

PIT–IAD flights arrived on time 93% of the time on Saturdays. On Sundays: 85%.

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
  • Mon87%(211 flights)
  • Tue90%(212 flights)
  • Wed91%(210 flights)
  • Thu89%(213 flights)
  • Fri85%(215 flights)
  • Sat93%(212 flights)
  • Sun85%(213 flights)
On-time by departure window
  • 6–9 AM98%(357 flights)
  • 9 AM–12 PM92%(362 flights)
  • 12–3 PM81%(220 flights)
  • 3–6 PM73%(190 flights)
  • 6–9 PM88%(357 flights)
On-time trend by month
91%
May

Jun 80% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%140
July 202585%144
August 202590%124
September 202593%120
October 202586%124
November 202591%117
December 202587%124
January 202690%117
February 202688%110
March 202688%124
April 202693%120
May 202691%122

Same trip, other airports

Keep nerding

Based on 1,505 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.