BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
PIT→IAD

Pittsburgh, PA (PIT) to Washington, DC (IAD) flight delay odds

87.0% of 1,266 official scheduled PIT-to-IAD flights arrived on time; 5.6% arrived at least 30 minutes late and 1.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
87.0%arrived on time
5.6%30+ min late
1.4%cancelled
1,266scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.3%all scheduled flights
120+ minutes late1.7%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival-3.8 mincompleted flights

Which departure time was most reliable for PIT to IAD?

Among qualifying PIT-to-IAD departure window results, Early morning had the highest on-time rate: 96.9% of 360 flights. Afternoon was lowest at 73.9% across 314 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36096.9%1.1%0.8%
Late morning26392.8%4.2%0.8%
Afternoon31473.9%9.9%1.6%
Evening32984.2%7.6%2.4%

Which weekday was most reliable for PIT to IAD?

Among qualifying PIT-to-IAD weekday results, Saturday had the highest on-time rate: 95.9% of 122 flights. Sunday was lowest at 80.9% across 183 flights.

DayFlightsOn time30+ minCancelled
Monday19284.4%5.2%2.1%
Tuesday19289.1%5.7%1.6%
Wednesday19786.8%4.6%1.0%
Thursday19689.8%6.1%0.5%
Friday18485.3%7.1%0.0%
Saturday12295.9%1.6%1.6%
Sunday18380.9%7.7%3.3%

Which airline was most reliable for PIT to IAD?

Among qualifying PIT-to-IAD airline results, United Airlines had the highest on-time rate: 87.4% of 499 flights. Republic Airways was lowest at 86.8% across 767 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways76786.8%5.1%1.8%
United Airlines49987.4%6.4%0.8%

Which month was most reliable for PIT to IAD?

Among qualifying PIT-to-IAD month results, September 2025 had the highest on-time rate: 91.9% of 111 flights. July 2025 was lowest at 76.0% across 129 flights.

MonthFlightsOn time30+ minCancelled
July 202512976.0%7.0%7.0%
August 202510588.6%4.8%0.0%
September 202511191.9%4.5%0.0%
October 202511184.7%3.6%0.0%
November 202510890.7%3.7%0.0%
December 202510288.2%7.8%0.0%
January 202611287.5%6.2%5.4%
February 202610487.5%3.8%1.0%
March 202611487.7%9.6%0.0%
April 20269690.6%2.1%0.0%
May 20268890.9%3.4%1.1%
June 20268682.6%10.5%1.2%

What drove PIT to IAD delay minutes?

Late aircraft was the largest recorded PIT-to-IAD delay category, accounting for 49.7% of 8,604 BTS-attributed delay minutes during July 2025–June 2026.

Airline12.3%
Late aircraft49.7%
National airspace35.2%
Weather2.8%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.