Historical on-time performance
Pittsburgh to Washington
Flights on PIT–IAD arrive on time 87% of the time over the last 12 months.
based on 1,212 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- United AirlinesOn-time88%Medianon timep9015 minCancel0.7%Flights406
- Republic AirwaysOn-time86%Medianon timep9020 minCancel1.6%Flights806
Why flights run late
Delay causes
- Airline13%
- Weather3%
- Air traffic (NAS)39%
- Late aircraft44%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline6%
- Weather69%
- Air traffic (NAS)25%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 16 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 PIT → IAD
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 76% to 95% on time.
- Mornings95% on time · p90 5 min · 1,057 flights
- Middays93% on time · p90 5 min · 530 flights
- Evenings84% on time · p90 25 min · 178 flights · limited
- Overnights84% on time · p90 20 min · 311 flights
- Afternoons76% on time · p90 30 min · 651 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 86% to 92% on time.
- Saturdays92% on time · p90 5 min · 287 flights
- Thursdays90% on time · p90 10 min · 421 flights
- Tuesdays88% on time · p90 15 min · 403 flights
- Mondays87% on time · p90 15 min · 412 flights
- Wednesdays87% on time · p90 15 min · 417 flights
- Fridays87% on time · p90 20 min · 409 flights
- Sundays86% on time · p90 20 min · 378 flights
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