IAD to ROC flight delays & on-time performance
Nonstop flights from Washington Dulles International Airport to Frederick Douglass Greater Rochester International Airport · 287 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAD or ROC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Washington (IAD) to Rochester (ROC) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.6% were cancelled, and 7% arrived an hour or more late.
- Departures scheduled around 5pm did best (76% on time); around 10pm did worst (76%).
- Tuesday was the most reliable day to fly (93% on time) and Sunday the least (50%).
- The largest source of delay minutes was late-arriving aircraft (46%).
Which airline is most on time from IAD to ROC?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 88% | 0.0% | 19 min | 12.5% | 8 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 76% | 1.7% | 13 min | 6.8% | 120 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5pm76%61 flights
- 10pm76%63 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday67%0.0% cancelled
- Tuesday93%0.0% cancelled
- Wednesday85%0.0% cancelled
- Thursday84%0.0% cancelled
- Friday68%4.8% cancelled
- Saturday83%0.0% cancelled
- Sunday50%6.7% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft46%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion16%
- Extreme weather7%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather50%
- Air traffic control & airport congestion50%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
IAD to ROC: common questions
- How often are IAD to ROC flights on time?
- 77% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Washington to Rochester cancelled?
- 1.6% of scheduled flights were cancelled (2 of 128).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 58 min behind schedule on average, and 7.2% of flights were an hour or more late.
- How long is taxi time at IAD?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ROC to IAD — 83% on time
More flights from Washington
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: IAD → ROC, nonstop flights by US airlines that report to the DOT. How we calculate this.