EWR to IAD flight delays & on-time performance
Nonstop flights from Newark Liberty International Airport to Washington Dulles International Airport · 212 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at EWR or IAD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Newark (EWR) to Washington (IAD) arrived on time 75% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.7% were cancelled, and 9% arrived an hour or more late.
- Departures scheduled around 6am did best (96% on time); around 2pm did worst (57%).
- Saturday was the most reliable day to fly (81% on time) and Sunday the least (65%).
- The largest source of delay minutes was late-arriving aircraft (42%).
Which airline is most on time from EWR to IAD?
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 |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 76% | 10.7% | 18 min | 4.0% | 28 |
| United Airlines | 75% | 2.5% | 18 min | 9.5% | 1,506 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am96%363 flights
- 10am79%74 flights
- 2pm57%63 flights
- 3pm69%302 flights
- 7pm65%359 flights
- 9pm72%354 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday80%4.1% cancelled
- Tuesday79%2.7% cancelled
- Wednesday75%1.8% cancelled
- Thursday72%1.8% cancelled
- Friday74%0.0% cancelled
- Saturday81%2.3% cancelled
- Sunday65%5.9% 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 aircraft42%
- Air traffic control & airport congestion26%
- Airline (crew, maintenance, cleaning, fueling)25%
- Extreme weather6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather98%
- Air traffic control & airport congestion2%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
EWR to IAD: common questions
- How often are EWR to IAD flights on time?
- 75% 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 Newark to Washington cancelled?
- 2.7% of scheduled flights were cancelled (41 of 1,534).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 70 min behind schedule on average, and 9.4% of flights were an hour or more late.
- How long is taxi time at EWR?
- Flights on this route spent 27 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAD to EWR — 76% on time
More flights from Newark
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: EWR → IAD, nonstop flights by US airlines that report to the DOT. How we calculate this.