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Route Reliability

New York → Washington

JFK–IAD · 228 miles · John F. Kennedy International Airport to Washington Dulles International Airport

61
A Little Dicey
WanderNerd Reliability Score
78%
Arrive within 15 minutes
3 min
Average arrival delay
6.2%
Cancelled
713
Flights in the data

Data through May 2026.

Delta Air Lines is the only airline in this data on this route, arriving on time 78% of the time across 713 flights. No comparison to make.

What the data says

Morning flights do better here.

JFK–IAD flights departing between 9 AM–12 PM arrived on time 84% of the time, versus 72% between 3–6 PM.

Sunday scaries are real for this one.

JFK–IAD flights arrived on time 84% of the time on Wednesdays. On Sundays: 71%.

Keep a backup plan handy.

This route was cancelled 6.2% of the time. Typical for U.S. flights is around 1–2%.

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
  • Mon81%(94 flights)
  • Tue79%(96 flights)
  • Wed84%(97 flights)
  • Thu75%(96 flights)
  • Fri80%(98 flights)
  • Sat76%(97 flights)
  • Sun71%(91 flights)
On-time by departure window
  • 9 AM–12 PM84%(335 flights)
  • 12–3 PM—(4 flights)
  • 3–6 PM72%(323 flights)
  • 6–9 PM—(7 flights)
On-time trend by month
87%
May

Jun 69% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%51
July 202580%51
August 202585%61
September 202583%60
October 202572%61
November 202573%55
December 202575%47
January 202683%53
February 202677%51
March 202665%60
April 202686%59
May 202687%60

Same trip, other airports

Keep nerding

Based on 713 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.