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Route Reliability

Washington → Key West

IAD–EYW · 1,024 miles · Washington Dulles International Airport to Key West International Airport

74
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
0 min
Average arrival delay
1.3%
Cancelled
151
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 74% of the time across 151 flights. No comparison to make.

What the data says

Morning flights do better here.

IAD–EYW flights departing between 6–9 AM arrived on time 90% of the time, versus 71% between 12–3 PM.

Thursdays have been rough.

IAD–EYW flights arrived on time 95% of the time on Tuesdays and just 62% on Thursdays. That gap is worth planning around.

Flights on this route

The breakdown

On-time by weekday
  • Mon71%(21 flights)
  • Tue95%(21 flights)
  • Wed76%(21 flights)
  • Thu62%(21 flights)
  • Fri64%(22 flights)
  • Sat64%(22 flights)
  • Sun85%(20 flights)
On-time by departure window
  • 6–9 AM90%(19 flights)
  • 12–3 PM71%(129 flights)
On-time trend by month
69%
Apr

Dec 82% → Apr 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
December 202582%28
January 202688%33
February 202671%28
March 202657%30
April 202669%29

Same trip, other airports

Keep nerding

Based on 151 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.