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Route Reliability

Washington → Jacksonville

IAD–JAX · 631 miles · Washington Dulles International Airport to Jacksonville International Airport

86
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
1 min
Average arrival delay
1.1%
Cancelled
1,010
Flights in the data

Data through May 2026.

Airlines on this route

  • United Airlines85% on time · 950 flights
  • Allegiant Air50% on time · 60 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning flights do better here.

IAD–JAX flights departing between 6–9 AM arrived on time 89% of the time, versus 62% between 6–9 PM.

Friday is doing you no favors.

IAD–JAX flights arrived on time 87% of the time on Wednesdays. On Fridays: 78%.

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
  • Mon83%(166 flights)
  • Tue79%(126 flights)
  • Wed87%(130 flights)
  • Thu87%(136 flights)
  • Fri78%(166 flights)
  • Sat85%(137 flights)
  • Sun80%(137 flights)
On-time by departure window
  • 6–9 AM89%(244 flights)
  • 9 AM–12 PM84%(96 flights)
  • 12–3 PM80%(225 flights)
  • 3–6 PM83%(367 flights)
  • 6–9 PM62%(66 flights)
On-time trend by month
85%
May

Jun 63% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%98
July 202568%95
August 202582%96
September 202593%89
October 202591%92
November 202590%92
December 202577%84
January 202689%53
February 202689%52
March 202683%94
April 202687%68
May 202685%85

Same trip, other airports

Keep nerding

Based on 1,010 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.