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Route Reliability

Boston → Washington

BOS–IAD · 412 miles · Boston Logan International Airport to Washington Dulles International Airport

83
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
6 min
Average arrival delay
1.9%
Cancelled
1,490
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 83% of the time across 1,490 flights. No comparison to make.

What the data says

Morning-you made the right choice.

BOS–IAD flights departing between 3–6 AM arrived on time 97% of the time, versus 67% between 6–9 PM.

Skip Thursday if you can.

BOS–IAD flights arrived on time 86% of the time on Saturdays. On Thursdays: 76%.

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
  • Mon86%(206 flights)
  • Tue85%(203 flights)
  • Wed82%(204 flights)
  • Thu76%(210 flights)
  • Fri85%(215 flights)
  • Sat86%(208 flights)
  • Sun79%(214 flights)
On-time by departure window
  • 3–6 AM97%(340 flights)
  • 9 AM–12 PM92%(361 flights)
  • 12–3 PM76%(411 flights)
  • 6–9 PM67%(348 flights)
On-time trend by month
89%
May

Jun 77% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%146
July 202572%121
August 202581%133
September 202582%141
October 202573%123
November 202587%117
December 202584%122
January 202686%103
February 202690%96
March 202689%116
April 202688%120
May 202689%122

Same trip, other airports

Keep nerding

Based on 1,490 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.