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Route Reliability

Washington → Manchester

IAD–MHT · 418 miles · Washington Dulles International Airport to Manchester–Boston Regional Airport

62
A Little Dicey
WanderNerd Reliability Score
74%
Arrive within 15 minutes
25 min
Average arrival delay
2.8%
Cancelled
726
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 726 flights. No comparison to make.

What the data says

The late departure is the smart one here.

IAD–MHT flights departing between 9 PM–12 AM arrived on time 80% of the time, versus 69% between 9 AM–12 PM.

Friday is doing you no favors.

IAD–MHT flights arrived on time 79% of the time on Wednesdays. On Fridays: 71%.

Trending in the right direction.

IAD–MHT flights arrived on time 82% of the time over the last three months in the data, compared with 74% in the three months before that.

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
  • Mon73%(104 flights)
  • Tue74%(100 flights)
  • Wed79%(101 flights)
  • Thu76%(109 flights)
  • Fri71%(109 flights)
  • Sat71%(77 flights)
  • Sun71%(104 flights)
On-time by departure window
  • 9 AM–12 PM69%(111 flights)
  • 12–3 PM73%(333 flights)
  • 3–6 PM75%(157 flights)
  • 9 PM–12 AM80%(103 flights)
On-time trend by month
81%
May

Jun 54% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202554%81
July 202560%72
August 202573%70
September 202582%54
October 202576%37
November 202585%54
December 202566%56
January 202674%53
February 202684%49
March 202685%54
April 202680%60
May 202681%64

Same trip, other airports

Keep nerding

Based on 726 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.