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Route Reliability

Washington → MOB

IAD–MOB · 836 miles · Washington Dulles International Airport to MOB Airport

66
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
30 min
Average arrival delay
1.3%
Cancelled
542
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 76% of the time across 542 flights. No comparison to make.

What the data says

Morning-you made the right choice.

IAD–MOB flights departing between 9 AM–12 PM arrived on time 88% of the time, versus 70% between 3–6 PM.

Skip Wednesday if you can.

IAD–MOB flights arrived on time 81% of the time on Saturdays. On Wednesdays: 71%.

Slipping a little lately.

IAD–MOB flights arrived on time 74% of the time over the last three months in the data, compared with 78% 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

The breakdown

On-time by weekday
  • Mon76%(78 flights)
  • Tue81%(72 flights)
  • Wed71%(69 flights)
  • Thu77%(79 flights)
  • Fri73%(80 flights)
  • Sat81%(73 flights)
  • Sun73%(81 flights)
On-time by departure window
  • 6–9 AM79%(128 flights)
  • 9 AM–12 PM88%(48 flights)
  • 3–6 PM70%(175 flights)
  • 6–9 PM76%(181 flights)
On-time trend by month
68%
May

Jun 55% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202555%58
July 202567%57
August 202581%62
September 202588%58
October 202584%49
November 202584%50
December 202567%45
January 202685%33
February 202682%28
March 202665%31
April 202690%30
May 202668%31

Keep nerding

Based on 542 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.