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Route Reliability

Washington → New York

IAD–LGA · 228 miles · Washington Dulles International Airport to LaGuardia Airport

52
A Little Dicey
WanderNerd Reliability Score
73%
Arrive within 15 minutes
13 min
Average arrival delay
6.9%
Cancelled
1,453
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 73% of the time across 1,453 flights. No comparison to make.

What the data says

Morning-you made the right choice.

IAD–LGA flights departing between 6–9 AM arrived on time 80% of the time, versus 68% between 12–3 PM.

Friday is doing you no favors.

IAD–LGA flights arrived on time 82% of the time on Saturdays and just 65% on Fridays. That gap is worth planning around.

Keep a backup plan handy.

This route was cancelled 6.9% of the time. Typical for U.S. flights is around 1–2%.

Slipping a little lately.

IAD–LGA flights arrived on time 71% of the time over the last three months in the data, compared with 77% 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
  • Mon72%(187 flights)
  • Tue76%(197 flights)
  • Wed75%(188 flights)
  • Thu72%(193 flights)
  • Fri65%(199 flights)
  • Sat82%(194 flights)
  • Sun69%(193 flights)
On-time by departure window
  • 6–9 AM80%(344 flights)
  • 12–3 PM68%(342 flights)
  • 3–6 PM69%(330 flights)
  • 6–9 PM—(3 flights)
  • 9 PM–12 AM75%(332 flights)
On-time trend by month
74%
May

Jun 62% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%113
July 202563%104
August 202578%120
September 202582%116
October 202579%122
November 202566%101
December 202567%118
January 202686%115
February 202679%101
March 202667%106
April 202671%114
May 202674%121

Same trip, other airports

Keep nerding

Based on 1,453 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.