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Route Reliability

New York → Washington

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

53
A Little Dicey
WanderNerd Reliability Score
75%
Arrive within 15 minutes
14 min
Average arrival delay
7.0%
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 75% of the time across 1,453 flights. No comparison to make.

What the data says

Morning-you made the right choice.

LGA–IAD flights departing between 6–9 AM arrived on time 90% of the time, versus 59% between 12–3 PM.

Friday is doing you no favors.

LGA–IAD flights arrived on time 81% of the time on Saturdays. On Fridays: 69%.

Keep a backup plan handy.

This route was cancelled 7.0% of the time. Typical for U.S. flights is around 1–2%.

Slipping a little lately.

LGA–IAD flights arrived on time 73% of the time over the last three months in the data, compared with 79% 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%(187 flights)
  • Tue78%(193 flights)
  • Wed77%(195 flights)
  • Thu72%(188 flights)
  • Fri69%(199 flights)
  • Sat81%(194 flights)
  • Sun71%(196 flights)
On-time by departure window
  • 6–9 AM90%(343 flights)
  • 9 AM–12 PM77%(345 flights)
  • 12–3 PM59%(338 flights)
  • 3–6 PM—(3 flights)
  • 6–9 PM72%(323 flights)
On-time trend by month
77%
May

Jun 67% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%114
July 202564%104
August 202583%120
September 202578%116
October 202577%122
November 202570%101
December 202568%118
January 202684%115
February 202684%101
March 202670%106
April 202673%114
May 202677%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.