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Flight Reliability

AA 4371 · American Airlines

New York → Washington (LGA–DCA)84% of its flights flew this route. The rest (BOS–IND, MYR–ORD) are included in these numbers.

66
Usually Fine
WanderNerd Reliability Score
70%
Arrive within 15 minutes
15 min
Average arrival delay
2.3%
Cancelled
1 min early
Median arrival delay

Based on 354 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

AA 4371 departing between 9 AM–12 PM arrived on time 81% of the time, versus 58% between 6–9 PM.

Thursdays have been rough.

AA 4371 arrived on time 79% of the time on Saturdays and just 63% on Thursdays. That gap is worth planning around.

A bit behind the American Airlines network.

AA 4371 arrived on time 70% of the time, versus 77% across the American Airlines network.

Trending in the right direction.

AA 4371 arrived on time 66% of the time over the last three months in the data, compared with 57% in the three months before that.

The breakdown

On-time by weekday
  • Mon71%(48 flights)
  • Tue66%(50 flights)
  • Wed65%(51 flights)
  • Thu63%(49 flights)
  • Fri68%(50 flights)
  • Sat79%(56 flights)
  • Sun76%(42 flights)
On-time by departure window
  • 3–6 AM—(4 flights)
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM81%(154 flights)
  • 12–3 PM61%(149 flights)
  • 6–9 PM58%(38 flights)
On-time trend by month
67%
May

Jun 83% → May 67% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202577%31
August 202593%27
September 202580%30
October 202570%27
November 202563%30
December 202540%30
January 202672%29
February 202660%25
March 202663%30
April 202667%33
May 202667%24
Departures on time
78%
Diverted
0%
Flights flown
346
Months covered
12

Same route, other flights

Keep nerding

Based on 354 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.