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Flight Reliability

AA 3637 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 3637 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

83%
Arrive within 15 minutes
1 min
Average arrival delay
0.4%
Cancelled
9 min early
Median arrival delay

Based on 521 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(83 flights)
  • Tue94%(70 flights)
  • Wed82%(68 flights)
  • Thu89%(81 flights)
  • Fri81%(79 flights)
  • Sat72%(54 flights)
  • Sun79%(82 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM84%(165 flights)
  • 12–3 PM84%(191 flights)
  • 3–6 PM78%(90 flights)
  • 6–9 PM84%(70 flights)
On-time trend by month
97%
May

Jun 81% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%58
July 202594%54
August 202588%33
October 202578%51
November 202575%57
December 202576%54
January 202681%32
February 202673%45
March 202690%49
April 202683%48
May 202697%35
Departures on time
84%
Diverted
0.4%
Flights flown
517
Months covered
12

Keep nerding

Based on 521 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.