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Flight Reliability

AA 3749 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 3749 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
1.1%
Cancelled
7 min early
Median arrival delay

Based on 362 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(50 flights)
  • Tue90%(52 flights)
  • Wed80%(50 flights)
  • Thu82%(56 flights)
  • Fri89%(56 flights)
  • Sat77%(43 flights)
  • Sun81%(47 flights)
On-time by departure window
  • 6–9 AM82%(90 flights)
  • 9 AM–12 PM75%(64 flights)
  • 12–3 PM89%(61 flights)
  • 3–6 PM89%(64 flights)
  • 6–9 PM79%(75 flights)
On-time trend by month
86%
May

Jun 80% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202574%31
August 202589%56
September 202588%32
October 202569%26
November 202591%11
December 202593%28
January 202674%34
February 202682%22
March 202686%21
April 202679%28
May 202686%35
Departures on time
83%
Diverted
1.1%
Flights flown
354
Months covered
12

Keep nerding

Based on 362 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.