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Flight Reliability

AA 3678 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 3678 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

81%
Arrive within 15 minutes
4 min
Average arrival delay
3.0%
Cancelled
6 min early
Median arrival delay

Based on 497 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(72 flights)
  • Tue81%(57 flights)
  • Wed76%(72 flights)
  • Thu84%(70 flights)
  • Fri79%(68 flights)
  • Sat79%(70 flights)
  • Sun86%(72 flights)
On-time by departure window
  • 9 AM–12 PM93%(30 flights)
  • 12–3 PM92%(125 flights)
  • 3–6 PM74%(241 flights)
  • 6–9 PM79%(85 flights)
On-time trend by month
69%
May

Jun 47% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202547%32
July 202569%29
August 202569%29
September 202579%29
October 202586%28
November 202596%45
December 202588%33
January 202696%50
February 202683%52
March 202692%60
April 202677%52
May 202669%42
Departures on time
85%
Diverted
0.2%
Flights flown
481
Months covered
12

Keep nerding

Based on 497 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.