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Flight Reliability

AA 6378 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 6378 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

76%
Arrive within 15 minutes
10 min
Average arrival delay
0.9%
Cancelled
5 min early
Median arrival delay

Based on 546 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(78 flights)
  • Tue76%(74 flights)
  • Wed69%(70 flights)
  • Thu78%(78 flights)
  • Fri73%(78 flights)
  • Sat82%(78 flights)
  • Sun80%(83 flights)
On-time by departure window
  • 6–9 AM64%(98 flights)
  • 9 AM–12 PM75%(123 flights)
  • 12–3 PM89%(177 flights)
  • 3–6 PM76%(106 flights)
  • 6–9 PM49%(35 flights)
On-time trend by month
43%
May

Jun 80% → May 43% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%15
July 202593%54
August 202598%61
September 202571%34
October 202598%58
December 202590%39
January 202655%58
February 202666%56
March 2026100%62
April 202638%58
May 202643%40
Departures on time
79%
Diverted
0.4%
Flights flown
539
Months covered
12

Keep nerding

Based on 546 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.