Skip to content
WanderNerd
Check a flight

Flight Reliability

AA 4421 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 4421 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

70%
Arrive within 15 minutes
13 min
Average arrival delay
5.2%
Cancelled
6 min early
Median arrival delay

Based on 440 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(63 flights)
  • Tue75%(63 flights)
  • Wed68%(63 flights)
  • Thu61%(64 flights)
  • Fri71%(61 flights)
  • Sat76%(38 flights)
  • Sun69%(64 flights)
On-time by departure window
  • 6–9 AM86%(81 flights)
  • 9 AM–12 PM82%(66 flights)
  • 12–3 PM71%(62 flights)
  • 3–6 PM70%(103 flights)
  • 6–9 PM43%(73 flights)
  • 9 PM–12 AM71%(31 flights)
On-time trend by month
77%
May

Jun 59% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202559%32
July 202594%51
August 202573%11
October 202596%25
November 202541%22
December 202569%54
January 202679%29
February 202658%36
March 202660%53
April 202662%53
May 202677%48
Departures on time
73%
Diverted
0.2%
Flights flown
416
Months covered
12

Keep nerding

Based on 440 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.