AA521 American Airlines - Flight Status

Which is the frequency of flight AA521?
The flight AA521 is scheduled to flight on daily basis.

Which is the distance of flight AA521?
The distance between the two airports is 1581 miles.

Which is the flight time of flight AA521?
The scheduled flight time gate to gate is: 04:12 hours.
The real flight time gate to gate on average is: 02:57 hours.

Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in San Juan: 2026-01-14 02:25:28
Current Time in Philadelphia: 2026-01-14 01:25:28

The following airlines serves the same route between San Juan and Philadelphia:

American Airlines
- Flight Number: AA2433. (On Time performance: 67 - Average Delay: 41 minutes)
- Flight Number: AA3063. (On Time performance: 84 - Average Delay: 126 minutes)
- Flight Number: AA419. (On Time performance: 58 - Average Delay: 64 minutes)

Frontier Airlines
- Flight Number: F91015. (On Time performance: 60 - Average Delay: 32 minutes)
- Flight Number: F91165. (On Time performance: 61 - Average Delay: 35 minutes)
- Flight Number: F91725. (On Time performance: 20 - Average Delay: 21 minutes)
- Flight Number: F92695.
- Flight Number: F93247. (On Time performance: 46 - Average Delay: 44 minutes)

Spirit Airlines
- Flight Number: NK1015. (On Time performance: 69 - Average Delay: 33 minutes)
- Flight Number: NK656.

We have gathered data from recent months and present below an analysis of how timely the flights have been.

Delays analyzed by Weekday: We have gathered available data from last six months, spanning from September 04, 2025 to January 10, 2026. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.

Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from September 04, 2025 to November 01, 2025. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.

Note: We have excluded some months from the graph, since the quantity and quality of the data is not representative enough.