American Airlines flight AA 521: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Daily 07:05 Memphis (MEM) 08:19 Phoenix Sky Harbor (PHX) 4
AA 521 Non-stop Airbus A320 (320) 3:14 Effective 2026-08-05 through 2026-09-08
Daily 08:10 Philadelphia (PHL) 10:07 Charleston (CHS)
AA 521 Non-stop Airbus A319 (319) 1:57 Effective 2026-09-09 through 2026-10-04
Daily 08:10 Philadelphia (PHL) 10:11 Charleston (CHS)
AA 521 Non-stop Airbus A319 (319) 2:01 Effective from 2026-10-05
Daily 08:23 Memphis (MEM) 09:39 Phoenix Sky Harbor (PHX) 4
AA 521 Non-stop Airbus A320 (320) 3:16 Effective 2026-05-21 through 2026-07-01
Daily 08:27 Memphis (MEM) 09:39 Phoenix Sky Harbor (PHX) 4
AA 521 Non-stop Airbus A319 (319) 3:12 Effective 2026-07-02 through 2026-08-04
Daily 11:07 Charleston (CHS) 12:55 Philadelphia (PHL)
AA 521 Non-stop Airbus A319 (319) 1:48 Effective 2026-09-09 through 2026-10-04
Daily 11:09 Charleston (CHS) 12:55 Philadelphia (PHL)
AA 521 Non-stop Airbus A319 (319) 1:46 Effective from 2026-10-05
Daily 11:29 Philadelphia (PHL) 16:30 Luis Munoz Marin, San Juan (SJU) C
AA 521 Non-stop Airbus A321 (321) 4:01 Effective 2026-01-16 through 2026-01-22
Daily 11:29 Philadelphia (PHL) 16:30 Luis Munoz Marin, San Juan (SJU) C
AA 521 Non-stop Airbus A321 (321) 4:01 Effective 2026-01-24 through 2026-02-11
Daily 11:32 Philadelphia (PHL) 16:33 Luis Munoz Marin, San Juan (SJU) C
AA 521 Non-stop Airbus A321 (321) 4:01 Effective 2026-01-06 through 2026-01-15
Fri 11:32 Philadelphia (PHL) 16:33 Luis Munoz Marin, San Juan (SJU) C
AA 521 Non-stop Airbus A321 (321) 4:01 Operates only on 2026-01-23
Mon,Thu-Sun 17:20 Luis Munoz Marin, San Juan (SJU) C 20:32 Philadelphia (PHL)
AA 521 Non-stop Airbus A321 (321) 4:12 Effective 2026-01-16 through 2026-01-22
Mon,Thu-Sun 17:20 Luis Munoz Marin, San Juan (SJU) C 20:32 Philadelphia (PHL)
AA 521 Non-stop Airbus A321 (321) 4:12 Effective 2026-01-24 through 2026-02-09
Mon,Thu-Sun 17:23 Luis Munoz Marin, San Juan (SJU) C 20:35 Philadelphia (PHL)
AA 521 Non-stop Airbus A321 (321) 4:12 Effective 2026-01-08 through 2026-01-15
Fri 17:23 Luis Munoz Marin, San Juan (SJU) C 20:35 Philadelphia (PHL)
AA 521 Non-stop Airbus A321 (321) 4:12 Operates only on 2026-01-23
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This flight number is listed as serving the following routes:


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American Airlines flight AA 521: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
American Airlines AA521
07:05
Memphis (MEM)

08:19
Phoenix Sky Harbor (PHX) 4
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:14, non-stop
Airbus A320 (320)
Direct Flights:
American Airlines AA521
08:10
Philadelphia (PHL)

10:07
Charleston (CHS)
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:57, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA521
08:10
Philadelphia (PHL)

10:11
Charleston (CHS)
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:01, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA521
08:23
Memphis (MEM)

09:39
Phoenix Sky Harbor (PHX) 4
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:16, non-stop
Airbus A320 (320)
Direct Flights:
American Airlines AA521
08:27
Memphis (MEM)

09:39
Phoenix Sky Harbor (PHX) 4
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:12, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA521
11:07
Charleston (CHS)

12:55
Philadelphia (PHL)
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:48, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA521
11:09
Charleston (CHS)

12:55
Philadelphia (PHL)
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:46, non-stop
Airbus A319 (319)
Direct Flights:
American Airlines AA521
11:29
Philadelphia (PHL)

16:30
Luis Munoz Marin, San Juan (SJU) C
Effective 2026-01-16 through 2026-01-22
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:01, non-stop
Airbus A321 (321)
Direct Flights:
American Airlines AA521
11:29
Philadelphia (PHL)

16:30
Luis Munoz Marin, San Juan (SJU) C
Effective 2026-01-24 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:01, non-stop
Airbus A321 (321)
Direct Flights:
American Airlines AA521
11:32
Philadelphia (PHL)

16:33
Luis Munoz Marin, San Juan (SJU) C
Effective 2026-01-06 through 2026-01-15
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:01, non-stop
Airbus A321 (321)
Direct Flights:
American Airlines AA521
11:32
Philadelphia (PHL)

16:33
Luis Munoz Marin, San Juan (SJU) C
Operates only on 2026-01-23
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 4:01, non-stop
Airbus A321 (321)
Direct Flights:
American Airlines AA521
17:20
Luis Munoz Marin, San Juan (SJU) C

20:32
Philadelphia (PHL)
Effective 2026-01-16 through 2026-01-22
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 4:12, non-stop
Airbus A321 (321)
Direct Flights:
American Airlines AA521
17:20
Luis Munoz Marin, San Juan (SJU) C

20:32
Philadelphia (PHL)
Effective 2026-01-24 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 4:12, non-stop
Airbus A321 (321)
Direct Flights:
American Airlines AA521
17:23
Luis Munoz Marin, San Juan (SJU) C

20:35
Philadelphia (PHL)
Effective 2026-01-08 through 2026-01-15
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 4:12, non-stop
Airbus A321 (321)
Direct Flights:
American Airlines AA521
17:23
Luis Munoz Marin, San Juan (SJU) C

20:35
Philadelphia (PHL)
Operates only on 2026-01-23
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 4:12, non-stop
Airbus A321 (321)
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This flight number is listed as serving the following routes:
  • Memphis (MEM) - Phoenix Sky Harbor (PHX)
  • Philadelphia (PHL) - Charleston (CHS)
  • Philadelphia (PHL) - Luis Munoz Marin, San Juan (SJU)
All American Airlines flights
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