American Airlines flight AA 4399: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Daily 06:42 Madison (MSN) 09:50 Philadelphia (PHL)
AA 4399 Non-stop Embraer EMB 175 (E75) 2:08 Effective 2025-08-06 through 2025-09-02
Daily 12:15 Boston Logan (BOS) B 13:48 Philadelphia (PHL)
AA 4399 Non-stop Embraer EMB 175 (E75) 1:33 Valid until 2025-05-03
Thu 12:20 Boston Logan (BOS) B 13:54 Philadelphia (PHL)
AA 4399 Non-stop Embraer EMB 175 (E75) 1:34 Operates only on 2025-05-22
Tue,Wed 12:29 Boston Logan (BOS) B 14:03 Philadelphia (PHL)
AA 4399 Non-stop Embraer EMB 175 (E75) 1:34 Effective 2025-05-06 through 2025-06-04
Mon,Thu-Sun 12:32 Boston Logan (BOS) B 14:13 Philadelphia (PHL)
AA 4399 Non-stop Embraer EMB 175 (E75) 1:41 Effective 2025-05-05 through 2025-05-19
Mon,Thu-Sun 12:32 Boston Logan (BOS) B 14:13 Philadelphia (PHL)
AA 4399 Non-stop Embraer EMB 175 (E75) 1:41 Effective 2025-05-23 through 2025-06-02
Daily 12:59 Ronald Reagan Washington (DCA) 2 14:33 John Glenn Columbus (CMH)
AA 4399 Non-stop Embraer EMB 175 (E75) 1:34 Effective 2025-11-02 through 2025-12-02
Daily 12:59 Ronald Reagan Washington (DCA) 2 14:30 John Glenn Columbus (CMH)
AA 4399 Non-stop Embraer EMB 175 (E75) 1:31 Effective 2025-12-03 through 2025-12-17
Daily 12:59 Ronald Reagan Washington (DCA) 2 14:29 John Glenn Columbus (CMH)
AA 4399 Non-stop Embraer EMB 175 (E75) 1:30 Effective 2026-01-06 through 2026-02-11
Daily 12:59 Ronald Reagan Washington (DCA) 2 14:30 John Glenn Columbus (CMH)
AA 4399 Non-stop Embraer EMB 175 (E75) 1:31 Effective from 2026-02-12
Mon-Fri,Sun 16:12 Chicago O'Hare (ORD) 3 19:19 Raleigh/Durham (RDU) 2
AA 4399 Non-stop Embraer EMB 175 (E75) 2:07 Effective 2025-07-06 through 2025-08-05
Daily 16:12 Chicago O'Hare (ORD) 3 19:19 Raleigh/Durham (RDU) 2
AA 4399 Non-stop Embraer EMB 175 (E75) 2:07 Effective 2025-09-03 through 2025-10-05
Sat 16:40 Chicago O'Hare (ORD) 3 19:48 Raleigh/Durham (RDU) 2
AA 4399 Non-stop Embraer EMB 175 (E75) 2:08 Effective 2025-06-07 through 2025-06-28
Sat 16:45 Chicago O'Hare (ORD) 3 19:52 Raleigh/Durham (RDU) 2
AA 4399 Non-stop Embraer EMB 175 (E75) 2:07 Effective 2025-07-05 through 2025-08-02
Mon-Fri,Sun 16:50 Chicago O'Hare (ORD) 3 19:58 Raleigh/Durham (RDU) 2
AA 4399 Non-stop Embraer EMB 175 (E75) 2:08 Effective 2025-06-05 through 2025-06-30
Thu 16:50 Chicago O'Hare (ORD) 3 19:58 Raleigh/Durham (RDU) 2
AA 4399 Non-stop Embraer EMB 175 (E75) 2:08 Operates only on 2025-07-03
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This flight number is listed as serving the following routes:


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American Airlines flight AA 4399: Multiple routes
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Select flight date:  Show Calendar
FLIGHT SCHEDULE
Direct Flights:
American Airlines AA4399
06:42
Madison (MSN)

09:50
Philadelphia (PHL)
Effective 2025-08-06 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:08, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
12:15
Boston Logan (BOS) B

13:48
Philadelphia (PHL)
Valid until 2025-05-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:33, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
12:20
Boston Logan (BOS) B

13:54
Philadelphia (PHL)
Operates only on 2025-05-22
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:34, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
12:29
Boston Logan (BOS) B

14:03
Philadelphia (PHL)
Effective 2025-05-06 through 2025-06-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:34, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
12:32
Boston Logan (BOS) B

14:13
Philadelphia (PHL)
Effective 2025-05-05 through 2025-05-19
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:41, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
12:32
Boston Logan (BOS) B

14:13
Philadelphia (PHL)
Effective 2025-05-23 through 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:41, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
12:59
Ronald Reagan Washington (DCA) 2

14:33
John Glenn Columbus (CMH)
Effective 2025-11-02 through 2025-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:34, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
12:59
Ronald Reagan Washington (DCA) 2

14:30
John Glenn Columbus (CMH)
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:31, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
12:59
Ronald Reagan Washington (DCA) 2

14:29
John Glenn Columbus (CMH)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:30, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
12:59
Ronald Reagan Washington (DCA) 2

14:30
John Glenn Columbus (CMH)
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:31, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
16:12
Chicago O'Hare (ORD) 3

19:19
Raleigh/Durham (RDU) 2
Effective 2025-07-06 through 2025-08-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:07, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
16:12
Chicago O'Hare (ORD) 3

19:19
Raleigh/Durham (RDU) 2
Effective 2025-09-03 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:07, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
16:40
Chicago O'Hare (ORD) 3

19:48
Raleigh/Durham (RDU) 2
Effective 2025-06-07 through 2025-06-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:08, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
16:45
Chicago O'Hare (ORD) 3

19:52
Raleigh/Durham (RDU) 2
Effective 2025-07-05 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:07, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
16:50
Chicago O'Hare (ORD) 3

19:58
Raleigh/Durham (RDU) 2
Effective 2025-06-05 through 2025-06-30
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:08, non-stop
Embraer EMB 175 (E75)
American Airlines AA4399
16:50
Chicago O'Hare (ORD) 3

19:58
Raleigh/Durham (RDU) 2
Operates only on 2025-07-03
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:08, non-stop
Embraer EMB 175 (E75)
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This flight number is listed as serving the following routes:
  • Boston Logan (BOS) - Philadelphia (PHL)
  • Chicago O'Hare (ORD) - Raleigh/Durham (RDU)
  • Madison (MSN) - Philadelphia (PHL)
  • Ronald Reagan Washington (DCA) - John Glenn Columbus (CMH)
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