American Airlines flight AA 4373: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Daily 06:00 Boston Logan (BOS) B 07:19 New York John F. Kennedy (JFK) 8
AA 4373 Non-stop Embraer EMB 175 (E75) 1:19 Effective 2026-01-06 through 2026-02-11
Daily 08:00 Boston Logan (BOS) B 09:22 New York LaGuardia (LGA) B
AA 4373 Non-stop Embraer EMB 175 (E75) 1:22 Effective 2026-09-09 through 2026-10-04
Daily 08:20 New York LaGuardia (LGA) B 09:27 Boston Logan (BOS) B
AA 4373 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:07 Effective 2026-06-04 through 2026-07-01
Daily 08:40 New York LaGuardia (LGA) B 09:47 Boston Logan (BOS) B
AA 4373 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:07 Effective 2026-05-21 through 2026-06-03
Fri 09:08 Chicago O'Hare (ORD) 3 11:20 Memphis (MEM)
AA 4373 Non-stop Embraer EMB 175 (E75) 2:12 Operates only on 2026-01-02
Mon,Thu,Fri,Sun 09:10 Chicago O'Hare (ORD) 3 11:07 Memphis (MEM)
AA 4373 Non-stop Embraer EMB 175 (E75) 1:57 Effective 2026-02-12 through 2026-03-06
Mon-Fri,Sun 09:10 Chicago O'Hare (ORD) 3 11:12 Memphis (MEM)
AA 4373 Non-stop Embraer EMB 175 (E75) 2:02 Effective 2026-03-08 through 2026-04-06
Sun 09:11 Chicago O'Hare (ORD) 3 11:22 Memphis (MEM)
AA 4373 Non-stop Embraer EMB 175 (E75) 2:11 Operates only on 2026-01-04
Mon-Thu 09:18 Chicago O'Hare (ORD) 3 11:29 Memphis (MEM)
AA 4373 Non-stop Embraer EMB 175 (E75) 2:11 Valid until 2026-01-05
Sat 09:50 Chicago O'Hare (ORD) 3 11:56 Memphis (MEM)
AA 4373 Non-stop Embraer EMB 175 (E75) 2:06 Valid until 2026-01-03
Daily 10:27 Boston Logan (BOS) B 11:42 New York LaGuardia (LGA) B
AA 4373 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:15 Effective 2026-06-04 through 2026-07-01
Daily 10:30 Boston Logan (BOS) B 11:45 New York LaGuardia (LGA) B
AA 4373 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:15 Effective 2026-05-21 through 2026-06-03
Daily 11:40 Chicago O'Hare (ORD) 3 15:04 Boston Logan (BOS) B
AA 4373 Non-stop Embraer EMB 175 (E75) 2:24 Effective 2026-04-07 through 2026-05-20
Mon,Thu,Fri,Sun 11:46 Memphis (MEM) 13:49 Chicago O'Hare (ORD) 3
AA 4373 Non-stop Embraer EMB 175 (E75) 2:03 Effective 2026-02-12 through 2026-03-09
Mon-Fri,Sun 11:46 Memphis (MEM) 13:49 Chicago O'Hare (ORD) 3
AA 4373 Non-stop Embraer EMB 175 (E75) 2:03 Effective 2026-03-10 through 2026-04-06
Fri 11:50 Memphis (MEM) 13:52 Chicago O'Hare (ORD) 3
AA 4373 Non-stop Embraer EMB 175 (E75) 2:02 Operates only on 2026-01-02
Sun 11:52 Memphis (MEM) 13:54 Chicago O'Hare (ORD) 3
AA 4373 Non-stop Embraer EMB 175 (E75) 2:02 Operates only on 2026-01-04
Mon-Thu 12:00 Memphis (MEM) 14:02 Chicago O'Hare (ORD) 3
AA 4373 Non-stop Embraer EMB 175 (E75) 2:02 Valid until 2026-01-05
Sat 12:33 Memphis (MEM) 14:34 Chicago O'Hare (ORD) 3
AA 4373 Non-stop Embraer EMB 175 (E75) 2:01 Valid until 2026-01-03
Daily 13:03 Ronald Reagan Washington (DCA) 2 14:42 Boston Logan (BOS) B
AA 4373 Non-stop Embraer EMB 175 (E75) 1:39 Effective 2026-08-05 through 2026-09-08
Daily 13:36 New York John F. Kennedy (JFK) 8 15:14 Nashville (BNA)
AA 4373 Non-stop Embraer EMB 175 (E75) 2:38 Effective 2026-07-02 through 2026-08-04
Daily 15:12 Boston Logan (BOS) B 17:08 Ronald Reagan Washington (DCA) 2
AA 4373 Non-stop Embraer EMB 175 (E75) 1:56 Effective 2026-08-05 through 2026-09-08
Daily 16:26 Nashville (BNA) 19:59 New York John F. Kennedy (JFK) 8
AA 4373 Non-stop Embraer EMB 175 (E75) 2:33 Effective 2026-07-02 through 2026-08-04
Daily 17:46 Boston Logan (BOS) B 19:50 Chicago O'Hare (ORD) 3
AA 4373 Non-stop Embraer EMB 175 (E75) 3:04 Effective 2026-04-07 through 2026-05-20
Daily 19:48 New York LaGuardia (LGA) B 21:10 Ronald Reagan Washington (DCA) 2
AA 4373 Non-stop Embraer EMB 175 (E75) 1:22 Effective from 2026-10-05
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This flight number is listed as serving the following routes:


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American Airlines flight AA 4373: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
American Airlines AA4373
06:00
Boston Logan (BOS) B

07:19
New York John F. Kennedy (JFK) 8
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:19, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
08:00
Boston Logan (BOS) B

09:22
New York LaGuardia (LGA) B
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:22, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
08:20
New York LaGuardia (LGA) B

09:27
Boston Logan (BOS) B
Effective 2026-06-04 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:07, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA4373
08:40
New York LaGuardia (LGA) B

09:47
Boston Logan (BOS) B
Effective 2026-05-21 through 2026-06-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:07, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA4373
09:08
Chicago O'Hare (ORD) 3

11:20
Memphis (MEM)
Operates only on 2026-01-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:12, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
09:10
Chicago O'Hare (ORD) 3

11:07
Memphis (MEM)
Effective 2026-02-12 through 2026-03-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:57, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
09:10
Chicago O'Hare (ORD) 3

11:12
Memphis (MEM)
Effective 2026-03-08 through 2026-04-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:02, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
09:11
Chicago O'Hare (ORD) 3

11:22
Memphis (MEM)
Operates only on 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:11, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
09:18
Chicago O'Hare (ORD) 3

11:29
Memphis (MEM)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:11, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
09:50
Chicago O'Hare (ORD) 3

11:56
Memphis (MEM)
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:06, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
10:27
Boston Logan (BOS) B

11:42
New York LaGuardia (LGA) B
Effective 2026-06-04 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:15, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA4373
10:30
Boston Logan (BOS) B

11:45
New York LaGuardia (LGA) B
Effective 2026-05-21 through 2026-06-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:15, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA4373
11:40
Chicago O'Hare (ORD) 3

15:04
Boston Logan (BOS) B
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:24, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
11:46
Memphis (MEM)

13:49
Chicago O'Hare (ORD) 3
Effective 2026-02-12 through 2026-03-09
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:03, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
11:46
Memphis (MEM)

13:49
Chicago O'Hare (ORD) 3
Effective 2026-03-10 through 2026-04-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:03, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
11:50
Memphis (MEM)

13:52
Chicago O'Hare (ORD) 3
Operates only on 2026-01-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:02, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
11:52
Memphis (MEM)

13:54
Chicago O'Hare (ORD) 3
Operates only on 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:02, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
12:00
Memphis (MEM)

14:02
Chicago O'Hare (ORD) 3
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:02, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
12:33
Memphis (MEM)

14:34
Chicago O'Hare (ORD) 3
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:01, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
13:03
Ronald Reagan Washington (DCA) 2

14:42
Boston Logan (BOS) B
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:39, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
13:36
New York John F. Kennedy (JFK) 8

15:14
Nashville (BNA)
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:38, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
15:12
Boston Logan (BOS) B

17:08
Ronald Reagan Washington (DCA) 2
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:56, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
16:26
Nashville (BNA)

19:59
New York John F. Kennedy (JFK) 8
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:33, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
17:46
Boston Logan (BOS) B

19:50
Chicago O'Hare (ORD) 3
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:04, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4373
19:48
New York LaGuardia (LGA) B

21:10
Ronald Reagan Washington (DCA) 2
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:22, non-stop
Embraer EMB 175 (E75)
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This flight number is listed as serving the following routes:
  • Boston Logan (BOS) - Chicago O'Hare (ORD)
  • Boston Logan (BOS) - New York John F. Kennedy (JFK)
  • Boston Logan (BOS) - New York LaGuardia (LGA)
  • Boston Logan (BOS) - Ronald Reagan Washington (DCA)
  • Memphis (MEM) - Chicago O'Hare (ORD)
  • New York John F. Kennedy (JFK) - Nashville (BNA)
  • New York LaGuardia (LGA) - Ronald Reagan Washington (DCA)
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