American Airlines flight AA 4377: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Daily 05:19 Pittsburgh (PIT) 06:10 Chicago O'Hare (ORD) 3
AA 4377 Non-stop Embraer EMB 175 (E75) 1:51 Effective 2026-04-07 through 2026-05-20
Daily 06:00 New York LaGuardia (LGA) B 07:46 Chicago O'Hare (ORD) 3
AA 4377 Non-stop Embraer EMB 175 (E75) 2:46 Valid until 2026-01-05
Daily 06:00 New York LaGuardia (LGA) B 07:20 Boston Logan (BOS) B
AA 4377 Non-stop Embraer EMB 175 (E75) 1:20 Effective 2026-05-21 through 2026-07-01
Daily 07:50 Boston Logan (BOS) B 09:10 New York LaGuardia (LGA) B
AA 4377 Non-stop Embraer EMB 175 (E75) 1:20 Effective 2026-05-21 through 2026-06-03
Mon-Fri,Sun 08:00 Chicago O'Hare (ORD) 3 11:35 Jacksonville (JAX)
AA 4377 Non-stop Embraer EMB 175 (E75) 2:35 Effective 2026-03-08 through 2026-04-06
Daily 08:00 Boston Logan (BOS) B 09:20 New York LaGuardia (LGA) B
AA 4377 Non-stop Embraer EMB 175 (E75) 1:20 Effective 2026-06-04 through 2026-07-01
Daily 08:10 Philadelphia (PHL) 09:49 Cleveland (CLE)
AA 4377 Non-stop Embraer EMB 175 (E75) 1:39 Effective from 2026-10-05
Mon,Wed-Fri 09:55 Chicago O'Hare (ORD) 3 13:27 Jacksonville (JAX)
AA 4377 Non-stop Embraer EMB 175 (E75) 2:32 Effective 2026-02-12 through 2026-02-20
Mon,Wed-Fri,Sun 09:55 Chicago O'Hare (ORD) 3 13:27 Jacksonville (JAX)
AA 4377 Non-stop Embraer EMB 175 (E75) 2:32 Effective 2026-02-22 through 2026-03-06
Daily 10:30 New York LaGuardia (LGA) B 11:45 Boston Logan (BOS) B
AA 4377 Non-stop Embraer EMB 175 (E75) 1:15 Effective 2026-07-02 through 2026-08-04
Daily 11:15 New York LaGuardia (LGA) B 13:08 John Glenn Columbus (CMH)
AA 4377 Non-stop Embraer EMB 175 (E75) 1:53 Effective 2026-09-09 through 2026-10-04
Daily 11:28 Cleveland (CLE) 12:55 Philadelphia (PHL)
AA 4377 Non-stop Embraer EMB 175 (E75) 1:27 Effective from 2026-10-05
Daily 11:59 New York LaGuardia (LGA) B 13:43 Cleveland (CLE)
AA 4377 Non-stop Embraer EMB 175 (E75) 1:44 Effective 2026-08-05 through 2026-09-08
Mon-Fri,Sun 12:05 Jacksonville (JAX) 14:01 Chicago O'Hare (ORD) 3
AA 4377 Non-stop Embraer EMB 175 (E75) 2:56 Effective 2026-03-08 through 2026-04-06
Daily 12:15 Boston Logan (BOS) B 13:33 New York LaGuardia (LGA) B
AA 4377 Non-stop Embraer EMB 175 (E75) 1:18 Effective 2026-07-02 through 2026-08-04
Daily 13:45 John Glenn Columbus (CMH) 15:30 New York LaGuardia (LGA) B
AA 4377 Non-stop Embraer EMB 175 (E75) 1:45 Effective 2026-09-09 through 2026-10-04
Mon,Wed-Fri 13:58 Jacksonville (JAX) 15:52 Chicago O'Hare (ORD) 3
AA 4377 Non-stop Embraer EMB 175 (E75) 2:54 Effective 2026-02-12 through 2026-02-20
Mon,Wed-Fri,Sun 13:58 Jacksonville (JAX) 15:52 Chicago O'Hare (ORD) 3
AA 4377 Non-stop Embraer EMB 175 (E75) 2:54 Effective 2026-02-22 through 2026-03-06
Daily 14:20 Cleveland (CLE) 16:00 New York LaGuardia (LGA) B
AA 4377 Non-stop Embraer EMB 175 (E75) 1:40 Effective 2026-08-05 through 2026-09-08
Mon-Fri,Sun 16:45 New York LaGuardia (LGA) B 18:23 Richmond (RIC)
AA 4377 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:38 Effective 2026-01-06 through 2026-02-11
Mon-Fri,Sun 18:54 Richmond (RIC) 20:21 New York LaGuardia (LGA) B
AA 4377 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:27 Effective 2026-01-06 through 2026-02-11
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This flight number is listed as serving the following routes:


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American Airlines flight AA 4377: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
American Airlines AA4377
05:19
Pittsburgh (PIT)

06:10
Chicago O'Hare (ORD) 3
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:51, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
06:00
New York LaGuardia (LGA) B

07:46
Chicago O'Hare (ORD) 3
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:46, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
06:00
New York LaGuardia (LGA) B

07:20
Boston Logan (BOS) B
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:20, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
07:50
Boston Logan (BOS) B

09:10
New York LaGuardia (LGA) B
Effective 2026-05-21 through 2026-06-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:20, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
08:00
Chicago O'Hare (ORD) 3

11:35
Jacksonville (JAX)
Effective 2026-03-08 through 2026-04-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:35, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
08:00
Boston Logan (BOS) B

09:20
New York LaGuardia (LGA) B
Effective 2026-06-04 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:20, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
08:10
Philadelphia (PHL)

09:49
Cleveland (CLE)
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:39, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
09:55
Chicago O'Hare (ORD) 3

13:27
Jacksonville (JAX)
Effective 2026-02-12 through 2026-02-20
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:32, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
09:55
Chicago O'Hare (ORD) 3

13:27
Jacksonville (JAX)
Effective 2026-02-22 through 2026-03-06
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:32, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
10:30
New York LaGuardia (LGA) B

11:45
Boston Logan (BOS) B
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:15, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
11:15
New York LaGuardia (LGA) B

13:08
John Glenn Columbus (CMH)
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:53, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
11:28
Cleveland (CLE)

12:55
Philadelphia (PHL)
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:27, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
11:59
New York LaGuardia (LGA) B

13:43
Cleveland (CLE)
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:44, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
12:05
Jacksonville (JAX)

14:01
Chicago O'Hare (ORD) 3
Effective 2026-03-08 through 2026-04-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:56, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
12:15
Boston Logan (BOS) B

13:33
New York LaGuardia (LGA) B
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:18, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
13:45
John Glenn Columbus (CMH)

15:30
New York LaGuardia (LGA) B
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
13:58
Jacksonville (JAX)

15:52
Chicago O'Hare (ORD) 3
Effective 2026-02-12 through 2026-02-20
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:54, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
13:58
Jacksonville (JAX)

15:52
Chicago O'Hare (ORD) 3
Effective 2026-02-22 through 2026-03-06
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:54, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
14:20
Cleveland (CLE)

16:00
New York LaGuardia (LGA) B
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:40, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4377
16:45
New York LaGuardia (LGA) B

18:23
Richmond (RIC)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:38, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA4377
18:54
Richmond (RIC)

20:21
New York LaGuardia (LGA) B
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:27, non-stop
Embraer EMB 170 / EMB 175 (E70)
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This flight number is listed as serving the following routes:
  • Boston Logan (BOS) - New York LaGuardia (LGA)
  • Chicago O'Hare (ORD) - Jacksonville (JAX)
  • Cleveland (CLE) - New York LaGuardia (LGA)
  • Cleveland (CLE) - Philadelphia (PHL)
  • New York LaGuardia (LGA) - Chicago O'Hare (ORD)
  • New York LaGuardia (LGA) - John Glenn Columbus (CMH)
  • Pittsburgh (PIT) - Chicago O'Hare (ORD)
  • Richmond (RIC) - New York LaGuardia (LGA)
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