American Airlines flight AA 4377: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 05:10 Buffalo (BUF) 06:05 Chicago O'Hare (ORD) 3
AA 4377 Non-stop Embraer EMB 175 (E75) 1:55 Effective 2025-05-05 through 2025-05-24
Daily 05:10 Buffalo (BUF) 06:05 Chicago O'Hare (ORD) 3
AA 4377 Non-stop Embraer EMB 175 (E75) 1:55 Effective 2025-05-26 through 2025-06-04
Mon-Fri,Sun 05:25 Pittsburgh (PIT) 06:16 Chicago O'Hare (ORD) 3
AA 4377 Non-stop Embraer EMB 175 (E75) 1:51 Valid until 2025-05-04
Daily 06:00 Ronald Reagan Washington (DCA) 2 07:37 Boston Logan (BOS) B
AA 4377 Non-stop Embraer EMB 175 (E75) 1:37 Effective from 2026-02-12
Sun 08:10 Philadelphia (PHL) 09:19 Norfolk (ORF)
AA 4377 Non-stop Embraer EMB 175 (E75) 1:09 Effective 2025-07-06 through 2025-08-03
Sun 09:49 Norfolk (ORF) 11:01 Philadelphia (PHL)
AA 4377 Non-stop Embraer EMB 175 (E75) 1:12 Effective 2025-07-06 through 2025-08-03
Sun 10:11 Buffalo (BUF) 11:07 Chicago O'Hare (ORD) 3
AA 4377 Non-stop Embraer EMB 175 (E75) 1:56 Operates only on 2025-05-25
Daily 12:24 Chicago O'Hare (ORD) 3 14:37 Traverse City (TVC)
AA 4377 Non-stop Embraer EMB 175 (E75) 1:13 Effective 2025-09-03 through 2025-10-05
Sat 14:10 Halifax (YHZ) 15:43 Ronald Reagan Washington (DCA) 2
AA 4377 Non-stop Embraer EMB 175 (E75) 2:33 Effective 2025-06-07 through 2025-06-28
Sat 14:15 Halifax (YHZ) 15:50 Ronald Reagan Washington (DCA) 2
AA 4377 Non-stop Embraer EMB 175 (E75) 2:35 Effective 2025-07-05 through 2025-08-02
Fri 14:50 New York LaGuardia (LGA) B 16:16 Charlottesville (CHO)
AA 4377 Non-stop Embraer EMB 175 (E75) 1:26 Effective 2025-06-06 through 2025-06-13
Sun 15:00 New York LaGuardia (LGA) B 16:31 Charlottesville (CHO)
AA 4377 Non-stop Embraer EMB 175 (E75) 1:31 Effective 2025-06-08 through 2025-06-15
Fri 16:55 Charlottesville (CHO) 18:19 New York LaGuardia (LGA) B
AA 4377 Non-stop Embraer EMB 175 (E75) 1:24 Effective 2025-06-06 through 2025-06-13
Sun 17:05 Charlottesville (CHO) 18:29 New York LaGuardia (LGA) B
AA 4377 Non-stop Embraer EMB 175 (E75) 1:24 Effective 2025-06-08 through 2025-06-15
Daily 18:30 Philadelphia (PHL) 20:31 Bangor (BGR)
AA 4377 Non-stop Embraer EMB 175 (E75) 2:01 Effective 2025-08-06 through 2025-09-02
Daily 21:00 Philadelphia (PHL) 22:40 Cleveland Hopkins (CLE)
AA 4377 Non-stop Embraer EMB 175 (E75) 1:40 Effective 2025-10-06 through 2025-11-01
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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
05:10
Buffalo (BUF)

06:05
Chicago O'Hare (ORD) 3
Effective 2025-05-05 through 2025-05-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:55, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
05:10
Buffalo (BUF)

06:05
Chicago O'Hare (ORD) 3
Effective 2025-05-26 through 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:55, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
05:25
Pittsburgh (PIT)

06:16
Chicago O'Hare (ORD) 3
Valid until 2025-05-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:51, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
06:00
Ronald Reagan Washington (DCA) 2

07:37
Boston Logan (BOS) B
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:37, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
08:10
Philadelphia (PHL)

09:19
Norfolk (ORF)
Effective 2025-07-06 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:09, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
09:49
Norfolk (ORF)

11:01
Philadelphia (PHL)
Effective 2025-07-06 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:12, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
10:11
Buffalo (BUF)

11:07
Chicago O'Hare (ORD) 3
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:56, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
12:24
Chicago O'Hare (ORD) 3

14:37
Traverse City (TVC)
Effective 2025-09-03 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:13, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
14:10
Halifax (YHZ)

15:43
Ronald Reagan Washington (DCA) 2
Effective 2025-06-07 through 2025-06-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:33, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
14:15
Halifax (YHZ)

15:50
Ronald Reagan Washington (DCA) 2
Effective 2025-07-05 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:35, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
14:50
New York LaGuardia (LGA) B

16:16
Charlottesville (CHO)
Effective 2025-06-06 through 2025-06-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:26, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
15:00
New York LaGuardia (LGA) B

16:31
Charlottesville (CHO)
Effective 2025-06-08 through 2025-06-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:31, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
16:55
Charlottesville (CHO)

18:19
New York LaGuardia (LGA) B
Effective 2025-06-06 through 2025-06-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:24, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
17:05
Charlottesville (CHO)

18:29
New York LaGuardia (LGA) B
Effective 2025-06-08 through 2025-06-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:24, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
18:30
Philadelphia (PHL)

20:31
Bangor (BGR)
Effective 2025-08-06 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:01, non-stop
Embraer EMB 175 (E75)
American Airlines AA4377
21:00
Philadelphia (PHL)

22:40
Cleveland Hopkins (CLE)
Effective 2025-10-06 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:40, non-stop
Embraer EMB 175 (E75)
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This flight number is listed as serving the following routes:
  • Buffalo (BUF) - Chicago O'Hare (ORD)
  • Charlottesville (CHO) - New York LaGuardia (LGA)
  • Chicago O'Hare (ORD) - Traverse City (TVC)
  • Halifax (YHZ) - Ronald Reagan Washington (DCA)
  • Norfolk (ORF) - Philadelphia (PHL)
  • Philadelphia (PHL) - Bangor (BGR)
  • Philadelphia (PHL) - Cleveland Hopkins (CLE)
  • Pittsburgh (PIT) - Chicago O'Hare (ORD)
  • Ronald Reagan Washington (DCA) - Boston Logan (BOS)
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