American Airlines flight AA 3657: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 06:16 Moline (MLI) 07:30 Chicago O'Hare (ORD) 3
AA 3657 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:14 Effective 2025-10-26 through 2025-11-01
Daily 07:20 Dallas Fort Worth (DFW) 08:59 McAllen/Mission (MFE)
AA 3657 Non-stop Embraer EMB 175 (E75) 1:39 Effective 2025-07-05 through 2025-08-05
Daily 08:00 Chicago O'Hare (ORD) 3 12:16 Key West (EYW)
AA 3657 Non-stop Embraer EMB 175 (E75) 3:16 Effective 2025-11-02 through 2025-12-02
Daily 08:00 Chicago O'Hare (ORD) 3 12:25 Key West (EYW)
AA 3657 Non-stop Embraer EMB 170 / EMB 175 (E70) 3:25 Effective 2025-12-03 through 2025-12-17
Daily 08:00 Chicago O'Hare (ORD) 3 12:37 Key West (EYW)
AA 3657 Non-stop Embraer EMB 170 / EMB 175 (E70) 3:37 Effective 2025-12-18 through 2026-01-05
Daily 08:00 Chicago O'Hare (ORD) 3 12:24 Key West (EYW)
AA 3657 Non-stop Embraer EMB 170 / EMB 175 (E70) 3:24 Effective 2026-01-06 through 2026-02-11
Daily 08:00 Chicago O'Hare (ORD) 3 12:22 Key West (EYW)
AA 3657 Non-stop Embraer EMB 170 / EMB 175 (E70) 3:22 Effective from 2026-02-12
Sat 09:46 Chicago O'Hare (ORD) 3 10:54 Appleton (ATW)
AA 3657 Non-stop Embraer EMB 175 (E75) 1:08 Valid until 2025-05-03
Daily 09:57 Dallas Fort Worth (DFW) 11:28 Harlingen (HRL)
AA 3657 Non-stop Embraer EMB 175 (E75) 1:31 Effective 2025-05-05 through 2025-06-04
Daily 09:57 Dallas Fort Worth (DFW) 11:57 Harlingen (HRL)
AA 3657 Non-stop Embraer EMB 170 / EMB 175 (E70) 2:00 Effective 2025-10-06 through 2025-10-25
Daily 13:33 Key West (EYW) 16:10 Chicago O'Hare (ORD) 3
AA 3657 Non-stop Embraer EMB 170 / EMB 175 (E70) 3:37 Effective 2025-12-03 through 2025-12-17
Daily 13:39 Key West (EYW) 16:10 Chicago O'Hare (ORD) 3
AA 3657 Non-stop Embraer EMB 175 (E75) 3:31 Effective 2025-11-02 through 2025-12-02
Daily 13:39 Key West (EYW) 16:10 Chicago O'Hare (ORD) 3
AA 3657 Non-stop Embraer EMB 170 / EMB 175 (E70) 3:31 Effective 2025-12-18 through 2026-01-05
Daily 13:42 Key West (EYW) 16:10 Chicago O'Hare (ORD) 3
AA 3657 Non-stop Embraer EMB 170 / EMB 175 (E70) 3:28 Effective from 2026-02-12
Daily 14:29 Key West (EYW) 17:00 Chicago O'Hare (ORD) 3
AA 3657 Non-stop Embraer EMB 170 / EMB 175 (E70) 3:31 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 3657: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
American Airlines AA3657
06:16
Moline (MLI)

07:30
Chicago O'Hare (ORD) 3
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:14, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3657
07:20
Dallas Fort Worth (DFW)

08:59
McAllen/Mission (MFE)
Effective 2025-07-05 through 2025-08-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:39, non-stop
Embraer EMB 175 (E75)
American Airlines AA3657
08:00
Chicago O'Hare (ORD) 3

12:16
Key West (EYW)
Effective 2025-11-02 through 2025-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:16, non-stop
Embraer EMB 175 (E75)
American Airlines AA3657
08:00
Chicago O'Hare (ORD) 3

12:25
Key West (EYW)
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:25, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3657
08:00
Chicago O'Hare (ORD) 3

12:37
Key West (EYW)
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:37, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3657
08:00
Chicago O'Hare (ORD) 3

12:24
Key West (EYW)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:24, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3657
08:00
Chicago O'Hare (ORD) 3

12:22
Key West (EYW)
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:22, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3657
09:46
Chicago O'Hare (ORD) 3

10:54
Appleton (ATW)
Valid until 2025-05-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:08, non-stop
Embraer EMB 175 (E75)
American Airlines AA3657
09:57
Dallas Fort Worth (DFW)

11:28
Harlingen (HRL)
Effective 2025-05-05 through 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:31, non-stop
Embraer EMB 175 (E75)
American Airlines AA3657
09:57
Dallas Fort Worth (DFW)

11:57
Harlingen (HRL)
Effective 2025-10-06 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:00, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3657
13:33
Key West (EYW)

16:10
Chicago O'Hare (ORD) 3
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:37, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3657
13:39
Key West (EYW)

16:10
Chicago O'Hare (ORD) 3
Effective 2025-11-02 through 2025-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:31, non-stop
Embraer EMB 175 (E75)
American Airlines AA3657
13:39
Key West (EYW)

16:10
Chicago O'Hare (ORD) 3
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:31, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3657
13:42
Key West (EYW)

16:10
Chicago O'Hare (ORD) 3
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:28, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3657
14:29
Key West (EYW)

17:00
Chicago O'Hare (ORD) 3
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:31, non-stop
Embraer EMB 170 / EMB 175 (E70)
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Appleton (ATW)
  • Dallas Fort Worth (DFW) - Harlingen (HRL)
  • Dallas Fort Worth (DFW) - McAllen/Mission (MFE)
  • Key West (EYW) - Chicago O'Hare (ORD)
  • Moline (MLI) - Chicago O'Hare (ORD)
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