American Airlines
flight
AA 3643:
Multiple routes
FLIGHT SCHEDULE
Direct Flights:
American Airlines AA3643
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:21, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:23, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:16, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:20, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:23, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:22, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:21, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:15, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:20, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective 2026-03-10 through 2026-03-31
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
-
-
Duration: 1:39, non-stop
Embraer EMB 170 / EMB 175 (E70)
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3643
Effective 2026-03-14 through 2026-04-04
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Duration: 1:39, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective 2026-03-08 through 2026-04-06
Mon
Tue
-
-
Wed
Thu
Fri
Sat
-
-
Sun
Duration: 1:39, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective 2026-03-10 through 2026-03-31
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
-
-
Duration: 1:41, non-stop
Embraer EMB 170 / EMB 175 (E70)
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3643
Operates only on 2026-02-11
Mon
-
-
Tue
-
-
Wed
Thu
-
-
Fri
-
-
Sat
-
-
Sun
-
-
Duration: 2:00, non-stop
Embraer EMB 170 / EMB 175 (E70)
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3643
Effective 2026-01-06 through 2026-02-10
Mon
Tue
Wed
Thu
Fri
-
-
Sat
-
-
Sun
Duration: 1:59, non-stop
Embraer EMB 170 / EMB 175 (E70)
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3643
Effective 2026-03-14 through 2026-04-04
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Duration: 1:45, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3643
Effective 2026-03-08 through 2026-04-06
Mon
Tue
-
-
Wed
Thu
Fri
Sat
-
-
Sun
Duration: 1:45, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
This flight number is listed as serving the following routes:
- Brownsville (BRO) - Dallas Fort Worth (DFW)
- Chicago O'Hare (ORD) - Birmingham (BHM)
- Chicago O'Hare (ORD) - Huntsville (HSV)
- Hilton Head Island (HHH) - Charlotte (CLT)
- Midland (MAF) - Dallas Fort Worth (DFW)