American Airlines
flight
AA 4121:
Multiple routes
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FLIGHT SCHEDULE
Direct Flights:
American Airlines AA4121
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:19, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4121
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:16, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4121
Effective 2026-05-21 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:58, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4121
Effective 2026-05-21 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:38, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4121
Effective 2026-03-14 through 2026-04-04
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Duration: 2:47, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4121
Effective 2026-02-14 through 2026-03-07
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Duration: 2:48, non-stop
Embraer EMB 175 (E75)
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA4121
Effective 2026-01-10 through 2026-02-07
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Duration: 2:51, non-stop
Embraer EMB 170 / EMB 175 (E70)
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA4121
Valid until 2026-01-03
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Duration: 2:38, non-stop
Embraer EMB 170 / EMB 175 (E70)
Embraer EMB 170 / EMB 175 (E70)
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This flight number is listed as serving the following routes:
- Green Bay (GRB) - Chicago O'Hare (ORD)
- Miami (MIA) - Cincinnati (CVG)
- Miami (MIA) - Lexington (LEX)