Iberia
flight
IB 4321:
Multiple routes
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FLIGHT SCHEDULE
Direct Codeshare Flights:
Iberia IB4321
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4189)
Duration: 1:41, non-stop Embraer EMB 170 / EMB 175 (E70)
Iberia IB4321
Effective 2026-01-06 through 2026-01-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4189)
Duration: 1:40, non-stop Embraer EMB 170 / EMB 175 (E70)
Iberia IB4321
Effective 2026-01-22 through 2026-02-01
Mon
Tue
Wed
-
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4189)
Duration: 1:40, non-stop Embraer EMB 170 / EMB 175 (E70)
Iberia IB4321
Effective 2026-02-03 through 2026-02-10
Mon
-
-
Tue
Wed
-
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4189)
Duration: 1:40, non-stop Embraer EMB 170 / EMB 175 (E70)
Iberia IB4321
Effective 2025-10-06 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 3509)
Duration: 1:36, non-stop Embraer EMB 170 / EMB 175 (E70)
Iberia IB4321
Effective 2026-02-12 through 2026-02-22
Mon
-
-
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4189)
Duration: 1:33, non-stop Embraer EMB 170 / EMB 175 (E70)
Iberia IB4321
Effective from 2026-02-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4189)
Duration: 1:33, non-stop Embraer EMB 170 / EMB 175 (E70)
Iberia IB4321
Effective 2025-05-07 through 2025-06-04
Mon
-
-
Tue
-
-
Wed
Thu
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-
Fri
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-
Sat
-
-
Sun
-
-
Codeshare flight, operated by American Airlines.
(AA 4913)
Duration: 1:43, non-stop Canadair CRJ 700 (CR7)
Iberia IB4321
Effective 2025-05-05 through 2025-05-12
Mon
Tue
-
-
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
Codeshare flight, operated by American Airlines.
(AA 4913)
Duration: 1:43, non-stop Canadair CRJ 700 (CR7)
Iberia IB4321
Effective 2025-05-13 through 2025-06-03
Mon
Tue
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
Codeshare flight, operated by American Airlines.
(AA 4913)
Duration: 1:43, non-stop Canadair CRJ 700 (CR7)
Iberia IB4321
Valid until 2025-05-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4913)
Duration: 1:43, non-stop Canadair CRJ 700 (CR7)
Iberia IB4321
Effective 2025-08-06 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 3509)
Duration: 1:35, non-stop Embraer EMB 170 / EMB 175 (E70)
Iberia IB4321
Effective 2025-06-05 through 2025-07-03
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by American Airlines.
(AA 3033)
Duration: 1:25, non-stop Boeing 737-800 (738)
Iberia IB4321
Effective 2025-07-10 through 2025-07-31
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by American Airlines.
(AA 3033)
Duration: 1:25, non-stop Boeing 737-800 (738)
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This flight number is listed as serving the following routes:
- Brownsville (BRO) - Dallas Fort Worth (DFW)
- Kansas City (MCI) - Chicago O'Hare (ORD)
- Louisville (SDF) - Chicago O'Hare (ORD)
- San Francisco (SFO) - Los Angeles (LAX)
- Springfield (SGF) - Chicago O'Hare (ORD)