Iberia
flight
IB 4521:
Multiple routes
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FLIGHT SCHEDULE
Direct Codeshare Flights:
Iberia IB4521
Effective 2025-07-05 through 2025-08-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 2748)
Duration: 3:57, non-stop Airbus A321 (321)
Iberia IB4521
Valid until 2025-05-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 2748)
Duration: 3:52, non-stop Airbus A321 (321)
Iberia IB4521
Effective 2025-05-05 through 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 2748)
Duration: 4:00, non-stop Airbus A321 (321)
Iberia IB4521
Effective 2025-06-05 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 2748)
Duration: 3:55, non-stop Airbus A321 (321)
Iberia IB4521
Effective 2025-11-02 through 2025-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1748)
Duration: 0:55, non-stop Boeing 737-800 (738)
Iberia IB4521
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1748)
Duration: 0:59, non-stop Boeing 737-800 (738)
Iberia IB4521
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1748)
Duration: 1:13, non-stop Boeing 737-800 (738)
Iberia IB4521
Effective 2026-01-06 through 2026-01-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1748)
Duration: 1:05, non-stop Boeing 737-800 (738)
Iberia IB4521
Effective 2026-01-22 through 2026-02-01
Mon
Tue
Wed
-
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1748)
Duration: 1:05, non-stop Boeing 737-800 (738)
Iberia IB4521
Effective 2026-02-03 through 2026-02-10
Mon
-
-
Tue
Wed
-
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1748)
Duration: 1:05, non-stop Boeing 737-800 (738)
Iberia IB4521
Effective 2026-02-12 through 2026-02-22
Mon
-
-
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1748)
Duration: 1:00, non-stop Boeing 737-800 (738)
Iberia IB4521
Effective from 2026-02-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1748)
Duration: 1:00, non-stop Boeing 737-800 (738)
Iberia IB4521
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1748)
Duration: 1:03, non-stop Boeing 737-800 (738)
The flight arrives 1 day after departure.
Iberia IB4521
Effective 2025-08-06 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 2921)
Duration: 0:54, non-stop Boeing 737-800 (738)
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This flight number is listed as serving the following routes:
- Chicago O'Hare (ORD) - Grand Rapids (GRR)
- Seattle-Tacoma (SEA) - Dallas Fort Worth (DFW)