Iberia flight IB 4603: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 07:00 Ontario, Los Angeles (ONT) 4 11:56 Dallas Fort Worth (DFW)
IB 4603 Non-stop Airbus A321 (321) 2:56 Valid until 2025-05-04
Codeshare flight, operated by American Airlines.(AA 2893)
Daily 07:30 Ontario, Los Angeles (ONT) 4 12:29 Dallas Fort Worth (DFW)
IB 4603 Non-stop Airbus A321 (321) 2:59 Effective 2025-05-05 through 2025-06-04
Codeshare flight, operated by American Airlines.(AA 2893)
Daily 08:15 Ontario, Los Angeles (ONT) 4 13:17 Dallas Fort Worth (DFW)
IB 4603 Non-stop Airbus A321 (321) 3:02 Effective 2025-06-05 through 2025-07-04
Codeshare flight, operated by American Airlines.(AA 2893)
Daily 08:15 Ontario, Los Angeles (ONT) 4 13:18 Dallas Fort Worth (DFW)
IB 4603 Non-stop Airbus A321 (321) 3:03 Effective 2025-07-05 through 2025-08-05
Codeshare flight, operated by American Airlines.(AA 2893)
Daily 08:37 Ontario, Los Angeles (ONT) 4 13:45 Dallas Fort Worth (DFW)
IB 4603 Non-stop Airbus A321 (321) 3:08 Effective 2025-08-06 through 2025-09-02
Codeshare flight, operated by American Airlines.(AA 2893)
Daily 08:43 Ontario, Los Angeles (ONT) 4 13:45 Dallas Fort Worth (DFW)
IB 4603 Non-stop Airbus A321 (321) 3:02 Effective 2025-09-03 through 2025-10-05
Codeshare flight, operated by American Airlines.(AA 2893)
Daily 08:44 Ontario, Los Angeles (ONT) 4 13:45 Dallas Fort Worth (DFW)
IB 4603 Non-stop Airbus A321 (321) 3:01 Effective 2025-10-06 through 2025-10-25
Codeshare flight, operated by American Airlines.(AA 2893)
Daily 11:46 Saint Louis (STL) 1 15:19 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:33 Effective 2025-10-26 through 2025-11-01
Codeshare flight, operated by American Airlines.(AA 3416)
Mon,Wed-Sun 13:30 Saint Louis (STL) 1 17:10 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:40 Effective 2026-01-07 through 2026-01-18
Codeshare flight, operated by American Airlines.(AA 3416)
Wed,Fri,Sun 13:30 Saint Louis (STL) 1 17:10 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:40 Effective 2026-01-21 through 2026-02-11
Codeshare flight, operated by American Airlines.(AA 3416)
Mon,Wed,Fri-Sun 13:45 Saint Louis (STL) 1 17:17 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:32 Effective 2025-11-02 through 2025-12-01
Codeshare flight, operated by American Airlines.(AA 3416)
Mon,Wed,Fri-Sun 13:45 Saint Louis (STL) 1 17:20 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:35 Effective 2025-12-03 through 2025-12-17
Codeshare flight, operated by American Airlines.(AA 3416)
Mon,Wed-Sun 14:00 Saint Louis (STL) 1 17:34 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:34 Effective 2025-12-18 through 2026-01-05
Codeshare flight, operated by American Airlines.(AA 3416)
Daily 14:21 Saint Louis (STL) 1 17:58 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:37 Effective from 2026-02-13
Codeshare flight, operated by American Airlines.(AA 3416)
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This flight number is listed as serving the following routes:


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Iberia flight IB 4603: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Iberia IB4603
07:00
Ontario, Los Angeles (ONT) 4

11:56
Dallas Fort Worth (DFW)
Valid until 2025-05-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2893)
Duration: 2:56, non-stop
Airbus A321 (321)
Iberia IB4603
07:30
Ontario, Los Angeles (ONT) 4

12:29
Dallas Fort Worth (DFW)
Effective 2025-05-05 through 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2893)
Duration: 2:59, non-stop
Airbus A321 (321)
Iberia IB4603
08:15
Ontario, Los Angeles (ONT) 4

13:17
Dallas Fort Worth (DFW)
Effective 2025-06-05 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2893)
Duration: 3:02, non-stop
Airbus A321 (321)
Iberia IB4603
08:15
Ontario, Los Angeles (ONT) 4

13:18
Dallas Fort Worth (DFW)
Effective 2025-07-05 through 2025-08-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2893)
Duration: 3:03, non-stop
Airbus A321 (321)
Iberia IB4603
08:37
Ontario, Los Angeles (ONT) 4

13:45
Dallas Fort Worth (DFW)
Effective 2025-08-06 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2893)
Duration: 3:08, non-stop
Airbus A321 (321)
Iberia IB4603
08:43
Ontario, Los Angeles (ONT) 4

13:45
Dallas Fort Worth (DFW)
Effective 2025-09-03 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2893)
Duration: 3:02, non-stop
Airbus A321 (321)
Iberia IB4603
08:44
Ontario, Los Angeles (ONT) 4

13:45
Dallas Fort Worth (DFW)
Effective 2025-10-06 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2893)
Duration: 3:01, non-stop
Airbus A321 (321)
Iberia IB4603
11:46
Saint Louis (STL) 1

15:19
Boston Logan (BOS) B
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3416)
Duration: 2:33, non-stop
Embraer EMB 175 (E75)
Iberia IB4603
13:30
Saint Louis (STL) 1

17:10
Boston Logan (BOS) B
Effective 2026-01-07 through 2026-01-18
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3416)
Duration: 2:40, non-stop
Embraer EMB 175 (E75)
Iberia IB4603
13:30
Saint Louis (STL) 1

17:10
Boston Logan (BOS) B
Effective 2026-01-21 through 2026-02-11
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 3416)
Duration: 2:40, non-stop
Embraer EMB 175 (E75)
Iberia IB4603
13:45
Saint Louis (STL) 1

17:17
Boston Logan (BOS) B
Effective 2025-11-02 through 2025-12-01
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3416)
Duration: 2:32, non-stop
Embraer EMB 175 (E75)
Iberia IB4603
13:45
Saint Louis (STL) 1

17:20
Boston Logan (BOS) B
Effective 2025-12-03 through 2025-12-17
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3416)
Duration: 2:35, non-stop
Embraer EMB 175 (E75)
Iberia IB4603
14:00
Saint Louis (STL) 1

17:34
Boston Logan (BOS) B
Effective 2025-12-18 through 2026-01-05
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3416)
Duration: 2:34, non-stop
Embraer EMB 175 (E75)
Iberia IB4603
14:21
Saint Louis (STL) 1

17:58
Boston Logan (BOS) B
Effective from 2026-02-13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3416)
Duration: 2:37, non-stop
Embraer EMB 175 (E75)
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This flight number is listed as serving the following routes:
  • Ontario, Los Angeles (ONT) - Dallas Fort Worth (DFW)
  • Saint Louis (STL) - Boston Logan (BOS)
All Iberia flights
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