Iberia flight IB 4603: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Tue,Thu,Sat,Sun 06:38 Ontario, Los Angeles (ONT) 4 11:39 Dallas Fort Worth (DFW)
IB 4603 Non-stop Airbus A321 (321) 3:01 Effective from 2026-10-25
Codeshare flight, operated by American Airlines.(AA 1412)
Daily 06:43 Ontario, Los Angeles (ONT) 4 11:39 Dallas Fort Worth (DFW)
IB 4603 Non-stop Airbus A321 (321) 2:56 Effective 2026-04-07 through 2026-05-20
Codeshare flight, operated by American Airlines.(AA 3136)
Daily 08:15 Ontario, Los Angeles (ONT) 4 13:19 Dallas Fort Worth (DFW)
IB 4603 Non-stop Boeing 737 MAX 8 (7M8) 3:04 Effective 2026-08-05 through 2026-09-08
Codeshare flight, operated by American Airlines.(AA 2893)
Daily 08:42 Ontario, Los Angeles (ONT) 4 13:45 Dallas Fort Worth (DFW)
IB 4603 Non-stop Airbus A321 (321) 3:03 Effective 2026-07-02 through 2026-08-04
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 2026-05-21 through 2026-07-01
Codeshare flight, operated by American Airlines.(AA 2893)
Daily 08:45 Ontario, Los Angeles (ONT) 4 13:45 Dallas Fort Worth (DFW)
IB 4603 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-09-09 through 2026-10-04
Codeshare flight, operated by American Airlines.(AA 2893)
Sat 11:50 Saint Louis (STL) 1 15:30 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:40 Effective 2026-03-14 through 2026-04-04
Codeshare flight, operated by American Airlines.(AA 4031)
Mon-Fri,Sun 11:59 Saint Louis (STL) 1 15:40 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:41 Effective 2026-03-08 through 2026-04-06
Codeshare flight, operated by American Airlines.(AA 4415)
Sat 12:00 Saint Louis (STL) 1 15:37 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:37 Effective 2026-02-21 through 2026-03-07
Codeshare flight, operated by American Airlines.(AA 3416)
Mon,Wed-Fri,Sun 14:50 Saint Louis (STL) 1 18:29 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:39 Valid until 2026-01-05
Codeshare flight, operated by American Airlines.(AA 3416)
Mon,Wed-Fri,Sun 14:54 Saint Louis (STL) 1 18:31 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:37 Effective 2026-01-07 through 2026-01-18
Codeshare flight, operated by American Airlines.(AA 3416)
Wed,Fri,Sun 14:54 Saint Louis (STL) 1 18:31 Boston Logan (BOS) B
IB 4603 Non-stop Embraer EMB 175 (E75) 2:37 Effective 2026-01-21 through 2026-02-11
Codeshare flight, operated by American Airlines.(AA 3416)
This flight number is listed as serving the following routes:


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Iberia flight IB 4603: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Iberia IB4603
06:38
Ontario, Los Angeles (ONT) 4

11:39
Dallas Fort Worth (DFW)
Effective from 2026-10-25
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1412)
Duration: 3:01, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Iberia IB4603
06:43
Ontario, Los Angeles (ONT) 4

11:39
Dallas Fort Worth (DFW)
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3136)
Duration: 2:56, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Iberia IB4603
08:15
Ontario, Los Angeles (ONT) 4

13:19
Dallas Fort Worth (DFW)
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2893)
Duration: 3:04, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Iberia IB4603
08:42
Ontario, Los Angeles (ONT) 4

13:45
Dallas Fort Worth (DFW)
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2893)
Duration: 3:03, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Iberia IB4603
08:43
Ontario, Los Angeles (ONT) 4

13:45
Dallas Fort Worth (DFW)
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2893)
Duration: 3:02, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Iberia IB4603
08:45
Ontario, Los Angeles (ONT) 4

13:45
Dallas Fort Worth (DFW)
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2893)
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Iberia IB4603
11:50
Saint Louis (STL) 1

15:30
Boston Logan (BOS) B
Effective 2026-03-14 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 4031)
Duration: 2:40, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4603
11:59
Saint Louis (STL) 1

15:40
Boston Logan (BOS) B
Effective 2026-03-08 through 2026-04-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4415)
Duration: 2:41, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4603
12:00
Saint Louis (STL) 1

15:37
Boston Logan (BOS) B
Effective 2026-02-21 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 3416)
Duration: 2:37, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4603
14:50
Saint Louis (STL) 1

18:29
Boston Logan (BOS) B
Valid until 2026-01-05
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 3416)
Duration: 2:39, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4603
14:54
Saint Louis (STL) 1

18:31
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: 2:37, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Iberia IB4603
14:54
Saint Louis (STL) 1

18:31
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: 2:37, non-stop
Embraer EMB 175 (E75)
This flight number is listed as serving the following routes:
  • Ontario, Los Angeles (ONT) - Dallas Fort Worth (DFW)
  • Saint Louis (STL) - Boston Logan (BOS)
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