Southwest Airlines flights from Ontario, Los Angeles (ONT) to Baltimore (BWI).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Tue,Wed 12:00 Ontario, Los Angeles (ONT) 4 19:50 Baltimore (BWI)
Southwest Airlines WN 344 Non-stop Boeing 737-800 (73H) 4:50 Effective 2025-10-07 through 2025-10-29
Sat 11:30 Ontario, Los Angeles (ONT) 4 19:15 Baltimore (BWI)
Southwest Airlines WN 611 Non-stop Boeing 737-800 (73H) 4:45 Effective 2025-11-08 through 2025-11-15
Sat 11:30 Ontario, Los Angeles (ONT) 4 19:15 Baltimore (BWI)
Southwest Airlines WN 611 Non-stop Boeing 737-800 (73H) 4:45 Effective 2025-12-06 through 2025-12-13
Sat 09:50 Ontario, Los Angeles (ONT) 4 17:35 Baltimore (BWI)
Southwest Airlines WN 1015 Non-stop Boeing 737 MAX 8 (7M8) 4:45 Effective 2025-11-22 through 2025-11-29
Sat 09:50 Ontario, Los Angeles (ONT) 4 17:35 Baltimore (BWI)
Southwest Airlines WN 1015 Non-stop Boeing 737 MAX 8 (7M8) 4:45 Effective 2025-12-20 through 2026-01-03
Mon-Wed 09:30 Ontario, Los Angeles (ONT) 4 17:15 Baltimore (BWI)
Southwest Airlines WN 1708 Non-stop Boeing 737 MAX 8 (7M8) 4:45 Effective 2025-11-25 through 2025-12-01
Mon,Tue,Fri,Sun 09:30 Ontario, Los Angeles (ONT) 4 17:15 Baltimore (BWI)
Southwest Airlines WN 1708 Non-stop Boeing 737 MAX 8 (7M8) 4:45 Effective 2025-12-19 through 2026-01-04
Mon,Thu,Fri,Sun 10:50 Ontario, Los Angeles (ONT) 4 18:35 Baltimore (BWI)
Southwest Airlines WN 1945 Non-stop Boeing 737-800 (73H) 4:45 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 10:50 Ontario, Los Angeles (ONT) 4 18:35 Baltimore (BWI)
Southwest Airlines WN 1945 Non-stop Boeing 737-800 (73H) 4:45 Effective 2025-11-21 through 2025-11-28
Fri,Sun 10:50 Ontario, Los Angeles (ONT) 4 18:35 Baltimore (BWI)
Southwest Airlines WN 1945 Non-stop Boeing 737-800 (73H) 4:45 Effective 2025-12-07 through 2025-12-14
Thu 10:50 Ontario, Los Angeles (ONT) 4 18:35 Baltimore (BWI)
Southwest Airlines WN 1945 Non-stop Boeing 737-800 (73H) 4:45 Operates only on 2025-12-18
Mon 10:50 Ontario, Los Angeles (ONT) 4 18:35 Baltimore (BWI)
Southwest Airlines WN 1945 Non-stop Boeing 737-800 (73H) 4:45 Operates only on 2026-01-05
Sun 09:55 Ontario, Los Angeles (ONT) 4 17:50 Baltimore (BWI)
Southwest Airlines WN 2200 Non-stop Boeing 737-700 (Scimitar Winglets) 4:55 Effective 2025-10-05 through 2025-10-26
Sat 12:05 Ontario, Los Angeles (ONT) 4 19:55 Baltimore (BWI)
Southwest Airlines WN 2201 Non-stop Boeing 737-800 (73H) 4:50 Effective 2025-10-04 through 2025-11-01
Mon,Thu,Fri 12:50 Ontario, Los Angeles (ONT) 4 20:35 Baltimore (BWI)
Southwest Airlines WN 2201 Non-stop Boeing 737 MAX 8 (7M8) 4:45 Effective 2025-10-02 through 2025-10-31
Sun 05:00 Ontario, Los Angeles (ONT) 4 12:40 Baltimore (BWI)
Southwest Airlines WN 3585 Non-stop Boeing 737 MAX 8 (7M8) 4:40 Operates only on 2025-11-30
Tue,Wed 10:55 Ontario, Los Angeles (ONT) 4 18:50 Baltimore (BWI)
Southwest Airlines WN 3940 Non-stop Boeing 737-800 (73H) 4:55 Effective 2025-08-05 through 2025-10-01
Sat 11:35 Ontario, Los Angeles (ONT) 4 19:30 Baltimore (BWI)
Southwest Airlines WN 3940 Non-stop Boeing 737 MAX 8 (7M8) 4:55 Effective 2025-08-09 through 2025-09-27
Mon,Thu,Fri 12:45 Ontario, Los Angeles (ONT) 4 20:35 Baltimore (BWI)
Southwest Airlines WN 3940 Non-stop Boeing 737-800 (73H) 4:50 Effective 2025-08-07 through 2025-09-29
Daily 21:20 Ontario, Los Angeles (ONT) 4 05:10 Baltimore (BWI)
Southwest Airlines WN 4132 Non-stop Boeing 737 MAX 8 (7M8) 4:50 Effective 2025-06-05 through 2025-08-04
The flight arrives 1 day after departure.
Sun 09:15 Ontario, Los Angeles (ONT) 4 17:10 Baltimore (BWI)
Southwest Airlines WN 4787 Non-stop Boeing 737-800 (73H) 4:55 Effective 2025-08-10 through 2025-08-24
Sun 09:15 Ontario, Los Angeles (ONT) 4 17:10 Baltimore (BWI)
Southwest Airlines WN 4787 Non-stop Boeing 737-800 (73H) 4:55 Effective 2025-09-07 through 2025-09-28




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Southwest Airlines flights from Ontario, Los Angeles (ONT) to Baltimore (BWI).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN344
12:00
Ontario, Los Angeles (ONT) 4

19:50
Baltimore (BWI)
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN611
11:30
Ontario, Los Angeles (ONT) 4

19:15
Baltimore (BWI)
Effective 2025-11-08 through 2025-11-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN611
11:30
Ontario, Los Angeles (ONT) 4

19:15
Baltimore (BWI)
Effective 2025-12-06 through 2025-12-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN1015
09:50
Ontario, Los Angeles (ONT) 4

17:35
Baltimore (BWI)
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN1015
09:50
Ontario, Los Angeles (ONT) 4

17:35
Baltimore (BWI)
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN1708
09:30
Ontario, Los Angeles (ONT) 4

17:15
Baltimore (BWI)
Effective 2025-11-25 through 2025-12-01
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN1708
09:30
Ontario, Los Angeles (ONT) 4

17:15
Baltimore (BWI)
Effective 2025-12-19 through 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 4:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN1945
10:50
Ontario, Los Angeles (ONT) 4

18:35
Baltimore (BWI)
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN1945
10:50
Ontario, Los Angeles (ONT) 4

18:35
Baltimore (BWI)
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 4:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN1945
10:50
Ontario, Los Angeles (ONT) 4

18:35
Baltimore (BWI)
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 4:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN1945
10:50
Ontario, Los Angeles (ONT) 4

18:35
Baltimore (BWI)
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN1945
10:50
Ontario, Los Angeles (ONT) 4

18:35
Baltimore (BWI)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN2200
09:55
Ontario, Los Angeles (ONT) 4

17:50
Baltimore (BWI)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN2201
12:05
Ontario, Los Angeles (ONT) 4

19:55
Baltimore (BWI)
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN2201
12:50
Ontario, Los Angeles (ONT) 4

20:35
Baltimore (BWI)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3585
05:00
Ontario, Los Angeles (ONT) 4

12:40
Baltimore (BWI)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:40, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3940
10:55
Ontario, Los Angeles (ONT) 4

18:50
Baltimore (BWI)
Effective 2025-08-05 through 2025-10-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:55, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3940
11:35
Ontario, Los Angeles (ONT) 4

19:30
Baltimore (BWI)
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:55, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3940
12:45
Ontario, Los Angeles (ONT) 4

20:35
Baltimore (BWI)
Effective 2025-08-07 through 2025-09-29
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4132
21:20
Ontario, Los Angeles (ONT) 4

05:10(+1)
Baltimore (BWI)
Effective 2025-06-05 through 2025-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:50, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Southwest Airlines WN4787
09:15
Ontario, Los Angeles (ONT) 4

17:10
Baltimore (BWI)
Effective 2025-08-10 through 2025-08-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:55, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4787
09:15
Ontario, Los Angeles (ONT) 4

17:10
Baltimore (BWI)
Effective 2025-09-07 through 2025-09-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:55, non-stop
Boeing 737-800 (73H)
  • A domestic route departing from the Ontario, Los Angeles airport (ONT) and arriving at Baltimore airport (BWI).
  • The flight distance is 2277 miles, or 3664 km.
  • The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-5 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
  • For direct flights, the flight time varies between 4:40 and 4:55.
All ONT-BWI flights
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