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

FLIGHT SCHEDULE
Direct Flights:
Sat 17:00 Baltimore (BWI) 19:15 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 200 Non-stop Boeing 737-800 (73H) 5:15 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 20:10 Baltimore (BWI) 22:25 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 200 Non-stop Boeing 737 MAX 8 (7M8) 5:15 Effective 2026-06-04 through 2026-08-03
Tue,Wed 09:50 Baltimore (BWI) 12:05 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 991 Non-stop Boeing 737-800 (73H) 5:15 Effective 2026-06-09 through 2026-07-29
Mon 14:40 Baltimore (BWI) 17:15 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1250 Non-stop Boeing 737 MAX 8 (7M8) 5:35 Operates only on 2026-01-05
Mon,Tue,Fri,Sun 15:35 Baltimore (BWI) 18:10 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1250 Non-stop Boeing 737 MAX 8 (7M8) 5:35 Valid until 2026-01-04
Mon,Thu,Fri 11:20 Baltimore (BWI) 14:05 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1278 Non-stop Boeing 737-800 (73H) 5:45 Effective 2026-03-05 through 2026-04-06
Sun 15:10 Baltimore (BWI) 17:50 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1278 Non-stop Boeing 737 MAX 8 (7M8) 5:40 Effective 2026-03-08 through 2026-04-05
Tue,Wed 18:55 Baltimore (BWI) 21:40 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1278 Non-stop Boeing 737 MAX 8 (7M8) 5:45 Effective 2026-03-10 through 2026-04-01
Sat 20:15 Baltimore (BWI) 22:55 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1328 Non-stop Boeing 737 MAX 8 (7M8) 5:40 Valid until 2026-01-03
Sun 13:40 Baltimore (BWI) 15:55 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 2165 Non-stop Boeing 737-800 (73H) 5:15 Effective 2026-06-07 through 2026-08-02
Sun 12:30 Baltimore (BWI) 15:00 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 2416 Non-stop Boeing 737-800 (73H) 5:30 Operates only on 2026-05-24
Sun 12:40 Baltimore (BWI) 15:10 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 2416 Non-stop Boeing 737-800 (73H) 5:30 Effective 2026-04-12 through 2026-05-17
Sun 12:40 Baltimore (BWI) 15:10 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 2416 Non-stop Boeing 737-800 (73H) 5:30 Operates only on 2026-05-31
Mon,Thu,Fri 12:45 Baltimore (BWI) 15:15 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 2416 Non-stop Boeing 737-800 (73H) 5:30 Effective 2026-04-09 through 2026-06-01
Tue,Wed 13:45 Baltimore (BWI) 16:20 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 2416 Non-stop Boeing 737 MAX 8 (7M8) 5:35 Effective 2026-04-07 through 2026-06-03
Sat 19:20 Baltimore (BWI) 22:00 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 2416 Non-stop Boeing 737 MAX 8 (7M8) 5:40 Effective 2026-04-11 through 2026-05-30
Sat 13:10 Baltimore (BWI) 15:55 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 4022 Non-stop Boeing 737 MAX 8 (7M8) 5:45 Effective 2026-03-07 through 2026-04-04
Non-Direct Flights:
Sun 19:45 Baltimore (BWI) 23:40 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 977 1-stop Boeing 737 MAX 8 (7M8) 6:55 Effective 2026-06-07 through 2026-08-02
Mon,Tue,Fri,Sun 06:15 Baltimore (BWI) 10:40 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1657 1-stop Boeing 737 MAX 8 (7M8) 7:25 Valid until 2026-01-04
Thu,Fri,Sun 08:50 Baltimore (BWI) 15:30 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1031 2-stop Boeing 737-700 (Scimitar Winglets) 9:40 Effective 2026-01-11 through 2026-01-16
Mon,Sun 08:50 Baltimore (BWI) 15:30 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1031 2-stop Boeing 737-700 (Scimitar Winglets) 9:40 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 08:50 Baltimore (BWI) 15:30 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1031 2-stop Boeing 737-700 (Scimitar Winglets) 9:40 Effective 2026-02-01 through 2026-02-06
Mon,Sun 08:50 Baltimore (BWI) 15:30 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1031 2-stop Boeing 737-700 (Scimitar Winglets) 9:40 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 08:50 Baltimore (BWI) 15:30 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1031 2-stop Boeing 737-700 (Scimitar Winglets) 9:40 Effective 2026-02-17 through 2026-02-23
Mon 08:50 Baltimore (BWI) 15:30 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1031 2-stop Boeing 737-700 (Scimitar Winglets) 9:40 Operates only on 2026-03-02
Mon,Thu,Fri 13:05 Baltimore (BWI) 20:45 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1052 3-stop Boeing 737-700 (Scimitar Winglets) 10:40 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 13:05 Baltimore (BWI) 20:45 Ontario, Los Angeles (ONT) 4 Southwest Airlines WN 1052 3-stop Boeing 737-700 (Scimitar Winglets) 10:40 Effective 2026-02-20 through 2026-03-01

A domestic route departing from the Baltimore airport (BWI) and arriving at Ontario, Los Angeles airport (ONT).
The flight distance is 2277 miles, or 3664 km.
The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-8 . 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 5:15 and 5:45.

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN200

17:00

Baltimore (BWI)

19:15

Ontario, Los Angeles (ONT) 4

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 5:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN200

20:10

Baltimore (BWI)

22:25

Ontario, Los Angeles (ONT) 4

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 5:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN991

09:50

Baltimore (BWI)

12:05

Ontario, Los Angeles (ONT) 4

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 5:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1250

14:40

Baltimore (BWI)

17:15

Ontario, Los Angeles (ONT) 4

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 5:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1250

15:35

Baltimore (BWI)

18:10

Ontario, Los Angeles (ONT) 4

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 5:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1278

11:20

Baltimore (BWI)

14:05

Ontario, Los Angeles (ONT) 4

Effective 2026-03-05 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 5:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1278

15:10

Baltimore (BWI)

17:50

Ontario, Los Angeles (ONT) 4

Effective 2026-03-08 through 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1278

18:55

Baltimore (BWI)

21:40

Ontario, Los Angeles (ONT) 4

Effective 2026-03-10 through 2026-04-01

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 5:45, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1328

20:15

Baltimore (BWI)

22:55

Ontario, Los Angeles (ONT) 4

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 5:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN2165

13:40

Baltimore (BWI)

15:55

Ontario, Los Angeles (ONT) 4

Effective 2026-06-07 through 2026-08-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2416

12:30

Baltimore (BWI)

15:00

Ontario, Los Angeles (ONT) 4

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2416

12:40

Baltimore (BWI)

15:10

Ontario, Los Angeles (ONT) 4

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2416

12:40

Baltimore (BWI)

15:10

Ontario, Los Angeles (ONT) 4

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2416

12:45

Baltimore (BWI)

15:15

Ontario, Los Angeles (ONT) 4

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 5:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2416

13:45

Baltimore (BWI)

16:20

Ontario, Los Angeles (ONT) 4

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 5:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN2416

19:20

Baltimore (BWI)

22:00

Ontario, Los Angeles (ONT) 4

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 5:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4022

13:10

Baltimore (BWI)

15:55

Ontario, Los Angeles (ONT) 4

Effective 2026-03-07 through 2026-04-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 5:45, non-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN977

19:45

Baltimore (BWI)

23:40

Ontario, Los Angeles (ONT) 4

Effective 2026-06-07 through 2026-08-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 6:55, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN1657

06:15

Baltimore (BWI)

10:40

Ontario, Los Angeles (ONT) 4

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 7:25, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN1031

08:50

Baltimore (BWI)

15:30

Ontario, Los Angeles (ONT) 4

Effective 2026-01-11 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 9:40, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1031

08:50

Baltimore (BWI)

15:30

Ontario, Los Angeles (ONT) 4

Effective 2026-01-19 through 2026-01-25

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 9:40, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1031

08:50

Baltimore (BWI)

15:30

Ontario, Los Angeles (ONT) 4

Effective 2026-02-01 through 2026-02-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 9:40, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1031

08:50

Baltimore (BWI)

15:30

Ontario, Los Angeles (ONT) 4

Effective 2026-02-09 through 2026-02-15

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 9:40, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1031

08:50

Baltimore (BWI)

15:30

Ontario, Los Angeles (ONT) 4

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 9:40, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1031

08:50

Baltimore (BWI)

15:30

Ontario, Los Angeles (ONT) 4

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 9:40, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1052

13:05

Baltimore (BWI)

20:45

Ontario, Los Angeles (ONT) 4

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 10:40, 3-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1052

13:05

Baltimore (BWI)

20:45

Ontario, Los Angeles (ONT) 4

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 10:40, 3-stop
Boeing 737-700 (Scimitar Winglets)

A domestic route departing from the Baltimore airport (BWI) and arriving at Ontario, Los Angeles airport (ONT).
The flight distance is 2277 miles, or 3664 km.
The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-8 . 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 5:15 and 5:45.

All BWI-ONT flights

All Southwest Airlines flights

Return (ONT-BWI) flights

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