All airlines flying from Saint Louis (STL) to Ontario, Los Angeles (ONT).

Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:
Mon,Thu,Fri 19:55 Saint Louis (STL) 2 23:20 Ontario, Los Angeles (ONT) 4
Southwest Airlines WN 1949 1-stop Boeing 737-800 (73H) 5:25 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 19:55 Saint Louis (STL) 2 23:20 Ontario, Los Angeles (ONT) 4
Southwest Airlines WN 1949 1-stop Boeing 737-800 (73H) 5:25 Effective 2026-02-20 through 2026-03-01
Sun 08:25 Saint Louis (STL) 2 12:50 Ontario, Los Angeles (ONT) 4
Southwest Airlines WN 3865 1-stop Boeing 737-700 (Scimitar Winglets) 6:25 Effective 2026-03-08 through 2026-04-05
Sat 09:45 Saint Louis (STL) 2 14:20 Ontario, Los Angeles (ONT) 4
Southwest Airlines WN 381 2-stop Boeing 737-700 (Scimitar Winglets) 6:35 Effective 2026-02-14 through 2026-02-28
Mon,Thu,Fri 15:10 Saint Louis (STL) 2 20:45 Ontario, Los Angeles (ONT) 4
Southwest Airlines WN 1052 2-stop Boeing 737-700 (Scimitar Winglets) 7:35 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 15:10 Saint Louis (STL) 2 20:45 Ontario, Los Angeles (ONT) 4
Southwest Airlines WN 1052 2-stop Boeing 737-700 (Scimitar Winglets) 7:35 Effective 2026-02-20 through 2026-03-01




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All airlines flying from Saint Louis (STL) to Ontario, Los Angeles (ONT).
Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:
Southwest Airlines WN1949
19:55
Saint Louis (STL) 2

23:20
Ontario, Los Angeles (ONT) 4
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 5:25, 1-stop
Boeing 737-800 (73H)
Non-Direct Flights:
Southwest Airlines WN1949
19:55
Saint Louis (STL) 2

23:20
Ontario, Los Angeles (ONT) 4
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 5:25, 1-stop
Boeing 737-800 (73H)
Non-Direct Flights:
Southwest Airlines WN3865
08:25
Saint Louis (STL) 2

12:50
Ontario, Los Angeles (ONT) 4
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 6:25, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN381
09:45
Saint Louis (STL) 2

14:20
Ontario, Los Angeles (ONT) 4
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 6:35, 2-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1052
15:10
Saint Louis (STL) 2

20:45
Ontario, Los Angeles (ONT) 4
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 7:35, 2-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1052
15:10
Saint Louis (STL) 2

20:45
Ontario, Los Angeles (ONT) 4
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 7:35, 2-stop
Boeing 737-700 (Scimitar Winglets)
  • A domestic route departing from the Saint Louis airport (STL) and arriving at Ontario, Los Angeles airport (ONT).
  • The flight distance is 1542 miles, or 2481 km.
  • The timezone of the departure airport is UTC-6 , 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.
Return (ONT-STL) flights
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