Southwest® flights from Ontario/LA to Costa Rica
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Popular flight deals and low fares from Ontario/LA
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Ontario/LA (ONT)to
Liberia, Costa Rica (LIR)Depart: 11/13/2026
From
$285
Seen: 4 hrs ago
One-way
Basic
Ontario/LA (ONT)to
San Jose, Costa Rica (SJO)Depart: 11/04/2026
From
$371
Seen: 14 hrs ago
One-way
Basic
*Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.
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From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| Ontario/LA (ONT) | San Jose, Costa Rica (SJO) | One-way / Basic | Depart: 12/07/2026 | From $294 Seen: 22 hrs ago |
| Ontario/LA (ONT) | Liberia, Costa Rica (LIR) | One-way / Choice | Depart: 12/14/2026 | From $528 Seen: 20 hrs ago |
*Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.
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