Alaska Airlines Cheap Flights from San Francisco to Costa Rica
Deals on one-way flights from San Francisco to Costa Rica.*
San Francisco (SFO)to
Liberia, CR (LIR)San Francisco (SFO)to
Liberia, CR (LIR)San Francisco (SFO)to
Liberia, CR (LIR)San Francisco (SFO)to
Liberia, CR (LIR)San Francisco (SFO)to
Liberia, CR (LIR)San Francisco (SFO)to
San Jose, CR (SJO)San Francisco (SFO)to
San Jose, CR (SJO)*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.
One-way low-fare flights San Francisco to Costa Rica.*
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| San Francisco (SFO) | San Jose, CR (SJO) | One-way | Saver | Depart: May 17, 2026 | From $236 Seen: 17 hours ago | |
| San Francisco (SFO) | San Jose, CR (SJO) | One-way | Saver | Depart: Jan 31, 2026 | From $278 Seen: 20 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Apr 2, 2026 | From $421 Seen: 21 hours ago | |
| San Francisco (SFO) | San Jose, CR (SJO) | One-way | Saver | Depart: Oct 15, 2026 | From $603 Seen: 1 day ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Mar 21, 2026 | From $935 Seen: 16 hours ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.