Alaska Airlines Cheap Flights from San Francisco to Costa Rica
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Deals on roundtrip flights from San Francisco to Costa Rica.*
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San Francisco (SFO)to
Liberia, CR (LIR)Sep 5, 2026 - Sep 12, 2026
From
$1,146
Seen: 1 day ago
Round-trip
Saver
San Francisco (SFO)to
San Jose, CR (SJO)Aug 15, 2026 - Sep 5, 2026
From
$850
Seen: 1 day ago
Round-trip
Saver
*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.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Sep 11, 2026 | From $277 Seen: 18 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Feb 6, 2027 | From $300 Seen: 1 day ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Jun 13, 2027 | From $304 Seen: 1 day ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Nov 2, 2026 | From $320 Seen: 23 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Dec 13, 2026 | From $338 Seen: 14 hours ago | |
| San Francisco (SFO) | San Jose, CR (SJO) | One-way | Saver | Depart: Apr 12, 2027 | From $351 Seen: 3 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Sep 15, 2026 | From $355 Seen: 1 day ago | |
| San Francisco (SFO) | San Jose, CR (SJO) | One-way | Saver | Depart: Feb 4, 2027 | From $363 Seen: 22 hours ago | |
| San Francisco (SFO) | San Jose, CR (SJO) | One-way | Saver | Depart: Sep 17, 2026 | From $384 Seen: 1 day ago | |
| San Francisco (SFO) | San Jose, CR (SJO) | One-way | Saver | Depart: Sep 8, 2026 | From $404 Seen: 18 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.