Book Cheap Flights from Costa Rica with Alaska Airlines
Find round-trip flight deals from Costa Rica.*
Liberia, CR (LIR)to
Seattle (SEA)San Jose, CR (SJO)to
Seattle (SEA)
San Jose, CR (SJO)to
Portland (PDX)*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.
Lowest one-way fares from Costa Rica.*
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Feb 5, 2026 | From $182 Seen: 11 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Feb 12, 2026 | From $182 Seen: 11 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Jan 22, 2026 | From $182 Seen: 11 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Jan 23, 2026 | From $182 Seen: 11 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Jan 28, 2026 | From $182 Seen: 11 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Jan 29, 2026 | From $182 Seen: 11 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Mar 2, 2026 | From $234 Seen: 21 minutes ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Feb 7, 2026 | From $243 Seen: 9 minutes ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Mar 15, 2026 | From $243 Seen: 13 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Jan 17, 2026 | From $255 Seen: 4 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Jan 24, 2026 | From $255 Seen: 2 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Mar 14, 2026 | From $255 Seen: 16 hours ago | |
| Liberia, CR (LIR) | Portland (PDX) | One-way | Saver | Depart: Feb 15, 2026 | From $262 Seen: 4 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: May 13, 2026 | From $283 Seen: 2 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: May 6, 2026 | From $325 Seen: 17 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Feb 23, 2026 | From $465 Seen: 16 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Mar 30, 2026 | From $476 Seen: 2 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Jan 27, 2026 | From $618 Seen: 2 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.