Alaska Airlines Flights from Costa Rica to United States
Deals on one-way flights from Costa Rica to United States.*
San Jose, CR (SJO)to
Seattle (SEA)San Jose, CR (SJO)to
Seattle (SEA)San Jose, CR (SJO)to
Seattle (SEA)San Jose, CR (SJO)to
Seattle (SEA)San Jose, CR (SJO)to
Seattle (SEA)*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 Costa Rica to United States.*
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Mar 7, 2026 | From $191 Seen: 12 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Mar 10, 2026 | From $227 Seen: 9 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Mar 11, 2026 | From $227 Seen: 9 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Mar 6, 2026 | From $237 Seen: 9 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Mar 5, 2026 | From $237 Seen: 9 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Mar 6, 2026 | From $252 Seen: 1 hour ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Mar 8, 2026 | From $254 Seen: 12 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: May 20, 2026 | From $261 Seen: 9 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Jun 3, 2026 | From $261 Seen: 9 hours ago | |
| Liberia, CR (LIR) | Portland (PDX) | One-way | Saver | Depart: Apr 22, 2026 | From $305 Seen: 17 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Jun 19, 2026 | From $306 Seen: 17 hours ago | |
| Liberia, CR (LIR) | Portland (PDX) | One-way | Saver | Depart: Mar 29, 2026 | From $673 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.