Alaska Airlines Flights from Costa Rica to United States
Deals on one-way flights from Costa Rica to United States.*
Liberia, CR (LIR)to
San Francisco (SFO)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) | Portland (PDX) | One-way | Saver | Depart: Jun 4, 2026 | From $243 Seen: 42 minutes ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: May 13, 2026 | From $324 Seen: 4 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: May 19, 2026 | From $324 Seen: 4 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: May 21, 2026 | From $324 Seen: 4 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: May 27, 2026 | From $324 Seen: 4 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: May 29, 2026 | From $324 Seen: 4 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Jun 2, 2026 | From $324 Seen: 4 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Aug 6, 2026 | From $345 Seen: 15 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Aug 4, 2026 | From $345 Seen: 15 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Feb 14, 2027 | From $375 Seen: 16 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: May 2, 2026 | From $375 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.