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)Liberia, CR (LIR)to
Seattle (SEA)Liberia, CR (LIR)to
San Francisco (SFO)Liberia, CR (LIR)to
San Francisco (SFO)Liberia, CR (LIR)to
San Francisco (SFO)*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 2, 2026 | From $191 Seen: 9 hours ago | |
| Liberia, CR (LIR) | Portland (PDX) | One-way | Saver | Depart: Feb 27, 2026 | From $206 Seen: 7 hours ago | |
| San Jose, CR (SJO) | Portland (PDX) | One-way | Saver | Depart: Mar 6, 2026 | From $218 Seen: 5 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Mar 10, 2026 | From $227 Seen: 17 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Mar 11, 2026 | From $227 Seen: 17 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Apr 21, 2026 | From $228 Seen: 11 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Mar 6, 2026 | From $237 Seen: 17 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Mar 14, 2026 | From $239 Seen: 17 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Apr 16, 2026 | From $247 Seen: 11 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Mar 12, 2026 | From $248 Seen: 17 hours ago | |
| San Jose, CR (SJO) | Seattle (SEA) | One-way | Saver | Depart: Mar 5, 2026 | From $258 Seen: 17 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Mar 15, 2026 | From $283 Seen: 5 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Oct 10, 2026 | From $306 Seen: 8 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Jun 14, 2026 | From $308 Seen: 8 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Apr 23, 2026 | From $314 Seen: 11 hours ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Mar 31, 2026 | From $331 Seen: 2 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Apr 14, 2026 | From $388 Seen: 4 minutes ago | |
| Liberia, CR (LIR) | Seattle (SEA) | One-way | Saver | Depart: Jun 14, 2026 | From $401 Seen: 8 hours ago | |
| Liberia, CR (LIR) | Portland (PDX) | One-way | Saver | Depart: Feb 28, 2026 | From $449 Seen: 7 hours ago | |
| Liberia, CR (LIR) | San Francisco (SFO) | One-way | Saver | Depart: Apr 9, 2026 | From $456 Seen: 8 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.