Book Cheap Flights to Costa Rica on Alaska Airlines
Great Costa Rica one-way flight deals.*
Los Angeles (LAX)to
Liberia, CR (LIR)Los Angeles (LAX)to
Liberia, CR (LIR)Los Angeles (LAX)to
Liberia, CR (LIR)Los Angeles (LAX)to
Liberia, CR (LIR)Los Angeles (LAX)to
Liberia, CR (LIR)Los Angeles (LAX)to
San Jose, CR (SJO)Los Angeles (LAX)to
San Jose, CR (SJO)Los Angeles (LAX)to
San Jose, CR (SJO)Los Angeles (LAX)to
San Jose, CR (SJO)Los Angeles (LAX)to
San Jose, CR (SJO)Portland (PDX)to
Liberia, CR (LIR)San Francisco (SFO)to
Liberia, CR (LIR)Seattle (SEA)to
San Jose, CR (SJO)Seattle (SEA)to
San Jose, CR (SJO)Seattle (SEA)to
San Jose, CR (SJO)Seattle (SEA)to
San Jose, CR (SJO)Seattle (SEA)to
San Jose, CR (SJO)San Francisco (SFO)to
San Jose, CR (SJO)San Francisco (SFO)to
San Jose, CR (SJO)San Francisco (SFO)to
Liberia, CR (LIR)*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 offers for plane tickets to Costa Rica.*
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Nov 11, 2026 | From $152 Seen: 14 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Jun 1, 2026 | From $244 Seen: 10 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Jun 2, 2026 | From $244 Seen: 10 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: May 19, 2026 | From $245 Seen: 10 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: May 27, 2026 | From $245 Seen: 10 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: May 29, 2026 | From $245 Seen: 10 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: May 31, 2026 | From $245 Seen: 10 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Jun 2, 2026 | From $245 Seen: 10 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: May 30, 2026 | From $245 Seen: 2 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Jul 25, 2026 | From $245 Seen: 16 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Aug 28, 2026 | From $245 Seen: 16 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Dec 9, 2026 | From $245 Seen: 14 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: May 30, 2026 | From $261 Seen: 10 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: May 18, 2026 | From $265 Seen: 10 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: May 25, 2026 | From $265 Seen: 10 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Jun 3, 2026 | From $265 Seen: 10 hours ago | |
| Portland (PDX) | Liberia, CR (LIR) | One-way | Saver | Depart: Aug 28, 2026 | From $266 Seen: 15 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: May 26, 2026 | From $286 Seen: 2 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Jul 8, 2026 | From $318 Seen: 14 hours ago | |
| Seattle (SEA) | Liberia, CR (LIR) | One-way | Saver | Depart: Jul 8, 2026 | From $328 Seen: 1 hour 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.