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
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)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)Seattle (SEA)to
Liberia, CR (LIR)San Francisco (SFO)to
Liberia, CR (LIR)San Francisco (SFO)to
Liberia, CR (LIR)San Francisco (SFO)to
San Jose, CR (SJO)San Francisco (SFO)to
San Jose, CR (SJO)San Francisco (SFO)to
San Jose, CR (SJO)*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) | Liberia, CR (LIR) | One-way | Saver | Depart: Jul 14, 2026 | From $245 Seen: 9 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Aug 1, 2026 | From $245 Seen: 6 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Jan 17, 2027 | From $245 Seen: 16 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Jun 3, 2026 | From $260 Seen: 2 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Jul 27, 2026 | From $260 Seen: 2 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Sep 12, 2026 | From $260 Seen: 2 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Sep 18, 2026 | From $260 Seen: 2 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: May 27, 2026 | From $260 Seen: 2 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: May 29, 2026 | From $260 Seen: 2 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: May 25, 2026 | From $265 Seen: 2 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Aug 2, 2026 | From $265 Seen: 2 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Aug 3, 2026 | From $265 Seen: 2 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Aug 12, 2026 | From $265 Seen: 2 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: May 31, 2026 | From $265 Seen: 2 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Jun 1, 2026 | From $265 Seen: 2 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Aug 2, 2026 | From $289 Seen: 10 hours ago | |
| Portland (PDX) | San Jose, CR (SJO) | One-way | Saver | Depart: Sep 19, 2026 | From $319 Seen: 13 hours ago | |
| Seattle (SEA) | Liberia, CR (LIR) | One-way | Saver | Depart: Jan 16, 2027 | From $328 Seen: 16 hours ago | |
| Seattle (SEA) | Liberia, CR (LIR) | One-way | Saver | Depart: Jan 25, 2027 | From $328 Seen: 8 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Jul 5, 2026 | From $341 Seen: 12 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.