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)Seattle (SEA)to
Liberia, CR (LIR)Seattle (SEA)to
Liberia, CR (LIR)Seattle (SEA)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
Liberia, CR (LIR)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: Apr 15, 2026 | From $148 Seen: 10 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Apr 24, 2026 | From $148 Seen: 10 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Apr 28, 2026 | From $148 Seen: 10 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: May 7, 2026 | From $148 Seen: 10 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: May 11, 2026 | From $148 Seen: 10 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: May 12, 2026 | From $148 Seen: 10 hours ago | |
| Portland (PDX) | Liberia, CR (LIR) | One-way | Saver | Depart: Mar 15, 2026 | From $157 Seen: 3 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: May 12, 2026 | From $159 Seen: 13 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Mar 18, 2026 | From $159 Seen: 13 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Mar 24, 2026 | From $159 Seen: 17 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Feb 23, 2026 | From $159 Seen: 14 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Mar 17, 2026 | From $159 Seen: 14 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Mar 10, 2026 | From $179 Seen: 10 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Mar 9, 2026 | From $188 Seen: 10 hours ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Mar 8, 2026 | From $188 Seen: 10 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Mar 29, 2026 | From $189 Seen: 1 hour ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: May 2, 2026 | From $199 Seen: 1 hour ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Apr 11, 2026 | From $203 Seen: 17 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Mar 14, 2026 | From $203 Seen: 13 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Mar 9, 2026 | From $203 Seen: 14 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.