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
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)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)Spokane (GEG)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 29, 2026 | From $238 Seen: 1 hour ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Sep 12, 2026 | From $245 Seen: 11 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Oct 7, 2026 | From $245 Seen: 7 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Sep 4, 2026 | From $245 Seen: 17 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Dec 1, 2026 | From $268 Seen: 1 hour ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Nov 28, 2026 | From $277 Seen: 1 hour ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Aug 9, 2026 | From $278 Seen: 1 hour ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Aug 12, 2026 | From $278 Seen: 1 hour ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Aug 16, 2026 | From $278 Seen: 1 hour ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Oct 4, 2026 | From $300 Seen: 1 hour ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Oct 18, 2026 | From $300 Seen: 1 hour ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Aug 10, 2026 | From $300 Seen: 1 hour ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Aug 11, 2026 | From $300 Seen: 1 hour ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Aug 17, 2026 | From $300 Seen: 1 hour ago | |
| Seattle (SEA) | San Jose, CR (SJO) | One-way | Saver | Depart: Aug 16, 2026 | From $300 Seen: 1 hour ago | |
| San Francisco (SFO) | San Jose, CR (SJO) | One-way | Saver | Depart: Mar 14, 2027 | From $308 Seen: 11 hours ago | |
| Portland (PDX) | San Jose, CR (SJO) | One-way | Saver | Depart: Sep 26, 2026 | From $318 Seen: 9 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Jan 14, 2027 | From $356 Seen: 7 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Jul 30, 2026 | From $356 Seen: 17 hours ago | |
| Anchorage (ANC) | Liberia, CR (LIR) | One-way | Saver | Depart: Nov 26, 2026 | From $376 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.