Alaska Airlines Flights from United States to Costa Rica
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Deals on flights from United States to Costa Rica.*
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Los Angeles (LAX)to
Liberia, CR (LIR)Depart: Oct 5, 2026
From
$320
Seen: 1 hour ago
One-way
Main
Los Angeles (LAX)to
Liberia, CR (LIR)Depart: Sep 19, 2026
From
$344
Seen: 4 hours ago
One-way
Main
Los Angeles (LAX)to
Liberia, CR (LIR)Depart: Sep 26, 2026
From
$344
Seen: 10 hours ago
One-way
Main
Los Angeles (LAX)to
San Jose, CR (SJO)Depart: Sep 11, 2026
From
$348
Seen: 7 hours ago
One-way
Main
Los Angeles (LAX)to
San Jose, CR (SJO)Depart: Sep 26, 2026
From
$367
Seen: 7 hours ago
One-way
Main
Los Angeles (LAX)to
San Jose, CR (SJO)Depart: Sep 19, 2026
From
$367
Seen: 1 hour ago
One-way
Main
Los Angeles (LAX)to
San Jose, CR (SJO)Depart: Sep 25, 2026
From
$457
Seen: 5 hours ago
One-way
Main
Los Angeles (LAX)to
San Jose, CR (SJO)Depart: Oct 2, 2026
From
$727
Seen: 6 hours ago
One-way
Main
Seattle (SEA)to
San Jose, CR (SJO)Depart: Oct 6, 2026
From
$544
Seen: 7 hours ago
One-way
Main
Seattle (SEA)to
San Jose, CR (SJO)Depart: Oct 1, 2026
From
$876
Seen: 9 hours ago
One-way
Main
San Diego (SAN)to
San Jose, CR (SJO)Depart: Sep 19, 2026
From
$683
Seen: 1 hour ago
One-way
Main
*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 United States to Costa Rica.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Oct 12, 2026 | From $219 Seen: 9 hours ago | |
| San Diego (SAN) | Liberia, CR (LIR) | One-way | Saver | Depart: Apr 11, 2027 | From $255 Seen: 9 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Jun 21, 2027 | From $260 Seen: 2 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Aug 4, 2027 | From $276 Seen: 7 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Dec 28, 2026 | From $313 Seen: 11 hours ago | |
| Portland (PDX) | San Jose, CR (SJO) | One-way | Saver | Depart: Jan 29, 2027 | From $352 Seen: 7 hours ago | |
| Spokane (GEG) | Liberia, CR (LIR) | One-way | Saver | Depart: Nov 29, 2026 | From $415 Seen: 7 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Nov 15, 2026 | From $417 Seen: 11 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Dec 9, 2026 | From $417 Seen: 7 hours ago | |
| Spokane (GEG) | Liberia, CR (LIR) | One-way | Saver | Depart: Feb 13, 2027 | From $423 Seen: 7 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.