Book Cheap Flights to Costa Rica on Alaska Airlines
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1 Passenger
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Find Costa Rica roundtrip flight deals.*
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Los Angeles (LAX)to
Liberia, CR (LIR)Sep 4, 2026 - Sep 5, 2026
From
$672
Seen: 8 hours ago
Round-trip
Saver
Los Angeles (LAX)to
Liberia, CR (LIR)Aug 28, 2026 - Sep 5, 2026
From
$696
Seen: 12 hours ago
Round-trip
Saver
Los Angeles (LAX)to
Liberia, CR (LIR)Sep 5, 2026 - Sep 12, 2026
From
$767
Seen: 8 hours ago
Round-trip
Saver
Los Angeles (LAX)to
Liberia, CR (LIR)Sep 4, 2026 - Sep 13, 2026
From
$767
Seen: 7 hours ago
Round-trip
Saver
Los Angeles (LAX)to
Liberia, CR (LIR)Aug 29, 2026 - Sep 6, 2026
From
$983
Seen: 9 hours ago
Round-trip
Saver
Los Angeles (LAX)to
San Jose, CR (SJO)Aug 28, 2026 - Sep 5, 2026
From
$692
Seen: 7 hours ago
Round-trip
Saver
Los Angeles (LAX)to
San Jose, CR (SJO)Aug 29, 2026 - Sep 5, 2026
From
$872
Seen: 17 hours ago
Round-trip
Saver
Seattle (SEA)to
San Jose, CR (SJO)Aug 29, 2026 - Sep 5, 2026
From
$1,211
Seen: 6 hours ago
Round-trip
Saver
*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.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Nov 28, 2026 | From $213 Seen: 6 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Sep 12, 2026 | From $219 Seen: 17 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Jun 25, 2027 | From $260 Seen: 8 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Apr 27, 2027 | From $260 Seen: 14 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Nov 4, 2026 | From $260 Seen: 12 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Oct 4, 2026 | From $278 Seen: 11 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Mar 2, 2027 | From $278 Seen: 14 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Nov 15, 2026 | From $278 Seen: 8 hours ago | |
| Los Angeles (LAX) | San Jose, CR (SJO) | One-way | Saver | Depart: Oct 18, 2026 | From $278 Seen: 2 hours ago | |
| Portland (PDX) | Liberia, CR (LIR) | One-way | Saver | Depart: Dec 7, 2026 | From $281 Seen: 8 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.