Alaska Airlines Flights from Costa Rica to United States

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Deals on one-way flights from Costa Rica to United States.*

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Liberia, CR (LIR)to

Seattle (SEA)
Depart: Jul 27, 2025
From
$431
Seen: 1 hour ago
One-way
Saver

San Jose, CR (SJO)to

Seattle (SEA)
Depart: Jul 23, 2025
From
$275
Seen: 7 hours ago
One-way
Saver

San Jose, CR (SJO)to

Seattle (SEA)
Depart: Jul 20, 2025
From
$760
Seen: 13 hours ago
One-way
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 low-fare flights Costa Rica to United States.*

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One-way low-fare flights Costa Rica to United States.*
From
To
Fare Type
Dates
Price
Liberia, CR (LIR)San Francisco (SFO)One-way
|
Saver
Depart: Sep 20, 2025

From

$252

Seen: 3 hours ago

Liberia, CR (LIR)Seattle (SEA)One-way
|
Saver
Depart: Dec 28, 2025

From

$775

Seen: 1 hour ago

Liberia, CR (LIR)Seattle (SEA)One-way
|
Saver
Depart: Apr 11, 2026

From

$777

Seen: 6 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.

Popular Costa Rica to United States routes