Alaska Airlines Flights from Costa Rica to United States

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

*Prices have been available for one-way trips within the last 48 hours and may not be currently available. Fares listed may be Saver fares which is our most restrictive fare option and subject to additional restrictions. 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.*

One-way low-fare flights Costa Rica to United States.*
From
To
Fare Type
Dates
Price
Liberia, CR (LIR)Seattle (SEA)One-way
|
Main
Depart: Jun 18, 2025

From

$335

Seen: 8 hours ago

Liberia, CR (LIR)San Francisco (SFO)One-way
|
Main
Depart: Dec 28, 2025

From

$545

Seen: 12 hours ago

Liberia, CR (LIR)Seattle (SEA)One-way
|
Main
Depart: Jan 4, 2026

From

$1,373

Seen: 15 hours ago

*Prices have been available for one-way trips within the last 48 hours and may not be currently available. Fares listed may be Saver fares which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.