Portland (PDX) to Liberia (LIR) cheap flight deal from $345 USD in economy class

ASAlaska Airlines, Inc.

Round Trip•Economy

PDX

Portland International Airport

Portland, United States

LIR

Daniel Oduber Quirós International Airport

Liberia, Costa Rica

$635 USD

-46%$345 USD

Verified Sep 21, 2025 at 6:34 PM

October 2025

Today

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Wed

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29$416 30$747 1$459 2$400 3$393 4$701 5$345 6$400 7$581 8$515 9$453 10$410 11$402 12$452 13$452 14$352 15$345 16$508 17$508 18$508 19$345 20$452 21$503 22$508 23$452 24$452 25$356 26$345 27$345 28$345 29$452 30$349 31$349 1 2

Limited Availability

19% of dates checked are available within 10% of the lowest price

Sunday, October 12th, 2025

6 round-trip options

Returning

Sat, Oct 18, 2025•6 Day Trip

$788 USD

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Returning

Sun, Oct 19, 2025•7 Day Trip

$597 USD

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Tue, Oct 21, 2025•9 Day Trip

$507 USD

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Returning

Thu, Oct 23, 2025•11 Day Trip

$452 USD

Google Flights

Returning

Sat, Oct 25, 2025•13 Day Trip

$830 USD

Google Flights

Returning

Sun, Oct 26, 2025•14 Day Trip

$463 USD

Google Flights