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

September 2025

Today

Mon

Tue

Wed

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Sun

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21$785 22$474 23$533 24$533 25$547 26$547 27$547 28$423 29$416 30$747 1$459 2$400 3$393 4$701 5$345

Limited Availability

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

Sunday, September 28th, 2025

7 round-trip options

Returning

Fri, Oct 3, 2025•5 Day Trip

$467 USD

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Sat, Oct 4, 2025•6 Day Trip

$517 USD

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Sun, Oct 5, 2025•7 Day Trip

$570 USD

Google Flights

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Tue, Oct 7, 2025•9 Day Trip

$743 USD

Google Flights

Returning

Thu, Oct 9, 2025•11 Day Trip

$423 USD

Google Flights

Returning

Sat, Oct 11, 2025•13 Day Trip

$561 USD

Google Flights

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Sun, Oct 12, 2025•14 Day Trip

$769 USD

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