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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Tue

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

Thursday, October 2nd, 2025

6 round-trip options

Returning

Tue, Oct 7, 2025•5 Day Trip

$1,718 USD

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Returning

Thu, Oct 9, 2025•7 Day Trip

$1,396 USD

Google Flights

Returning

Sat, Oct 11, 2025•9 Day Trip

$1,449 USD

Google Flights

Returning

Sun, Oct 12, 2025•10 Day Trip

$1,658 USD

Google Flights

Returning

Tue, Oct 14, 2025•12 Day Trip

$1,781 USD

Google Flights

Returning

Thu, Oct 16, 2025•14 Day Trip

$400 USD

Google Flights