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

UAUnited Airlines

Round Trip•Economy

PDX

Portland International Airport

Portland, United States

LIR

Daniel Oduber Quirós International Airport

Liberia, Costa Rica

$587 USD

-41%$345 USD

Verified Sep 19, 2025 at 6:34 PM

October 2025

Today

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29$363 30$397 1$675 2$402 3$357 4$357 5$353 6$353 7$1,450 8$1,009 9$667 10$622 11$401 12$518 13$345 14$457 15$453 16$451 17$349 18$349 19$349 20$345 21$438 22$505 23$349 24$349 25$349 26$349 27$345 28$345 29$345 30$349 31$349 1 2

Fair Availability

36% of dates checked are available within 10% of the lowest price

Tuesday, October 14th, 2025

10 round-trip options

Returning

Sun, Oct 19, 2025•5 Day Trip

$764 USD

Google Flights

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Mon, Oct 20, 2025•6 Day Trip

$600 USD

Google Flights

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Tue, Oct 21, 2025•7 Day Trip

$697 USD

Google Flights

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Wed, Oct 22, 2025•8 Day Trip

$565 USD

Google Flights

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Thu, Oct 23, 2025•9 Day Trip

$462 USD

Google Flights

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Fri, Oct 24, 2025•10 Day Trip

$457 USD

Google Flights

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Sat, Oct 25, 2025•11 Day Trip

$495 USD

Google Flights

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Sun, Oct 26, 2025•12 Day Trip

$497 USD

Google Flights

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Mon, Oct 27, 2025•13 Day Trip

$461 USD

Google Flights

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Tue, Oct 28, 2025•14 Day Trip

$460 USD

Google Flights