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

$586 USD

-41%$345 USD

Verified Sep 21, 2025 at 6:34 PM

September 2025

Today

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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$558 22$759 23$453 24$453 25$467 26$467 27$461 28$373 29$367 30$461 1$689 2$387 3$387 4$387 5$353

Fair Availability

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

Thursday, September 25th, 2025

10 round-trip options

Returning

Tue, Sep 30, 2025•5 Day Trip

$467 USD

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Returning

Wed, Oct 1, 2025•6 Day Trip

$467 USD

Google Flights

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Thu, Oct 2, 2025•7 Day Trip

$467 USD

Google Flights

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Fri, Oct 3, 2025•8 Day Trip

$467 USD

Google Flights

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Sat, Oct 4, 2025•9 Day Trip

$487 USD

Google Flights

Returning

Sun, Oct 5, 2025•10 Day Trip

$565 USD

Google Flights

Returning

Mon, Oct 6, 2025•11 Day Trip

$620 USD

Google Flights

Returning

Tue, Oct 7, 2025•12 Day Trip

$782 USD

Google Flights

Returning

Wed, Oct 8, 2025•13 Day Trip

$889 USD

Google Flights

Returning

Thu, Oct 9, 2025•14 Day Trip

$497 USD

Google Flights