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

September 2025

Today

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19$453 20$453 21$453 22$701 23$587 24$439 25$453 26$379 27$379 28$359 29$363 30$397 1$675 2$402 3$357 4$357 5$353

Fair Availability

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

Sunday, September 21st, 2025

10 round-trip options

Returning

Fri, Sep 26, 2025•5 Day Trip

$453 USD

Google Flights

Returning

Sat, Sep 27, 2025•6 Day Trip

$473 USD

Google Flights

Returning

Sun, Sep 28, 2025•7 Day Trip

$708 USD

Google Flights

Returning

Mon, Sep 29, 2025•8 Day Trip

$1,423 USD

Google Flights

Returning

Tue, Sep 30, 2025•9 Day Trip

$453 USD

Google Flights

Returning

Wed, Oct 1, 2025•10 Day Trip

$558 USD

Google Flights

Returning

Thu, Oct 2, 2025•11 Day Trip

$558 USD

Google Flights

Returning

Fri, Oct 3, 2025•12 Day Trip

$544 USD

Google Flights

Returning

Sat, Oct 4, 2025•13 Day Trip

$548 USD

Google Flights

Returning

Sun, Oct 5, 2025•14 Day Trip

$608 USD

Google Flights