PDX to LIR from $446 in economy – flightdeals.net

Home Premium Fare Deals About

United Airlines

UAUnited Airlines

Round Trip•Economy

Portland International Airport

Portland, United States

Daniel Oduber Quirós International Airport

Liberia, Costa Rica

$760 USD

-41%$446 USD

Verified 14 days ago

September 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$460 1$604 2$676 3$460 4$604 5$465 6$458 7$495 8$530 9$511 10$465 11$460 12$460 13$460 14$451 15$604 16$771 17$460 18$460 19$460 20$446 21$446 22$690 23$565 24$460 25$465 26$460 27$446 28$451 29$451 30$690 1$465 2$460 3$479 4$446

Fair Availability

24% of dates checked are available within 10% of the lowest price

Sunday, September 6th, 2026

5 round-trip options

Returning

Fri, Sep 11, 2026•5 Day Trip

$458 USD

Returning

Mon, Sep 14, 2026•8 Day Trip

$536 USD

Returning

Wed, Sep 16, 2026•10 Day Trip

$476 USD

Returning

Thu, Sep 17, 2026•11 Day Trip

$458 USD

Returning

Sat, Sep 19, 2026•13 Day Trip

$536 USD