DCA to LIR from $340 in economy – flightdeals.net

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United Airlines

UAUnited Airlines

Round Trip•Economy

Ronald Reagan Washington National Airport

Washington, United States

Daniel Oduber Quirós International Airport

Liberia, Costa Rica

$616 USD

-45%$340 USD

Verified 2 days ago

September 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$340 1$340 2$466 3$507 4$493 5$440 6$340 7$340 8$340 9$410 10$351 11$351 12$351 13$356 14$340 15$340 16$491 17$481 18$484 19$351 20$466 21$340 22$340 23$466 24$438 25$351 26$351 27$356 28$351 29$351 30$412 1$581 2$351 3$440 4$351

Fair Availability

22% of dates checked are available within 10% of the lowest price

Thursday, September 3rd, 2026

5 round-trip options

Returning

Wed, Sep 9, 2026•6 Day Trip

$632 USD

Returning

Sat, Sep 12, 2026•9 Day Trip

$659 USD

Returning

Mon, Sep 14, 2026•11 Day Trip

$634 USD

Returning

Tue, Sep 15, 2026•12 Day Trip

$507 USD

Returning

Thu, Sep 17, 2026•14 Day Trip

$516 USD