DCA to LIR from $144 in economy – flightdeals.net

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American Airlines

AAAmerican Airlines

One Way•Economy

Ronald Reagan Washington National Airport

Washington, United States

Daniel Oduber Quirós International Airport

Liberia, Costa Rica

$188 USD

-23%$144 USD

Verified 3 days ago

September 2026

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31$144 1$144 2$181 3$201 4$201 5$169 6$144 7$144 8$144 9$149 10$176 11$170 12$144 13$144 14$144 15$144 16$181 17$176 18$176 19$150 20$150 21$144 22$150 23$181 24$176 25$176 26$144 27$144 28$144 29$163 30$181 1$176 2$184 3$150 4$150

Good Availability

51% of dates checked are available within 10% of the lowest price

Thursday, September 17th, 2026

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