April 13, 2026 · Source: The Flight Deal

Cheap Flights to Liberia, Costa Rica from $346 (2026)

Source: American: Philadelphia – Liberia, Costa Rica. $346 (Basic Economy) / $422 (Regular Economy). Roundtrip, including all Taxes

American Airlines is offering roundtrip flights from Philadelphia to Liberia, Costa Rica starting at $346 in Basic Economy. Flights to the Guanacaste region are available for as low as $422, taxes included, with limited availability.

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