Cheap Flights: Portland to/from Liberia, Costa Rica $322-$349 round-trip [between March-May] (Red-eye overnight outbound flight) – American Airlines

American Airlines has round-trip flights from Portland (PDX) to Costa Rica or Belize (LIR, BZE) for $322-$349 with a connection. Flights between March to May. Origin/Destination reversible. The outbound segment…