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San José has strong nonstop connectivity from MIA, IAH, ATL, DFW, and several other US gateways on Spirit, Frontier, American, Delta, and United, with flight times around 3 to 5.5 hours.
Dry season (December–April) is peak, with the sunniest, most popular weather and highest fares. Green/rainy season (May–November) is cheaper and lusher, with typically brief afternoon showers rather than all-day rain.
Spirit and Frontier often post the lowest headline fares; American, Delta, and United can be competitive if booked within the optimal window rather than last minute.
2 to 3 weeks out on budget carriers, or 3 to 5 weeks out on full-service carriers.
Green/rainy season (May–November) is generally cheaper, with typically brief afternoon showers. Dry season (December–April) is the most popular and expensive.
Spirit and Frontier often have the lowest headline fares; full-service carriers can be competitive if booked within the optimal window.
US citizens can visit Costa Rica visa-free for short tourist stays, no advance visa needed.