Whether it's cheaper to fly into San José or Liberia in Costa Rica depends on a few factors. These include your departure city, the time of year, airline promotions, and how far in advance you book your flight.  In general, flights to San José (Juan Santamaría International Airport - SJO) will be less expensive and have more flight options. But the inland city is farther from beach destinations like Tamarindo, so you’ll have additional travel time and expenses. On the other hand, flights to Liberia (Daniel Oduber Quirós International Airport - LIR) tend to be more expensive. However, you will be closer to the coast and the beaches, so will spend less getting there from the Liberia Airport.