For such a small country, it’s surprising how many airlines and airports Costa Rica has, wikipedia full list
Airports in Costa Rica:
Find more transportation options for Costa Rica.
There are over 50 small, domestic airports throughout Costa Rica in total.
Major International Airlines:
These are the most common used airlines internationally and domestically. However, there are over 30 more airlines that you can work with to fly either directly or indirectly to Costa Rica.
Here’s a great article about the specifics of flying into the International Airports by Costa Rica Learn.