A relative of mine is going to Panama on Spirit Airlines for $66 each way out of Miami. They have $58 fares to Costa Rica as well. I believe they charge for luggage

This is coming up quick, but you could still apply for the Citibank Advantage cards. You get 75K for each and it is only 30 to 35K per ticket, with two free bags to fly to Costa Rica on American. I am taking family of 5 to Costa Rica in March for 30K each earned from these Citibank cards.

I mistakenly first said Jet Blue.