Shuttle bus from Monteverde to San Jose airport

I'm planning on leaving Monteverde and then going directly to the airport for my flight back to the UK. Does anybody know if shuttle buses run daily. If so what times. There will be 2 of us. We will be around the 1st week of December.

Many thanks to anybody who replies in advance.

Grayline and Interbus drive this route and can drop you off at the airport.

What time does your flight leaves??

Always count with the unexpected........i.e. flat tire or broken engine of your bus, closed roads because of accidents.........