Buenas. What is the best way to go from MA to Arenal. How long does it take?

When are you going? If after May 1st, you can fly Nature Air from Auepos to Arenal (via Pavas) for $90, flight about 80 minutes. (there hasn't been flights to Arenal for a while now, so this is great news, though I don't know if they will continue in the next high season)

Otherwise, you could take interbus which is about 5 hours & costs $25.

that would be Quepos!

I am sorry. I should have been more clear. We are driving from MA to Arenal.

Thanks.

ma-jaco-orotina-atenas-san ramon-la fortuna

do not fly there - the reason they stopped flying is because there was too many plane crashes around the volcano! They just started these flights again though, but I recommend not to do it!