Getting to Roseaire by Public Transportation
Please note: excluded from this post are directions for getting to Roseaire by car. If you travel by car, either you are local or you will consult your GPS, Google Maps or whatever.

1. Flying into Palm Beach International Airport (PBIA)
Just take a taxi. It's approximately a 20 minute ride!
2. Flying into Fort Lauderdale/Hollywood International Airport (FLL)
Depending on traffic, a taxi ride may vary from a 40 minute ride to one hour, although the expense can be shared for multiple passengers.
The alternative is to take the "Tri-Rail" and arrange pick up at Delray Beach station. It's a 40 min train ride.
The alternative is to take the "Tri-Rail" and arrange pick up at Delray Beach station. It's a 40 min train ride.
The Tri-Rail station is not in the airport, but there is a free shuttle that gets you there.
3 Flying to Miami International Airport (MIA)
From any terminal you arrive in, take the SkyTrain (inter-connection among terminals) and proceed to the MIA Station. From there a shuttle train will take you to the Central Station. You can't miss it since there is just one stop for everything: Rental-Car, Metrorail and Tri-Rail. Take the Tri-Rail to Delray Beach Station.

Practical Tips:
Be aware that this is not a busy line. Trains go every hour, or every half an hour during rush hours.