I DON'T THINK THAT TRAVELCITY GOES FROM GLASGOW OR EDINBURGH BUT YOU COULD GIVE THEM A GO
I AM GOING NEXT JANUARY AND GOT A FLYDRIVE DEAL WHICH WORKED OUT £219.
FLORIDA'R' US OR SKYDECK ARE CHEAP-AGAIN NOT SURE ABOUT DEPARTING AIRPORTS
http//www.travelcity direct.co.uk
http//www. florida.org.uk
http//www.skydeck.co.uk
hope this helps
LIN