Travel in Spring Season

Hi

We have postphoned our trip from this year end to

next year March or April 2008.

Can anyone advise which month is better March or April, is Spring high season in Korea?

Regarding the air ticket to Jeju Island, do anybody

knw what is the price difference between Hyosung Air and Korea/Asiana airline. Understand that Hyosung website is to be done in Korea Language, wherelse Korea/Asiana in english language. Or can we book when we arrive Korea ?

Thanks alot!

cheers.......