Anyway, before he left Hyung Jun tweeted and attached photo to his tweet from the airport. Here is translation of his tweet courtesy of @xiaochu1004 on Twitter.
@HyungJun87 I'll have a safe flight to Hawaii. People who miss me. Byebye. Be careful of catching flu! I am top star Kangmin ~~~~~~^____^ http://yfrog.com/h774bzdfj
Here are photos tweeted by JunusOfficial.
And here are video and photos from Prettyboy.