Going to other cities

How is this possible? My friend's main wep is the fist I forget what city they start at but am I able to go to that city? I'm level 13

Thanks in advance

Either finish story quests till they give you your airship pass or go on a really long dangerous walk

Short of walking there...you'll get access to airships after completing your level 15 story quest.
Just two more levels to go. ^_^