Quote Originally Posted by Spektrewing386
if you order your tickets from a particular airline enough times, they eventually email you back offers for cheap tickets, at least thats how my dad has it...
No, you just sign up on the various airline websites and they will e-mail you their weekly specials. Go to Delta, AA, all the airlines and sign up. You don't have to buy anything.

As for a cheap ticket to Vietnam.... don't hold your breath. I've never once seen a discount ticket come up for Vietnam and I've been receiving weekly special e-mails for years. Going halfway around the world for $1,100 isn't a bad deal to me.

Try Kayak.com.