Hey you finanical wizards, how much would it cost to buy Delta?

Just curious. There is a certain regional airline group that likes to say "we have enough money to buy Delta!"

I see we have an enterprise value as of this morning of $20.75B. But I guess if our stock price is $12 and there are 789M outstanding shares to wrestle 51% would cost you around $5B. Thats of course if the price doesn't run up do to merger talks.

I'm only seeing this said regional as having a $719M cash on hand. Is that enough?

I've never bought a major company before so I don't know how this works...