Of course, there are some conditions. First, the deals only apply to specific flights between June 7 and 28. So, you'll have to be flexible — and willing to pick up and go on a whim. Second, tickets are non-refundable and they're all one-way, but at these prices, what do you really have to lose?
Just remember that it's called a flash sale for a reason: These fares won't stick around for long. The sale is valid until 11:59 p.m. tonight (June 2, 2016) — unless the seats sell out before then. And it seems safe to expect that they will. Translation: Stop whatever you're doing and go get these, NOW. (JetBlue)