Living Social is offering a deal for $75 worth of airfare between New York and San Francisco on JetBlue for $25 (ie, $50 off a flight between JFK and San Francisco). Flights can be taken between February 21 and May 23rd, with April 5-16 blacked out.
I see roundtrip airfares at about $230, so you can go coast-to-coast for just $180 roundtrip. Not too shabby.
On a plus note, if you by the voucher and don’t use it, you’ll get $25 credited to your Living Social account.
Tickets must be purchased by April 6.