Join Date: Apr 2009
Location: Bye Delta
Programs: AA EXP, UA Silver, HH Diamond, IHG Plat, Hyatt Plat, Marriott Titanium, Nat'l EE, Avis PC, Hertz PC
Posts: 16,637
Why not just wait until 2 days before departure? Chances are you're not going to end up paying more than $2,400.
Or book now and just get the non-refundable ticket. You will typically get it back in the form of an eCredit, non-transferable and only usable for 1 year from the date of purchase, less a $150 ASC. Easily re-usable if you are going to fly DL again in the next year.