Originally Posted by FlightCrewTools

I always wait until I have all my vacations awarded, but you can do it any time prior to April 1st (minding the carveouts).

Specifically, go into iCrew->Pay Hours->Bank->Add/Update Bank Request->Enter Option 3 & how many days you want. The result will be reflected on your Time Card.

Then sometime before 4/1, call the Vacation Desk and let them know where you would like to place your purchased days. If you don't do this before your final vacation week is awarded, it will automatically be added to that vacation. Still no big deal, as you can still move them around up until the vacation year begins (and after, but with more restrictions.)

For the Vacation Desk phone number, and some more good information, go to Deltanet->Search: "Vacation Bidding Tips". This will return a pdf with all the info you need + the phone number to call.

Relevant Language from the Scheduling Reference Handbook: