Free money - use it or let it expire?

I have a $25 voucher for JetBlue. It expires today. In fact, it might expire in 22 minutes. I am on the West Coast so I am just not sure. I also have around $250 in an unused credit that is good till the middle of next month. 

I wanted to use the voucher and the credit to book a flight. But here is the problem - I don't know where exactly yet. So, do I make a rushed decision just to not lose the $25 today? Or wait to make the decision and miss out on the $25 voucher?

I think I am going to let the voucher expire. I just am not ready to make the decision now and if I have to change the flight it will cost $25! Sucks to lose free money though.