You can also look back to see what miles tickets might be in the future for your dates. I do that and it helps me deside whether to buy or do miles for the one ways. This year I paid going and used miles for the return. Best for both pricing and miles is to wait two days after they come out. With the 1000 dollar voucher I had from this last trips fiasco we paid out a total of 500.00 including all taxes for 2 first class round trip tickets.