I commute BAL-NYP. So, choosing the Acela I usually take in the morning, 2152, very far out, on 9/16, it's $247. Looking at it closer to, on 5/13, it's $67. These are both Mondays. I used to be able to buy that September fare today at the low price and then closer to the travel date it would go up. Now it goes like this: 5-11 months out super high, 2-5 months decent with some fluctuation, this week-2 months out, moderate to moderately high.