So here's the story. I am looking for 3 tickets from ewr-pty from 12/25-12/30. First time I check tickets were $500 each. I needed to wait to get the ok from my work so I couldn't book right away. At the time only 6 seats were shown as occupied on the flight. Checked again later in the week flight jumped to $560. Finally after I get my approval from work jumped to $700 (been that way for the last 2 weeks)! All the same time no more seats on both the coming and going flight have been booked as I have been looking at the seating chart. What has changed? Is it possible my stored cookies influenced the price due to my frequent searches????