Yes! The travel industry uses a technology called "yield maximization" to identify people who are likely to travel in the near future based on their browsing habits. These companies then cookie you and record your IP address, browser signature and related devices. They share this information with travel websites who then raise your prices.
By blocking these various forms of tracking and identification, you will no longer look like someone who is prepared to travel and will generally see lower prices online.
Note: We suggest doing research and making your selections prior to logging into websites because once you login, that site is able to track your activity and adjust prices.