This has been going on for years, including inside the EU, for those wondering. You can test to see if it happens for you by going to a flight website, getting a price for a flight, then go back a few times to search for the same flight.
The question of what you do to fight it is by clearing the cookie for the website, using a different browser and/or changing your location/block tracking (use a VPN or tor). Usually clearing the cookie is enough.
This has been going on for years, including inside the EU, for those wondering. You can test to see if it happens for you by going to a flight website, getting a price for a flight, then go back a few times to search for the same flight.
The question of what you do to fight it is by clearing the cookie for the website, using a different browser and/or changing your location/block tracking (use a VPN or tor). Usually clearing the cookie is enough.