I am an unusual person that use to book flights tickets 11 to 12 months ahead because that´s the easiest in my case (Stockholm Marseille through Amsterdam with Air France).
I am a user of Google Flights but they only track flights tickets until less than 11 months ago (ex: today I can track flights prices until the 10th of January 2019).
Let´s take the example that I want to track the Air France flight Stockholm to Marseille (through connexion in Paris= AF1063 + AF7670) on the 10th of February 2019 (Departure: 18h20 ; Arrival: 23h00). This ticket can already been bought on the Air France website.
What flight search engine can help me today to track the price changes for this flight?