Ronaldo.
I’m assuming that they're both travelling from the airports nearest the stadiums on fast private jets to the capital of their own country. They will be travelling at about 850kmh. Buenos Aires is 14000 km from Kazan so if Messi and co boarded their plane at 7pm BST he should be in bed by 1pm BST tomorrow. The Argie flight would have needed to stop to refuel somewhere along the way.
Sochi is 4000 km from Lisbon so assuming that the Portuguese leave Sochi at 11pm BST then Ronaldo will be in bed at 5am.