Flying with 2 month old baby? Tips?✈️

When my son is roughly 6-8 weeks weeks we're going to Paris for a short weekend trip.

Our flight has minimal security. It's literally walk from car to airplane - then airplane to car once we land.

I'm taking his car seat and stroller base only. His car seat snaps onto the stroller base so we can push him around and pop him in the car.

Obviously his diaper bag will come with us + 2 manual pumps and microwave sterilising bags.

I'm thinking of buying baby sized noise cancelling headphones/sound proof earmuffs.

I'm mostly worried about the flight and then nappy changes in a car/in the air.

Anyone have tips for looking after a baby when traveling?