Thank you @Heather. Which car seat do you have?
We got a Cosco Scenera Next just for traveling because they are SUPER lightweight and easy to carry through the airport... And inexpensive. My 2 year old uses it on the plane, but if we ever checked it I wouldn't worry about it getting damaged because they're only like $60!
https://wayb.com/products/pico-car-seat A little pricey but if you travel a lot i promise it’s worth it !
We use the same car seat for home and travel, we just pop it onto a stroller cart for easy transport through the airport.