How much suit cases can you bring I was wondering because I want to bring alot of stuff

SW Airlines allows for two bags. Check the carrier.

A checked bag only allowed is 40 lbs... Additional bags are $50 each...

You need to check with your airline. They have limits on how much can be checked in and how much can be hand luggage. Hand luggage dimensions are also specified by the airlines

Depends on who you're flying with. I use Southwest because you automatically can bring 2 bags for free

You can figure out the coats by looking at your airlines website or calling their customer service.

As many as you want but you'll have to check any bag bigger than a carry on, and you can only bring one carry on (cost for carry on depends on airline) The cost of each checked bag varies by airline, and usually has to be under 50lbs.