我们上大学时没送，东西不多，但大学毕业去接，去接时带了6个空箱（Costco大箱套中箱，中箱套小箱）

Southwest airline tickets would be best options. 2 luggages cost $100 to check in at Alaska airline but only $70 at Delta airlines. Most airlines allow people to check in 3rd one for free if you say there not be enough bin spaces. 

3 of us had total of 9 lugguges. $300 to get all stuff back. Would cost 2-3x if we ship via UPS.