Yep, with a switch on the back of the psu to choose between our 110 volts and your 220 volts, the only difference in PC's is the power cord that's made to plug into your style of outlet.
Have a great trip.
BTW, to make the airport security easier, pack the PC hardware into cases for the cargo hold, and try to leave it in the origional packaging so they don't think you're some mad bomber or something.