Wrinkled suits are a common problem of business travellers. There are some tactics that can help though!
Department stores now sell machine washable and no-iron business suits. If that doesn't take your fancy, rolling rather than folding your business suit can minimize wrinkles. You can do this by gently rolling your suit around other clothes when you pack it. Because you are not creasing the suit in packing, it comes out of your suitcase without the harsh lines. Also, be sure to remove your suit from your luggage as soon as you arrive. Hang it so that wrinkles can fall out. Another helpful tactic is to gently steam your suit at your destination by simply hanging it on the outside of the shower when you bathe. Be sure that it is out of shot of the water though. A wet wrinkled suit is surely ten times worse than a wrinkled suit!