1. Try and get your body on to the new time one or 2 days before your travel. I typically go to bed around midnight. As I am five hours behind U.K. time, when I travel to the UK, I try to go to bed at 7 p.m. for one or two nights before I set off, and start my day at three or four a.m. This way, my body has already started to adjust to the new time by the time I get to my destination. Similarly, while I am in the U.K.; before I begin my return to Canada, I try to stay up until 4 or 5 a.m., so that my body is already starting to adjust back to the right time by the time I get back home.
2. Try anti jet-lag pills- you can find these in many pharmacies and in airports, though they cost more at the airport. I have found them to be quite effective.
3. Take advantage of early check-in. nowadays most airlines will let you check in to your flight online 24hrs before you fly. This can get you a better seat and will speed up your process at the airport. Better seat= more comfortable travel= more rest= less jetlag.
4. Before you check-in early, in order to help you evaluate which seats are better than others, have a look at http://www.seatguru.com/.