How much travel is it, exactly?
I travel quite a bit, and my girlfriend seems to handle it fine - although there are obviously some times when it is harder than others. Believe it or not, I think one thing that has certainly helped is using FaceTime when I travel to communicate with her.
And do you not like it because you 1) miss him, 2) don't think you're getting enough attention, 3) afraid he's going to do something you wouldn't like while traveling? If points 1 and 2, I think those can be expected, and you should discuss it with him. Perhaps there are ways that you can spend more time with each other when he is in town. If point 3, there could be some larger - more significant - issues you need to discuss.
Just my opinion!