Virtually all fly rods made today are "travel" (4-pc) rods. If you want something even shorter, Cabela's has a 6-pc rod:
Cabela's Online Store - Quality Hunting, Fishing, Camping and Outdoor Gear
Orvis makes a 7-pc, and Echo makes an 8-pc, but they are more expensive.
What's your budget?
On the other hand, you might want to try a tenkara set-up. Chris Stewart owns the Tenkara Bum website. He is a member here and a good guy.
https://www.tenkarabum.com/