旅行袋的英文名称是 "suitcase"。

来源：

Suitcase这个单词源于英语中的"suit"（套装）和"case"（盒子）两个词的结合。在17世纪，人们把装有衣服的箱子叫做"suit-case"，后来就简化为"suitcase"。

英文例句及中文翻译：

I packed my clothes and toiletries in a suitcase for the trip.
我把衣服和梳妆用品装在一个旅行袋里出发。

Can you please help me carry this heavy suitcase to the car?
能不能帮我把这个重旅行袋搬到车上？

I always pack a small suitcase for weekend trips.
我出去周末总是带一个小旅行袋。

The suitcase was lost during the fpght.
飞机上旅行袋丢失了。

She locked the suitcase before leaving for the airport.
她在去机场之前锁上了旅行袋。