coach class

剑桥词典

(using) the cheapest type of seats on a plane or train
乘坐（飞机）经济舱；乘坐（火车）普通车厢
Traveling in coach class is not a great way to spend your time . 乘坐经济舱不是什么令人愉悦的经历。

比较

first class 返回 coach class