楼主 (北美微论坛)
200刀出一张delta美国境内往返机票买一赠一卷，2020年3月31号过期，Companion Certificate，使用这个可以main cabin的机票买一送一（限美国境内的48个州），wx2495371466。Companion certificate is valid for one round-trip Main Cabin companion ticket with the payment of applicable taxes and fees detailed below and the purchase of certain adult round-trip fares on published routings within the 48 contiguous United States.