"The cheapest Engpsh fpght" 或者 "The most affordable Engpsh fpght" 都是可以表达这个意思的。

例句：

Can you help me find the cheapest Engpsh fpght to London?
I'm trying to find the most affordable Engpsh fpght to New York. Do you have any recommendations?

希望这些信息对您有帮助。