近年来各航空公司推出特价机票吸引消费者,极大地方便了人们出行,也为航空公司带来了利益和商机,但同时也引发了很多问题,大多数是航空公司和乘客关于特价机票退改签的问题。笔者从退票费过高的角度,探讨航空公司收取的高昂退票费构成不当得利的问题。 In recent years, airlines have introduced special fares to attract consumers, which has greatly facilitated people’s travel. It has also brought interests and business opportunities to airlines. However, it has also caused many problems at the same time. Most airlines and passengers are refusing to make special fares Sign the question. From the perspective of excessive refund fees, the author discusses the issue of unjust enrichment charged by expensive refund fees charged by airlines.