请问有经验的长老知道航班被无理由改了时间怎

原订的Frontier Airlines

From Indianapolis Intl Airport (IND)

Indianapolis, IN

Departs: 4 PM

To Denver Intl Airport (DEN)

Denver, CO

Arrives: 5 PM

From Denver Intl Airport (DEN)

Denver, CO

Departs: 6

To Los Angeles Intl Airport (LAX)

Los Angeles, CA

Arrives: 7

改成了前半段一样，后半段为

From Denver Intl Airport (DEN)

Denver,CO

To Los Angeles Intl Airport (LAX) Departs: 9

Los Angeles, CA

Arrives: 10：54PM


























下面是The priceline.com Customer Service Team的邮件：


Airlines adjust flight schedules for various reasons; this is a common practice. We have sent this notice as a courtesy and since your airline can continue to change flight schedules, please call the airline to confirm your flight information prior to each departure.

查过前一个航班的票还在卖，只是贵了100多刀，遇到这种情况怎么才能要求把航班调回来？谢谢