聞くだけ(頼む)聞いてみれば

良いのでは。

一応、規則として、
However, times shown in timetables, schedules or elsewhere are subject to change at any time and from time to time and we shall not be liable in any way whatsoever for any loss incurred by passengers as a result of such change.

In the event of such flight cancellation,
とフライトキャンセルのさいはいろいろ努力はすると書いてありますが。