You have to reconfirm your flight 24 hours before travelling.

必须在乘飞机之前24小时再次确认你的航班。

《牛津词典》

Do I have to reconfirm?

我需要再确认吗？

youdao

I'm calling to reconfirm my reservation.

我打电话来是要再确认我的预订。

youdao

"There is no stronger democratic ally in this region than Israel and we're here to reconfirm and affirm that."

VOA: standard.2009.08.06

Likewise, your manager might give you a test challenge to reconfirm her decision to demote or fire you.

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And we also want to reconfirm the full will of the Polish party to be fully open in the area of nuclear power.

WHITEHOUSE: President Obama and Prime Minister Tusk Press Conference

Please in confirmation that you are still alive, you are advised to reconfirm the below listed information to enable us facilitate an immediate payment to you.

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