Your ticket is non-refundable.

你的机票是不予退还。

youdao

The correct application processing fee paid in cash. Fee is non-refundable.

以现金支付正确的申请受理费。受理费不予退还。

youdao

But when it started, all its fares were non-refundable, and it was mostly a leisure airline.

捷蓝航空开始运营时，其所有机票均不可退换，生意很是冷清。

youdao

ChangeYourFlight provides an alternative for these non-refundable tickets, with airlines providing a partial refund without any change fee.

BBC: New sites let you sell unused trips

Theaters and sports teams sell non-refundable tickets, but buyers can give them to friends or sell them.

WSJ: Airline Cancellation Fees and Penalties Are a Big Business

All packages are charged in full at time of booking and are non-refundable.

FORBES: Tax Day Specials, Promos And Freebies