Is there a penalty for returning the ticket?

我若退票的话有罚款吗？

youdao

On Saturday, he tried to buy the ticket for his trip returning home on Feb 8 but failed after numerous attempts.

上周六，他试图购买一张2月8日回家的车票，但屡试屡败。

youdao

I've paid the ones that were legitimate - mostly being delayed and therefore being later in returning to my car than the duration of the ticket.

BBC: Parking - Your Thoughts

Graham also noted that Tsarnaev wasn't flagged upon returning from Russia because of the misspelling of his name on the ticket.

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Kayak says booking a domestic flight on Christmas day and returning on Friday December 28, could save up to 21% on ticket prices.

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