Upvote:1
No, when a person is refused entry to a country, they do not get a refund on their ticket. Quite the opposite, in fact: they have to pay for their ticket home. This may involve paying a fee to change the existing ticket, or it may involve buying a completely new ticket.
It is always the passenger's responsibility to make sure they meet the entry conditions of the country they are travelling to. Airlines will check that the passenger has the required documentation, because they also get fined when people are refused entry. However, the airline has been contracted to take the passenger to the airport, which they have done, so there are no grounds for a refund.
Upvote:1
No, you will definitely not get any refund on any airfare.
Further, unless she obtains a certain type of Visa, residence, work, transit, etc., the airline may even require a round trip ticket purchase.
If she is denied admission, that is how she will pay for the return.
Upvote:4
No, as mentioned in comments, you won't get any refund for flights if denied admission. If you wish to insure against such an event, you would have to find an insurance company that would provide such a policy. I've not heard of one though.
To minimise the chances of your girlfriend being denied admission, I would suggest that you ensure that her visa application contains all the answers that could possibly come up in questions at the border interview. i.e. for purpose of visit, if she puts "general tourism" and only at the border interview she admits she's visiting her boyfriend, then that creates a new doubt that she may leave the country. If she instead stated that in her visa application and the visa is granted, it seems somewhat more unreasonable for the CBP agent to deny entry based on something stated and approved in the visa application. Similarly for duration of visit and other questions.
By volunteering information in the visa application, she may be more likely to be refused a visa, but if the visa is granted, she may be less likely to be refused entry at the border.