Many credit card issuers charge foreign transaction fees for purchases made in a foreign currency or that involve a foreign bank. (creditcards.com)
For example, if you buy a $ 1,000 flight in euros, you will pay a foreign transaction fee of $ 30. (supermoney.com)
Over the last year, approximately half of rewards card holders remain unaware that they may be charged foreign transaction fees for purchases made while traveling abroad. (phx.corporate-ir.net)