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You can apply for any travel credit card with miles or points rewards that is issued by a major bank. These cards allow you to earn good rewards on every purchase you make, not just airline tickets. The earned miles can be redeemed towards free flights with any airline of your choice. The miles rewards credit cards often come with a sign-up bonus that may be enough for a round-trip economy flight ticket. To get this bonus, you usually need to spend a specific amount of money within a specific period of time. The cards with miles rewards do not usually have foreign transaction fees and may come without an annual fee.