Mainly with a credit or debit card they will accept sometimes it will accept cash I hope this help
Check with the airline that your flying
The best answer will come directly from the airline you are traveling. In general, most airlines will accept cash at their full service ticket counters, including for the payment of baggage fees. The amount of those fees do vary, and some, like southwest, do not charge for checked baggage (fist two bags under their limiting weight).
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