MCC 3031
Olympic Airways
MCC 3031 is reserved for Olympic Airways. Card networks reserve codes 3000–3299 for individual airlines, so issuers can see exactly which company a payment went to.
Airlines without a reserved code use MCC 4511. This category carries elevated fraud or chargeback exposure, for example because of future delivery, high ticket sizes or recurring billing. Expect closer underwriting and possibly a rolling reserve.
Related categories include MCC 4511 for airlines. Nearby codes include MCC 3030 for Aerolineas Argentinas and MCC 3032 for El Al.