Assignment guidance
When MCC 4511 should be used
- For airlines and air carriers that do not have a dedicated carrier-specific MCC.
- For the carrier's own passenger air-transport transactions.
Transportation
MCC 4511
Airlines and air carriers
Air carriers that are not assigned a more specific airline merchant category code.
Boundary guidance
When MCC 4511 should not be used
- For airports, travel agencies, tour operators, or unrelated airport merchants.
- For an airline that must use its own assigned carrier MCC.
Scheme comparison
Names and evidence status
Absence from public material is not treated as proof that a scheme does not use the MCC.
| Scheme | Evidence | Scheme wording | Comparison |
|---|---|---|---|
| Visa | Official | Airlines and Air Carriers (Not Elsewhere Classified)Global Visa merchant-data manual, April 2026, PDF page 55. | Different wording |
| Mastercard | Official | Air Carriers, Airlines: Not Elsewhere ClassifiedMastercard Merchant Edition reference, 16 April 2024, PDF page 61. | Different wording |
| American Express | Publicly not found | No current public definition locatedThe complete American Express Codes Reference Guide is not public. This is not evidence that the MCC is unsupported. | Not available |
| Discover / Diners Club | Publicly not found | No current public definition locatedNo complete current public Discover / Diners Club MCC catalogue was located. This is not evidence that the MCC is unsupported. | Not available |
| UnionPay | Not reviewed | No global definition reviewedThe official material reviewed so far is limited to EEA fee appendices and is not a global definition catalogue. | Not available |
Provenance
Sources reviewed
- Visa Merchant Data Standards ManualApril 2026 · global · official · PDF page 55
- Mastercard Quick Reference Booklet - Merchant Edition16 April 2024 · official · PDF page 61
SchemeLens descriptions and use boundaries are editorial summaries of the cited material. Final MCC assignment depends on the merchant's primary business, current scheme rules, region, programme, and acquirer requirements.