What is a security code?
About security codes
A security code is a 3 or 4 digit number printed separately from your credit card number, which you must enter as a security measure to prevent unauthorized use during online transactions.
Security Code Authentication
When paying by credit card, authentication using a security code is required. By entering the security code, the security of your credit card payment is improved and fraudulent use is prevented.
Security code display location
For VISA/MASTER/DINERS/JCB cards
- The security code is the last three digits of the number printed on the "signature section" of your credit card.


For AMEX cards
- The security code is the four digits in the top right corner of the front of your credit card.


- Please keep your confirmation reservation number safe as it will be used as the authentication code when changing/refunding your reservation or checking in for your flight.
- Some credit card companies may not support authentication using security codes.
- The security code is not your credit card PIN.