Yes. To make sure your credit card data is safe (when you book a flight via TUIfly), we use the latest Secure Socket Layer technology (SSL with 128 bit encryption). SSL is currently regarded as one of the most secure methods of transmitting credit card information and other sensitive data through the Internet.
If your browser supports SSL, please select that security mode when making your booking and your credit card data and personal information will be protected with the help of that technology. If your browser does not support SSL, you can use the unsecured transmission mode. However, we recommend that you update your browser to the latest version to ensure secure handling of future transactions. Common browsers such as Internet Explorer, version 5.5 and higher, and Netscape Navigator, version 7.0.1 offer all the features you need.