About Us

We build free tools and resources to help frequent flyers make smarter decisions about air travel. From fare class charts and mileage calculators to airport code lookups and distance tools, everything on cwsi.net is designed to give you quick, reliable answers without the clutter.

The idea started simple: a useful Delta fare class spreadsheet disappeared from the web, and we decided to build something better. Years of flying in previous careers taught us how hard it can be to find straightforward information about airline fare codes and earning rates. cwsi.net was created to fill that gap and has been growing ever since.

Free Tools, and a Few Paid Ones

Most of cwsi.net is free and will stay that way: the fare class charts, the mileage calculators, the lounge finder and the everyday flight tracker. Some capabilities are part of a paid membership, because it takes our time and money to build them and to host everything for you. Membership also helps keep the free tools running, and signing in removes the ads. You can see what is included on the membership page.

What Does CWSI Stand For?

CWSI originally stood for Creative Web Solutions, Inc., a small venture from the dot-com era that never quite got off the ground. The short domain name stuck around, though, and eventually found its true calling as a frequent flyer resource. Today, cwsi.net serves thousands of travelers looking for fare class details, mileage estimates, and aviation tools.

A Thank You to Our Community

Over the years, passionate flyers like you have helped make this site more accurate and more useful. We genuinely appreciate every correction, suggestion, and kind word. If you spot something that needs updating, please don't hesitate to contact us.