Privacy & disclaimer
This calculator runs entirely in your browser. It doesn’t ask who you are, and the details you type never leave your device.
No personal data. There’s no account, no login, and no server. Nothing you type is transmitted anywhere — your status, route, dates, and seat counts are computed locally, right in your browser.
The flight lookup stays local too. The optional “look up by flight number” feature matches your flight against a small route table the site has already downloaded, so your flight number is never sent anywhere either.
Saved on your device. So the form remembers your last entries between visits, your inputs are now saved locally in your browser (using localStorage). This data stays on your device, is never sent to us or anyone else, and you can clear it any time with the calculator’s “Reset” button or by clearing your browser’s site data.
No cookies for tracking. The page sets no advertising or cross-site tracking cookies.
Fonts. The page loads a typeface from Google Fonts, which means your browser makes a request to Google’s servers to fetch the font files. That request necessarily includes your IP address, as any web request does. No other information is sent.
This site runs no analytics and sets no tracking cookies.
Estimates, not guarantees. The result is a modeled probability based on reasoned assumptions and Delta’s published policies — not a prediction of your specific outcome and not a promise of any upgrade. It is for informational and entertainment purposes only.
It can’t see operations. The model assumes normal conditions. Weather, IT outages, cancellations, aircraft swaps, and rebooking cascades can override every assumption here, and the tool has no visibility into them.
Policies change. Airline upgrade rules, windows, and fare rules change over time and can vary by situation. Always confirm current details with Delta directly. Nothing here is professional, financial, or travel advice.
No liability. The tool is provided “as is,” without warranties of any kind. The author is not liable for any decision made or loss incurred in reliance on it. By using it, you accept that you do so at your own discretion.
All product names, logos, and brands are property of their respective owners. Use of these names is for identification and descriptive purposes only and does not imply endorsement.
Questions or corrections? Reach the author on Instagram.
Last updated: June 2026.