DelayGuard

DelayGuard is a flight delay predictor for US domestic flights. You enter a flight by route or flight number, and it returns a delay-risk band (Low to Very High) and, on paid lookups, an exact delay and cancellation probability with a breakdown of the main contributing factors.

Predictions come from a hybrid model: a machine learning model trained on millions of Bureau of Transportation Statistics on-time records, combined with a rule engine that uses live NOAA aviation weather and FAA ground delay programs. It covers eight major US airlines across 80 airports, and adds free tools such as a layover checker, daily airport delay outlooks, airport delay guides and route statistics.

The free plan includes three predictions per day showing the risk band. Credit packs and a Premium subscription unlock exact percentages, same-day lower-risk flight alternatives, trip PDFs, CSV history export and reminders for saved flights.