About MakeItBy
Flight comparison for trips with an arrival deadline.
MakeItBy compares U.S. domestic nonstop flights using recent historical arrival performance. It is designed for trips where arriving by a specific time matters.
What MakeItBy Does
Enter two to eight nonstop flights you are already considering, their departure date, and your latest acceptable airport-arrival deadline. MakeItBy resolves those submitted flights and estimates each supported flight's chance of arriving by your deadline.
The result shows scheduled arrival time, deadline buffer, and estimated deadline reliability together. MakeItBy shows which flights are not clearly outperformed by another option. You make the final choice.
Traveling to a cruise? Read how to calculate the latest acceptable airport arrival time before comparing flights.
Data and Scope
Historical comparisons use U.S. airline performance records from the Bureau of Transportation Statistics. Submitted future-flight schedules are resolved through Cirium. The current product covers supported U.S. domestic nonstop flights on one origin-to-destination route.
What MakeItBy Does Not Predict
MakeItBy is not a live delay forecast. It does not use current weather, air-traffic restrictions, maintenance information, or other day-of-travel conditions. Historical performance is useful for comparing scheduled choices, but it does not guarantee a future outcome.
Historical Testing
The Performance page explains historical calibration, arrival-time tradeoffs, stability, and comparisons with simple scheduled-buffer rules.