The article shows how using Stated Preference data can help improve the analysis of air travel choices by providing exact information on the options passengers actually faced. This data can help account for factors like air fares, flight availability, and airline allegiance more accurately. Unlike Revealed Preference data, Stated Preference data does not need to consider factors like flight frequency, visibility, and capacity, making the analysis more precise. By presenting passengers with specific flight options, the researchers were able to better understand how schedule delays impact decision-making. Overall, using Stated Preference data can offer valuable insights into air travel choice behavior.