JetBlue Airways is only five days away from entering the Boston market by establishing a presence at Logan International Airport. The VP of strategy for JetBlue considers the range of potential competitive responses that he might expect from such established airlines as American Airlines, so he can anticipate and prepare. As the largest major carrier operating out of Logan, American had more at risk than the other major carriers and had not yet decided how best to compete with the LCCs. How would American respond? This case is a counterpart to S-0116, which takes the perspective of the incumbent, American Airlines. Instructors who wish to teach S-0229 will also need accompanying materials S-0250 and S-0118.