The answer to this question depends on a variety of factors such as where you are flying to and from and when. Generally speaking, JetBlue tends to offer cheaper flights than Delta. They have lower fares because they offer fewer routes and amenities compared to Delta, so they can offer more competitive pricing.

Delta Air Lines generally commands a higher price point than JetBlue due to its global network and operational reliability. Delta operates a massive "hub-and-spoke" system that connects passengers to hundreds of international destinations through SkyTeam partners, whereas JetBlue’s network is more "point-to-point" and focused on the Americas and select European cities. Furthermore, Delta consistently ranks as the most on-time major U.S. carrier, a reliability that business travelers are willing to pay a premium for. Delta also invests heavily in its premium ecosystem, including its extensive network of Sky Club lounges and high-end Delta One suites. While JetBlue offers more legroom in standard economy (and free high-speed Wi-Fi for all), Delta targets a higher-tier corporate demographic that prioritizes scheduling frequency and elite status benefits, allowing them to maintain higher average fares across their routes.