In 2026, one-way flights remain significantly more expensive than half of a round-trip ticket, primarily due to airline price discrimination strategies. Airlines use sophisticated algorithms to distinguish between "leisure travelers" (who are price-sensitive and typically book round-trips far in advance) and "business travelers" (who often need last-minute flexibility and may only need a one-way flight). By pricing one-way tickets higher, airlines attempt to extract more revenue from those willing to pay a premium for a non-stop, specific-timed flight. This is especially prevalent on international routes; for example, a round-trip from New York to Paris might cost $800, while a single one-way could be $1,200. While low-cost carriers (LCCs) have forced some "fairer" pricing on domestic routes, legacy carriers like Delta and American still use this "logic" to protect their hubs and encourage round-trip loyalty. Additionally, booking two one-ways for international travel often incurs higher taxes and fees originating in foreign regions, further driving up the total cost compared to a single round-trip reservation.