Buying multi-city flights is an excellent strategy if your travel itinerary involves visiting several distinct locations without returning to your starting point after each leg. In 2026, this approach is often superior to booking multiple "one-way" tickets because it keeps your journey on a single reservation (PNR), which provides better protection in the event of delays or cancellations. If one leg of a multi-city ticket is delayed, the airline is generally responsible for rebooking the subsequent segments. Economically, multi-city "open-jaw" tickets—where you fly into one city (like London) and out of another (like Paris)—can be surprisingly affordable, sometimes costing the same as a standard round-trip. This saves you both time and money by eliminating the need to backtrack to your original arrival city just to catch a flight home. It is particularly effective for "grand tours" of Europe, Asia, or South America. However, you should compare the price of a multi-city ticket against the cost of a round-trip plus local budget flights or high-speed rail, as low-cost carriers in regions like Europe can sometimes be cheaper than the multi-city add-ons offered by major legacy airlines.