Key Takeaways. If you purchase multiple tickets in a single transaction, the price will be the same for each of the tickets. If not enough of the lowest-cost seats are available, you'll pay a higher cost for all of the seats. Buy the tickets one at a time to make sure you get all of the lowest-cost seats available.

In 2026, the decision to buy flights together (on a single ticket) or separate (self-transfer) depends on your tolerance for risk versus your desire for savings. Booking "together" on a single PNR (Passenger Name Record) is almost always better for international connections because the airline is legally obligated to rebook you for free if a delay causes you to miss your connection. It also ensures your luggage is checked through to the final destination. Conversely, booking "separate" tickets—often called "ticket hacking"—can sometimes save hundreds of dollars, especially when combining a major carrier with a low-cost regional airline. However, the risk is high: if your first flight is late, the second airline views you as a "no-show," and you may lose the entire value of that ticket. In 2026, many travel platforms offer "self-transfer insurance" to mitigate this, but for most travelers, the "peace of mind" and baggage protection offered by a single, unified booking far outweigh the potential savings of separate tickets, particularly on complex routes involving different airline alliances.