Beyond the loyalty ecosystem, a separate set of tactics reduces the cash cost of flights. Positioning flights involve taking a cheap hop to a hub city to start from a departure point with unusually good fares. Open jaw bookings fly into one city and out of another, eliminating the cost of returning to the starting point. Stopovers of 24 hours or more on a single ticket are sometimes free on hub-carrier routings and effectively add a city to the trip; airlines like Icelandair, Turkish, and Singapore have historically offered generous free stopover programs.
Some tricks carry meaningful risk. Hidden city ticketing books a connection where the layover city is the actual destination, exploiting the fact that airlines price connecting flights lower than direct ones in certain markets. Throwaway ticketing books extra legs without intending to fly them. Both violate airline rules and can result in account termination, confiscated miles, or being banned from the program. Fuel dumping, a once-popular technique to bypass carrier-imposed fuel surcharges by routing through low-surcharge hubs, is mostly defunct. For most travelers, safer specialties are more valuable: fifth freedom flights, where an airline operates between two foreign countries, can offer exceptional premium cabin deals at economy prices.
Flight search itself has its own folklore. The "Tuesday booking myth" — that flights are cheapest on Tuesdays — is largely debunked; modern revenue management systems update prices continuously. In reality, the best window is generally 1–3 months ahead for domestic travel and 2–8 months for international, with a fare cycle that often finds lows somewhere between 21 and 90 days before departure. Google Flights, Skyscanner, and Momondo are the workhorses here: Google Flights for its calendar view and price alerts, Skyscanner for the cheapest routings including budget carriers, and Momondo for surfacing unusual itineraries. Mistake fares, the rare pricing errors that airlines sometimes honor, are essentially lotteries; the rule is to book first and plan later, avoiding non-refundable commitments until the airline confirms the ticket. For US bookings, the Department of Transportation's 24-hour rule requires carriers to allow cancellation within 24 hours of purchase (or, if booking more than a week before departure, up until 168 hours). Booking direct with the airline is generally best for customer service and credit, while online travel agencies (OTAs) can complicate changes and cancellations.