What are the top websites for finding and booking cheap flights?

Skyscanner's search algorithm can detect hidden-city ticketing, where passengers intentionally book a flight with a layover at their desired destination to save money, though this practice is generally frowned upon by airlines.

Kayak's "Hacker Fares" feature allows users to book one-way flights on different airlines to construct a cheaper roundtrip itinerary, a strategy that can lead to significant savings.

Google Flights' price tracking and fare alert system uses machine learning to predict future price movements, helping travelers decide the best time to book their tickets.

Expedia's package deals, which bundle flights, hotels, and rental cars, can sometimes be cheaper than booking each component separately, thanks to negotiated discounts with suppliers.

Momondo's "Explore" function enables users to discover the cheapest destinations from their departure point, inspiring spontaneous and cost-effective trip planning.

CheapOair's opaque pricing, where the airline or routing is hidden until after purchase, can lead to steep discounts, but requires a higher tolerance for uncertainty.

Hopper's predictive algorithms analyze billions of flight prices to provide precise recommendations on the best time to book, with the potential to save travelers up to 40% on airfare.

Skiplagged's "hidden city" ticketing strategy, which involves booking a flight with a layover at the traveler's desired destination and skipping the final leg, can offer substantial savings but is against most airlines' policies.

Southwest Airlines' unique pricing structure, with no change or cancellation fees, allows for greater flexibility and potentially lower costs compared to other domestic carriers.

FlightAware's real-time flight tracking data can help travelers anticipate and adapt to flight delays or cancellations, potentially leading to cost savings on alternative bookings.

Kiwi.com's "Nomad" feature combines multiple one-way flights from different airlines, creating unique itineraries that can be cheaper than traditional roundtrip bookings.

Travelocity's "Price Match Guarantee" promises to refund the difference if a customer finds a lower price for the same flight on another website, potentially saving travelers money.

Orbitz's "Away We Go" program offers discounted package deals to surprise destinations, allowing adventurous travelers to experience new places at a lower cost.

Priceline's "Name Your Own Price" feature allows users to bid on flights, potentially securing deeply discounted tickets, though the airline and routing details are revealed only after the purchase.

Hipmunk's "Agony" sorting algorithm prioritizes the overall travel experience, not just the cheapest fare, helping travelers find the best balance between price and convenience.

JetRadar's comprehensive search engine scans over 750 airlines and online travel agencies to uncover the most competitive flight prices, including low-cost carriers.

TripAdvisor's "Flights" feature integrates user reviews and ratings, enabling travelers to make more informed decisions about the quality of their flight experience alongside the price.

CheapTickets' "Promo Codes" section offers exclusive discounts and deals that can be applied to flight bookings, potentially unlocking additional savings.

Hotwire's "Hot Rate" flights conceal the airline and exact routing until after purchase, allowing for significant discounts in exchange for reduced transparency.

Farecast, now integrated into Bing Travel, uses predictive analytics to forecast future airfare prices, helping users decide the best time to book their flights.