What are the best apps to find and book cheap flight tickets?

Kayak's "Hacker Fares" combine one-way flights on different airlines to create cheaper itineraries than roundtrip tickets.

Google Flights' price prediction algorithm can forecast future ticket prices, advising users on the best time to book for maximum savings.

Hopper's "Price Freeze" option lets you lock in a flight price for up to 7 days, giving you time to decide without risking a fare increase.

Momondo searches over 900 travel sites to find the most competitively priced flights, including lesser-known budget airlines.

CheapOair's "Price Drop Payback" feature refunds the difference if the price of your booked flight decreases before your trip.

Expedia's "Bundle Deals" combine flights, hotels, and rental cars, often resulting in significant savings compared to booking each component separately.

Orbitz's "Price Assurance" automatically refunds the difference if another user books the same flight for a lower price.

Airfarewatchdog's human-curated flight deals and price drop alerts help travelers capitalize on limited-time promotional fares.

Skyscanner's "Multi-City" search allows users to build complex itineraries across multiple destinations, optimizing for the lowest overall airfare.

Kayak's "Explore" feature displays a heatmap of the cheapest flight destinations from your location, inspiring spontaneous travel.

Google Flights' "Flexible Dates" tool compares prices for travel on different days, revealing the most cost-effective times to fly.

Hopper's predictive analytics engine uses historical data to recommend the best time to book a flight for a specific route to secure the lowest fares.

Momondo's "Everywhere" search scans over 900 travel sites to find the cheapest flights, even to destinations you may not have considered.

CheapOair's mobile app leverages real-time data to notify users of flash sales and limited-time airfare discounts.

Expedia's "Price Matcher" feature refunds the difference if you find a lower price for the same flight on another site within 24 hours of booking.

Orbitz's "Price Guarantee" promises to match or beat any other online price for the same flight, hotel, or package deal.

Airfarewatchdog's comprehensive database of airline policies and fees helps travelers anticipate and avoid unexpected charges.

Skyscanner's "Calendar View" displays a monthly overview of flight prices, allowing users to identify the most budget-friendly travel dates.

Kayak's "Explore Destinations" tool uses your travel preferences to suggest the most affordable destinations based on your budget and interests.