Choose a flight search engine. There are many different flight search engines available, such as Google Flights, Kayak, and Skyscanner. Each search engine has its own strengths and weaknesses, so it’s important to compare a few before you choose one. Book your flight. Once you’ve found a flight that you’re happy with, you can book it through the flight search engine or directly with the airline. You can also be flexible with your travel dates, consider using a travel agency, sign up for email alerts, and use a credit card that offers travel rewards.