While the above search engines are great, they do not always include small airlines, especially in less popularly booked routes and/or in remote regions. If you're flying somewhere obscure, Google search and ask around if there exists a local airline. While in South America we learnt that the LADE Air in Argentina (run by the military) has cheap flights to Patagonia, which is of course not listed in mass search engines online.
When it comes to saving money on travel, flying cheap is a must. So forget all those full-frills airlines offering hot meals and oodles of legroom before dropping you off at your destination and look instead to the budget carriers currently criss-crossing the skies of the United States. In fact, there's such a wealth of low-costers in the air today that it's unlikely would-be passengers will find any destination that's not on the roster of at least one, whether its Frontier Airlines of the Rocky Mountains or Southwest, the largest no-frills flier in the world!
Another thing to note when you're booking your flight tickets online is to consider extra fees and "hidden" charges such as credit/debit card fees, baggage, meals, certain seats, extra leg room et cetera. Factor all these in before you compare between different airlines and flights before making the final purchase. Most online travel portals require you to pay via credit card, and may charge you a hefty credit card fee. But some sites also accept PayPal (including American Airlines website aa.com, Agoda.com, hotels.com). If you buy tickets directly from most airlines, you also won't be charge a credit card fee, and you should take those charges into consideration when choosing between booking through an airline website or other travel websites. Some online travel agencies let you pay via wire transfer from your bank account.
The first thing to know about finding a cheap flight is that there is no magic bullet or one secret ninja trick to doing so. There are a lot of myths online about how to find cheap flights. In fact, you’ve probably come across a ton of them on your search to find the best flight deal! They are all lies. They will lead you astray. Most websites hire terrible reporters who recycle common and outdated myths. Here are the most common that are 100% not true:
You're not crazy for thinking that a flight price has changed after searching it a few times in your web browser. Based on the cookies in your browser, flight prices do increase when a particular route is repeatedly searched, as the site wants to scare you into booking the flight quickly before prices get even higher. Always search for flights in incognito or private browsing mode to see the lowest prices.