With travel becoming more and more expensive, finding cheap flights may seem like a myth. It’s actually possible to find low cost fares, both nationally and internationally. The trick is knowing where to look.

An online search can help you find flights, but if you want the cheapest options, you’ll need more than Google. There are a number of flight-specific search engines like Skiplagged.com and Skyscanner.com that are designed to help you find the lowest prices as they come about.

You’ll also get lower prices by searching regularly. Often, airlines will offer cheap flights if they can’t fill the seats and that’s when you want to get in on the deal. Set up an alert for low prices and you’ll get an email every time there’s a price change. Once it’s low enough for you, buy the ticket and enjoy your low cost flight.

If you can stay flexible, you’ll have even more options. Don’t just search for a specific date, search a range of dates to find the best price. It’s possible to save hundreds of dollars, just by flying a day or two before or after you planned to leave.

Cheap flights aren’t a myth, but they aren’t easy to find, either. Knowing where to look is the first step to finding great prices on your next flight.