Where to fly for $200, $400 or $600 this summer

Summer flights on the cheap ... if you know where to go.

First, the fine print: Not everyone will be able to find deals at the prices I’m going to show you, partly because airlines can (and do) change prices really fast thanks to supply and demand. But you can cut costs down for many flights by flying out of a big hub airport -- New York, Chicago, Los Angeles -- because the mega-cities typically have the cheapest airline tickets. Finally, don’t choose a vacation destination simply because it’s cheap, but I think it should be a factor. We have a wide variety here and with luck, one is on your bucket list.

Note: The following round-trip fares were found earlier this week using a deal-finding tool that searched for the cheapest prices for flights in July. Many of these deals are on unpopular days to fly such as Tuesday and Wednesday, but it’s how you score a better price. Take a look.

U.S. Destinations for under $200 in July

Caribbean for under $400 in July

Europe and Asia for under $600 in July

Ready to shop? Remember to always compare fares. There are several ways to pay too much for airline tickets but failure to compare is number one.

Rick Seaney is the CEO for FareCompare. Opinions expressed in this column do not necessarily reflect the views of ABC News.