Top 4 Low-Cost Airlines You Never Heard Of

Since last November, airline has offered nonstop commercial service to Grand Bahama Island from Baltimore, Md.; Raleigh-Durham, N.C.; Louisville, Ky.; Richmond, Va.; and Fort Lauderdale, Fla. That contract ends on April 30, but an airline spokesperson tells ABCNews.com the airline plans to announce new routes by the end of this week. Most recently, the airline stepped in to offer service to Fort Myers, Fla. From Springfield and Rockford, Ill. for passengers stranded by the suspension of service by DirectAir.

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Two more tips: Keep in mind not every airline's fares can be found on the traditional online travel booking sites like Expedia and Orbitz. Even giant Southwest's fares can only be found on its own site. And once the AirTran merger with Southwest is complete, it's likely those fares will also disappear.

Finally, though some airlines are defined as "legacy" carriers and others as "low-cost," the truth is that there's very little difference in prices on routes where carriers compete. An airline classified as "low-cost" many have indeed once offered lower prices, but now that term primarily refers to a less complicated fare structure and a certain type of flying experience -- which in fact is often a better one than you'll find on the legacy carriers.