You have a lot of choices when you fly internationally from the U.S. and it's important to remember that not all budget carriers are the same. Scott's Cheap Flights- which alerts users to the best international flight deals-recently compared low-cost international airlines flying all over the world to determine the best and worst for travelers seeking cheap flights out of the U.S.

Flying to Europe? Consider Norwegian Air, which services popular destinations throughout the continent from more than a dozen U.S. cities. You'll still get a free personal item and carry-on when you book their basic LowFare airfare and many of Norwegian's routes feature free Wi-Fi.

Travelers heading north of the border can't go wrong flying Air Canada Rouge, a relatively new airline offering a similar experience to that of Air Canada. A standard price for a roundtrip flight from New York City to Toronto in economy runs about $192 when you book three months out, according to Scott's Cheap Flights.

Consistently cheap fares, a modern fleet and free onboard entertainment systems make this new low-cost airline a no-brainer for flights from the U.S. to Barcelona or Paris. Launched less than two years ago, LEVEL operates affordable flights out of Boston, San Francisco and New York City.

JetBlue rewards travelers flying from the U.S. to Latin America and the Caribbean with above-average legroom and its Best Fare Guarantee. Plus, even economy passengers receive snacks and beverages, complimentary Wi-Fi and in-flight entertainment.

Flying from Honolulu to nearly 30 destinations throughout Asia, AirAsia X wins passengers over with phenomenal customer service and a stellar mobile app allowing them to conveniently check in and monitor their flight status.

Frontier Airlines continues to expand its route network and even flies kids for free. However, the carrier gets knocked for operating older planes with uncomfortable seats and a lack of sufficient legroom. What's more, it charges a lot of fees each way, including $35 for a carry-on bag.

WOW Air's famously low fares come with sizable fees. Scott's Cheap Flights points out that you won't even get a glass of water for free on this airline. Meanwhile, recent financial trouble has led the budget carrier to drop some major U.S. cities from its service.

Scoot's advertised fares can oftentimes be deceiving and even customers who search months in advance are likely to struggle to find a low-fare flight from Honolulu to one of the carrier's more than 50 destinations in Asia.

Scott's Cheap Flights warns of lackluster customer service, the potential for delays and a slew of fees for travelers flying Spirit Airlines from the U.S. to Latin America or the Caribbean.

It's been less than one year since Sun Country Airlines left passengers stranded in Mexico. If you're looking to fly to Central America, the Caribbean or Mexico for cheap, you're better off booking with JetBlue. Scott's Cheap Flights notes that "there's not much flexibility in dates and prices aren't exceptionally cheap."