Frontier Airlines announced 20 new routes on Tuesday from major metropolitan areas, with some fares as low as $29.

The new domestic and international routes are launching from Houston, Detroit, Fort Lauderdale, Dallas, Charlotte and Baltimore later this year into early next year.

"Frontier is not just about delivering low fares - we’ve made major enhancements, from product upgrades to the most rewarding loyalty program, and investments in technology and service, as part of The New Frontier," Barry Biffle, CEO of Frontier Airlines, said in a statement.

"That's why Frontier is America’s Low Fare Airline, delivering the best value every day - and we see a clear path to being the number one low-fare carrier in the top 20 U.S. metros," he said.

The new routes' intro fares are $29 to $89. So

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