Frontier Airlines Wraps Up 2025 with Major International Expansion from Atlanta

Frontier Airlines is closing out the year with a significant holiday gift for Atlanta travellers. The Denver-based ultra-low-cost carrier (ULCC) announced today the launch of six new routes from Hartsfield-Jackson Atlanta International Airport (ATL) this month, significantly expanding its footprint in the Caribbean and Mexico.

The expansion, which brings Frontier’s total nonstop destinations from Atlanta to 61, includes highly anticipated services to The Bahamas, Turks and Caicos, St. Maarten, and two popular resort destinations in Mexico, along with a key domestic connection to the Midwest.

Photo: AeroXplorer | Harrison Bacci

A New Gateway to the Tropics

For Atlanta residents looking to escape the winter chill, the timing is strategic. The new roster of flights focuses heavily on "sun and sand" leisure destinations, challenging legacy carriers on routes typically dominated by higher fares.

“There’s a lot to be excited about as the new year approaches – from our expanding network to rolling out our First Class experience – and we’re thrilled to offer travellers even more affordable flight options from Atlanta as we continue to grow,” said Josh Flyr, Vice President of Network and Operations Design at Frontier Airlines.

The New Route Lineup

The rollout of these routes from ATL is staggered throughout December, with some services having already commenced. The full schedule of new additions includes:

Strategic Growth at the World's Busiest Airport

This announcement cements Frontier's position as a dominant low-cost player at ATL. By offering nonstop service to premium vacation spots like Turks and Caicos and Los Cabos (San José del Cabo), Frontier is targeting budget conscious vacationers who might otherwise be priced out of direct flights or forced to make connections.

The inclusion of Milwaukee as the sole domestic addition in this batch strengthens the carrier's connectivity for the Midwest, offering a low-cost alternative for snowbirds heading south or Atlantans visiting family over the holidays.

Photo: AeroXplorer | Dalton Hoch

"The New Frontier" Experience

This network expansion coincides with Frontier's broader "The New Frontier" initiative, a brand overhaul aimed at shedding the airline's bare bones reputation. Passengers on these new routes may have the opportunity to book the new UpFront Plus seating option, which guarantees an empty middle seat and extra legroom in the first two rows; a move designed to offer a "business class light" experience at a fraction of the cost.

Travellers looking to take advantage of the introductory fares should book quickly, as these promotional prices are subject to availability.

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About Frontier Airlines:

Frontier Airlines, headquartered in Denver, Colorado, operates as a leading ultra-low-cost carrier (ULCC) in the Americas. The airline’s strategy is centred on its core mission: "Low Fares Done Right," which aims to capture the budget-conscious leisure traveler by offering highly competitive base fares and then generating significant revenue through ancillary services. The company operates more than 100 A320 family aircraft and has the largest A320 NEO fleet in the U.S.