Frontier Launches 4 New Routes, Including the Dominican Republic [From $29]

Updated: August 20, 2025, 4:33am CDT

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New Frontier Flights to Seattle, Dominican Republic
How To Book
Final Thoughts

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Update:

The promotional fare discussed below has now ended.

Frontier Airlines plans to add 4 new routes in late spring, including to an exciting international destination in the Caribbean.

Let’s take a look at the new routes and how you can book them!

New Frontier Flights to Seattle, Dominican Republic

Frontier Airlines will launch 4 new routes in June: Seattle Paine Field (PAE) to Denver (DEN), Las Vegas (LAS), and Phoenix (PHX); and San Juan (SJU) to Puerto Plata, Dominican Republic (POP).

Here’s a look at the routes and their frequencies:

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From	To	Start Date	Frequency
Seattle Paine Field (PAE)	Denver (DEN)	June 2, 2025	3x weekly
Seattle Paine Field (PAE)	Las Vegas (LAS)	June 2, 2025	3x weekly
Seattle Paine Field (PAE)	Phoenix (PHX)	June 2, 2025	3x weekly
San Juan (SJU)	Puerto Plata (POP)	June 19, 2025	2x weekly

These will be the airline’s first flights to Seattle Paine Field and Puerto Plata. Interestingly, Frontier is starting service at Paine Field, where Alaska Airlines already has a considerable presence. Alaska flies to LAS and PHX already from Paine, so Frontier’s service will add some competition on the routes.

How To Book

Frontier has launched promo fares for the new routes, with tickets starting as low as $29 one-way. The deals are valid between June 2, 2025, and August 18, 2025, and you must book by March 10. Keep in mind that the following travel blackout dates apply: June 28 and 29, 2025; July 3; and July 5 and 6, 2025.

Note that as a low-cost carrier, Frontier tacks on extra charges for things like baggage and seat selection.

Frontier Airbus A321 271NX (N615FR, cn 11280) (2 3 2024) — Image Credit: ZLEA via Wikimedia Commons (license)

After picking your flights, you’ll want to make sure to book your ticket using a credit card that rewards you for travel purchases. Alternatively, if you find yourself flying Frontier frequently, you can open the Frontier Airlines World Mastercard^®. Not only will you earn a sizable welcome bonus (after meeting minimum spending requirements), you’ll earn 5x miles on Frontier purchases.

Bottom Line:

Frontier has been expanding rapidly in recent weeks. Last week, the budget airline announced it would start 9 new destinations from Atlanta (ATL) this spring and summer.

Final Thoughts

Frontier is expanding operations by adding 4 new routes across its network. These routes will see flights added at Seattle Paine Field — an Alaska Airlines hub — and Puerto Plata, another new destination for Frontier. Even better, these flights are incredibly affordable, starting at just $29 each way. If you’re interested in any of these routes, book the promo fares by March 10!