Allegiant Air Expands in 2026 with New Routes from La Crosse, Trenton, Columbia, Philadelphia, Albany, Burbank, Santa Ana, Gulf Shores, and More

Allegiant Air, known for offering budget-friendly air travel across the United States, is taking things to the next level with its expansion in 2026. The airline has announced a comprehensive new list of nonstop routes that will begin operating in the coming year, providing travelers with even more options to explore the US and beyond.
This ambitious expansion will add a slew of new destinations, further enhancing Allegiant’s network and offering even more affordable options for passengers. From new cities to expanded services from key airports, here’s everything you need to know about Allegiant Air’s new 2026 flight routes.
New Routes and Market Expansions Set for 2026
In its latest expansion, Allegiant is venturing into new cities and strengthening its presence in others, ensuring that passengers have access to more direct flights with minimal layovers. This move reflects the airline’s commitment to providing affordable travel with added convenience for a growing customer base.
New Cities Welcoming Allegiant Air Service in 2026
Allegiant Air is introducing service to four new cities in 2026, expanding its footprint across the US. These cities are set to receive nonstop flights from various key airports, providing increased accessibility to Allegiant’s affordable services. The new cities being added to Allegiant’s route network are:
- La Crosse, Wisconsin (LSE) – Allegiant will begin flying to La Crosse from Phoenix‑Mesa, Arizona (AZA), and Orlando‑Sanford, Florida (SFB), starting in February 2026. This new service will open up direct flight options for residents of Wisconsin, making it easier than ever to reach popular destinations in the Southwest and Florida.
- Trenton, New Jersey (TTN) – Trenton will see a return of service with nonstop flights to Fort Lauderdale/Miami, Florida (FLL), Punta Gorda, Florida (PGD), and St. Petersburg‑Clearwater, Florida (PIE). Service to these Florida hot spots will begin in February 2026, connecting Trenton with some of the most sought-after destinations in the state.
- Columbia, Missouri (COU) – This city will gain access to nonstop routes to Orlando‑Sanford, Florida (SFB), and Destin‑Fort Walton Beach, Florida (VPS). Starting in June 2026, these new flights will bring an affordable option for residents in the central US to enjoy a beach vacation in the Sunshine State.
- Philadelphia, Pennsylvania (PHL) – Philadelphia will be newly served with nonstop flights to Des Moines, Iowa (DSM), Knoxville, Tennessee (TYS), and Grand Rapids, Michigan (GRR) beginning in May 2026. These routes are aimed at expanding Allegiant’s East Coast presence and providing easy access to midwestern and southern cities.
Expanded Services from Existing Markets
In addition to entering new markets, Allegiant is also adding new nonstop routes from its existing bases, giving passengers more flight options to top destinations across the US. Here are some of the new routes set to begin in 2026:
- From La Crosse Regional Airport (LSE) – This new service from La Crosse will offer nonstop flights to Phoenix‑Mesa, Arizona (AZA) and Orlando‑Sanford, Florida (SFB), starting in February 2026. La Crosse residents will now have a more convenient option for reaching Florida and the Southwest region.
- From Trenton‑Mercer Airport (TTN) – Allegiant’s Trenton expansion will bring nonstop routes to Fort Lauderdale/Miami, Florida (FLL), Punta Gorda, Florida (PGD), and St. Petersburg‑Clearwater, Florida (PIE), starting in February 2026. This expansion will make it easier for travelers to get to Florida’s best vacation spots.
- From Columbia Regional Airport (COU) – Columbia will enjoy new nonstop routes to Orlando‑Sanford, Florida (SFB) and Destin‑Fort Walton Beach, Florida (VPS), starting in June 2026. This provides Central Missouri residents with direct access to some of Florida’s most popular coastal destinations.
- From Philadelphia International Airport (PHL) – Allegiant is adding nonstop routes to Des Moines, Iowa (DSM), Knoxville, Tennessee (TYS), and Grand Rapids, Michigan (GRR) from Philadelphia, which will all start in May 2026. This marks a significant network expansion for Allegiant in the Northeast.
Key Destinations and Launch Dates
The new nonstop flights in 2026 will give travelers direct access to prime destinations with easy travel options. Some of the standout routes to look out for include:
- Albany, NY (ALB)
Fort Lauderdale/Miami, FL (FLL) – Launching February 2026. This route will serve the increasing demand for affordable travel to Florida from the Albany area. - Burbank, CA (BUR)
Des Moines, IA (DSM) – This route is set to start in May 2026, making it easier for West Coast residents to head to the Midwest. - Santa Ana/Orange County, CA (SNA)
Phoenix/Mesa, AZ (AZA) – Another addition to the network, starting in February 2026. This route will offer even more affordable options for those traveling from Southern California to Arizona. - Gulf Shores/Orange Beach, AL (GUF)
Louisville, KY (SDF) – Starting in May 2026, this route brings the charm of the Alabama Gulf Coast to travelers from Kentucky, providing another option for southern beach vacations.
How These Routes Will Impact Travelers
The addition of these nonstop services and new markets will have a significant impact on the travel industry, especially for budget-conscious passengers seeking affordable travel options. Allegiant’s expansion not only helps fill in gaps in the market but also brings greater convenience for those traveling between smaller regional airports and popular vacation destinations.
By offering more direct flights, Allegiant is set to save passengers time and money on connecting flights, allowing them to enjoy faster, more affordable travel to many key vacation spots across the US. For those looking for beach getaways, the increased number of Florida routes will offer more flexibility and competitive prices.
The Future of Allegiant Air’s Network
Looking ahead, Allegiant Air is likely to continue its trend of expanding to new cities and offering affordable direct flights that cater to travelers seeking convenience and cost-efficiency. The airline’s commitment to keeping fares low, coupled with the introduction of new markets, is poised to solidify its position as a leading low-cost carrier in the US.
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