Summary: Allegiant Air's 2026 expansion adds service to La Crosse, Trenton, Columbia and Philadelphia and launches multiple nonstop routes from regional US airports to Florida, the Southwest and the Midwest.

Allegiant Air new routes for 2026 will expand the carrier’s footprint across the United States, introducing service to four cities and increasing nonstop options from a number of regional airports. The additions are designed to give leisure travellers more direct, budget-friendly connections to popular vacation and regional destinations.

New cities joining Allegiant’s network

In 2026 Allegiant will begin serving four cities for the first time or restoring service, offering residents fresh nonstop access to key leisure markets, particularly in Florida and the Southwest.

  • La Crosse, Wisconsin (LSE) — nonstop to Phoenix‑Mesa, AZ (AZA) and Orlando‑Sanford, FL (SFB), starting February 2026.
  • Trenton, New Jersey (TTN) — returning service with nonstop flights to Fort Lauderdale/Miami, FL (FLL); Punta Gorda, FL (PGD); and St. Petersburg‑Clearwater, FL (PIE), beginning February 2026.
  • Columbia, Missouri (COU) — nonstop to Orlando‑Sanford, FL (SFB) and Destin‑Fort Walton Beach, FL (VPS), launching June 2026.
  • Philadelphia, Pennsylvania (PHL) — new nonstop links to Des Moines, IA (DSM); Knoxville, TN (TYS); and Grand Rapids, MI (GRR), starting May 2026.

New nonstop services from existing bases

Alongside market entries, Allegiant is adding several nonstop routes from airports it already serves. The focus is on connecting smaller regional airports directly to high-demand leisure and midwestern destinations, cutting the need for connecting flights.

  • La Crosse Regional Airport (LSE) — service to AZA and SFB from February 2026.
  • Trenton‑Mercer Airport (TTN) — nonstop to FLL, PGD, and PIE beginning February 2026.
  • Columbia Regional Airport (COU) — nonstop to SFB and VPS starting June 2026.
  • Philadelphia International Airport (PHL) — nonstop to DSM, TYS and GRR, launching May 2026.
Allegiant Air aircraft at a regional airport illustrating new domestic routes and destination connections
Allegiant is adding regional nonstop services to broaden its low-cost network in 2026

Key routes and launch dates to watch

Several headline routes will start in the early months of 2026, with more commencements through spring and early summer to match seasonal travel demand.

  • Albany, NY (ALB) ↔ Fort Lauderdale/Miami, FL (FLL) — launching February 2026.
  • Burbank, CA (BUR) ↔ Des Moines, IA (DSM) — starting May 2026.
  • Santa Ana/Orange County, CA (SNA) ↔ Phoenix/Mesa, AZ (AZA) — beginning February 2026.
  • Gulf Shores/Orange Beach, AL (GUF) ↔ Louisville, KY (SDF) — commencing May 2026.

What this expansion means for travellers

For budget-conscious passengers and those in smaller communities, Allegiant’s 2026 schedule brings more point-to-point options, reducing travel time and often lowering overall trip costs by avoiding connections. The increased Florida connectivity will be especially relevant for leisure travellers seeking direct, affordable flights to the Sunshine State.

  • More nonstop choices from regional airports mean fewer connections and shorter door-to-door times.
  • Expanded seasonal and year-round links provide greater flexibility for leisure travel planning.
  • Competition on these thin routes may help keep fares affordable for travellers.

Tip: If you live near a regional airport, check Allegiant’s schedules — direct flights to popular destinations could save both time and money compared with routings through major hubs.

Why this matters: Allegiant’s network growth highlights the ongoing role of low-cost carriers in opening direct links between smaller communities and major leisure hubs. For travellers, the expansion offers more affordable, convenient options; for airports and regional economies, it can mean increased visitor numbers and tourism-related revenue.