Southwest Airlines Launches 15 New Routes for Spring 2027, Expands Major Hubs

Southwest Airlines is significantly expanding its route network and daily departures for the Spring 2027 travel season, highlighting aggressive growth across its major U.S. hubs. The world’s largest low-cost carrier will introduce 15 new nonstop routes while recording historic numbers of daily flights from Austin Bergstrom International Airport (AUS) and Orlando International Airport (MCO).

Austin will see the most substantive increase, with Southwest operating as many as 141 daily departures on multiple days per week, representing the airline’s largest-ever schedule from that airport. New nonstop routes from Austin include Detroit Metropolitan Wayne County Airport (DTW) four times weekly, weekly service to San Jose, Costa Rica (SJO) on Saturdays, and five weekly flights to Steamboat Springs (HDN) and Montrose (MTJ). These additions cement Southwest as the dominant carrier at Austin.

At Orlando, the carrier plans up to 214 departures on Saturdays, its highest number at the airport to date. New and increased frequencies include a third daily flight to New York LaGuardia (LGA) and a new in-state Florida service to Pensacola (PNS). The expanded Orlando schedule taps into both leisure and business travel demand, capitalizing on the area's strengthening market.

Southwest is also boosting services at Nashville International Airport (BNA) and Las Vegas Harry Reid International Airport (LAS). New routes include a twice-daily connection between Baltimore/Washington International (BWI) and Philadelphia International (PHL), and nonstop flights from Dallas Love Field (DAL) to Detroit. From Nashville, new flights to Des Moines (DSM), Wichita (ICT), and international leisure destinations such as Aruba (AUA), Liberia (LIR), Montego Bay (MBJ), St. Thomas (STT), and Punta Cana (PUJ) have been announced, providing a mix of domestic and Caribbean options.

On the West Coast, Southwest is increasing service from Honolulu (HNL) to California's Burbank (BUR) and Ontario (ONT) airports, each with five weekly flights excluding Tuesdays and Wednesdays. Weekend-only services from San Diego (SAN) to Kona (KOA) and Lihue (LIH) are also added, alongside an unusual reverse red-eye flight departing Las Vegas (LAS) at 2:45 AM for early morning arrival into Honolulu.

The airline is simultaneously adjusting frequencies network-wide, averaging over 4,000 daily departures through the week, with peaks of up to 4,400 flights on Mondays, Thursdays, and Fridays. The incremental rise in flights compared to 2026 reflects Southwest’s confidence in passenger demand during the back-to-school and Spring Break periods.

Notably, Southwest has quietly discontinued its planned nonstop daily Las Vegas to San Jose, Costa Rica route, initially slated for a November launch, and has ended a handful of other underperforming routes such as Kona to Kahului and New York to Omaha. These moves may relate to recent network rationalizations and strategic responses to the withdrawal of competitor Spirit Airlines.

Southwest’s expanded schedule contributes to easing capacity constraints at traditionally crowded airports such as Chicago Midway (MDW) by growing long-haul services from growing hubs like Nashville. Strategic slot acquisitions, especially at New York LaGuardia where Spirit's exit created openings, also enable Southwest to scale up urban gateway services.

In aggregate, the announced changes affirm Southwest’s position as the dominant low-cost airline globally, with a fleet exceeding 800 Boeing 737 aircraft. The new routes and increased frequencies offer travelers enhanced connectivity throughout the U.S., the Caribbean, and Latin America for the spring travel season, with booking available through usual channels.