Southwest Airlines Launches 5 New International Routes: See Full List Now

Published Nov 10, 2026, 3:55 PM EST Journalist – Aaron is an aviation and travel journalist with 14 years of experience in the travel and tourism industry. His background spans airport operations, aviation infrastructure, and travel consulting, having worked with global organizations across New Zealand, Europe, and North America. Combining industry expertise with firsthand travel experience across more than 52 countries and five continents, Aaron covers airlines, airports, aviation policy, and the wider travel sector. He is based in Canterbury, New Zealand. His work has been published in Simple Flying and featured by MSN, SAM CHUI Aviation & Travel, EIN News, Pakistan Defence, and Climate Depot. Southwest Airlines will launch a total of five new international routes to its growing network, as the world's largest operator of the Boeing 737 debuts a number of new services during the Northern Hemisphere winter season. The newest route, which took flight on November 1, connects Las Vegas to Mexico, while more routes are expected to come online at the beginning of 2027. This article will examine Southwest's five new international routes during the winter travel season, which runs from October 25 through March 27, 2027. Southwest Airlines Connects Las Vegas To Puerto Vallarta Credit: Robin Guess | Shutterstock Dallas-based Southwest's newest international route connects Las Vegas Harry Reid International Airport (LAS) to Mexico's Pacific Coast, with up to six weekly flights to Puerto Vallarta (PVR). The route, which began on November 1, becomes the airline's third international service from the Nevada airport after Cancun International Airport (CUN) and San Jose del Cabo (SJD). For travelers to Puerto Vallarta, Southwest operates year-round to Denver (DEN), Houston (HOU), Las Vegas (LAS), Orange County (SNA), Phoenix (PHX), St. Louis (STL), and San Diego (SAN). Seasonal destinations include Austin (AUS) and Sacramento (SMF). Loading map… Drag to explore Southwest is Puerto Vallarta's second-largest international carrier by total destinations served, with nine. This follows Canadian carrier WestJet with 12, and ahead of both United and Delta at six. From To Start Date Competition Las Vegas (LAS) Puerto Vallarta (PVR) November 1, 2026 No other airline operating the route Nashville Gains Two New Southwest International Routes Credit: Robin Guess | Shutterstock Beginning in the New Year, Southwest continues to expand from Nashville, as the hybrid airline begins a new nonstop service to both Liberia (LIR) in Costa Rica and a link to the picturesque island of Aruba (AUA). These services will be uncontested, with Southwest being the only airline connecting to the two cities nonstop. Southwest remains the biggest airline at Nashville by far, with more than 56% of all market share at the airport. This is ahead of both American Airlines and Delta. From To Start Date Competition Nashville (BNA) Liberia (LIR) February 13, 2027 No other airline operating the route Nashville (BNA) Aruba (AUA) March 13, 2027 No other airline operating the route Southwest operates up to 60 nonstop routes from Nashville to key destinations across the United States. It has a handful of international routes including Cancun and San Juan (SJU) year-round, while expanded seasonal destinations include Aruba (AUA), Montego Bay, Jamaica (MBJ), San José, Costa Rica (SJO), Cabo San Lucas, Mexico (SJD), and St. Thomas, US Virgin Islands (STT). More Choice For International Flights From Austin And Columbus Credit: Markus Mainka | Shutterstock The final two international routes launching this winter include the airline's latest service from Austin Bergstrom International Airport (AUS) to San Jose (SJO). The direct link to the capital of Costa Rica starts on March 13. Southwest remains the largest airline at Austin, maintaining around 41% of all commercial flights, ahead of Delta, which is aggressively expanding at the Texas airport. From Austin, Southwest operates to 45 destinations nonstop, with existing international routes including Cancun and San Jose del Cabo. Upcoming international routes in the winter will include San Jose, while more additional routes will kick off later next year to Nassau, Punta Cana, and Liberia. From To Start Date Competition Austin (AUS) San Jose (SJO) March 13, 2027 No other airline operating the route Columbus (CMH) Punta Cana (PUJ) March 13, 2027 Breeze Airways Columbus (CMH) will gain an additional nonstop international route this March, with Punta Cana International Airport (PUJ) in the Dominican Republic becoming the airline's newest route. The service will compete head-to-head with Breeze Airways. Other winter international routes from Columbus with Southwest include Cancun, San Juan, and Punta Cana.