Southwest currently flies to more than 100 destinations across the U.S., plus Puerto Rico, Mexico, the Caribbean, and a few new international and Alaska routes coming online for 2026.

Big picture: where Southwest flies

Southwest’s network is built around U.S. domestic service, then layers on beach and vacation spots nearby.

  • Over 100 destinations in 40+ U.S. states, plus Puerto Rico.
  • Service to Mexico and the Caribbean (for example CancĂșn, Los Cabos, Puerto Vallarta, San Juan, and more).
  • Focus on leisure and short‑ to medium‑haul business routes rather than ultra‑long‑haul international flights.

Southwest does not fly everywhere globally; think “Americas and nearby islands,” not Europe or Asia directly from its own aircraft.

Main U.S. regions they cover

Southwest’s U.S. map is dense, especially in the West, Texas, the Midwest, and Florida.

  • West: California cities (including Los Angeles area, Bay Area, and others), Nevada (Las Vegas, Reno), Arizona, Colorado, Pacific Northwest, and more.
  • Central & Texas: Strong presence in Texas plus many mid-continent cities, making it easy to connect across the country.
  • Midwest & East: Multiple cities in states like Missouri, Indiana, Tennessee, and many others, plus East Coast and Mid‑Atlantic coverage.
  • Florida & Puerto Rico: Frequent service into Florida cities and San Juan, with Orlando in particular connecting to more than 60 other destinations.

The exact city list is long, so the best way to check a specific pair (e.g., “Denver to Miami”) is to use Southwest’s online route map or any route list tool.

International, Caribbean, and Mexico

Southwest’s international strategy is to focus on warm‑weather vacation destinations within a few hours’ flight of the U.S.

  • Mexico: CancĂșn, Los Cabos, Puerto Vallarta and other leisure destinations, often from major Southwest cities like Las Vegas and Orlando.
  • Caribbean and nearby: San Juan (Puerto Rico), St. Thomas (U.S. Virgin Islands), and new service planned to Sint Maarten.
  • These flights are typically seasonal or frequency‑adjusted around peak vacation periods.

If you’re picturing “beach trip from a big U.S. city,” there’s a good chance Southwest has at least one connection that works.

What’s new or coming in 2026

Southwest is actively expanding its map into new vacation and “edge” destinations like Alaska and additional islands.

  • New cities announced for 2026 include Anchorage (Alaska), St. Thomas (U.S. Virgin Islands), Santa Rosa/Sonoma (California), Knoxville (Tennessee), and Sint Maarten.
  • New and expanded routes include:
    • Anchorage–Denver and Anchorage–Las Vegas.
* Las Vegas–CancĂșn, Las Vegas–Los Cabos, Las Vegas–Puerto Vallarta.

* Boston–San Diego, Austin–Cincinnati, and more frequencies from LAX to Sacramento, San Francisco, and San Jose.

* Orlando adding more flights to 11 cities, including Austin, Baltimore, Las Vegas, Kansas City, Milwaukee, New Orleans, Pittsburgh, Louisville, Nashville, and San Juan.

These additions make Las Vegas and Orlando even stronger hubs for both domestic and international leisure travel.

How to quickly see if Southwest flies your route

Because the full destination list is long and keeps changing, the most reliable way to check is to plug your cities into a live route/destination tool.

You can:

  • Use Southwest’s official route list or route map: pick your origin city and see all nonstops and connections available.
  • Use third‑party “destinations” or “where they fly” lists that aggregate all current Southwest airports in 2025–2026.

If you tell me your nearest airport (or the city you’re starting from) and where you want to go, I can help you figure out whether Southwest connects those two and what type of routing to expect.