Southwest currently flies internationally mostly to vacation spots in Mexico, the Caribbean, and Central America, plus a few newer beach destinations announced for 2026.

Main international regions

Southwest is still a U.S.-focused airline, but its international network has grown steadily over the last decade. The airline’s strategy is to serve leisure destinations within a relatively short hop of the U.S.

Typical regions you can reach on Southwest from U.S. gateways include:

  • Mexico
  • The Caribbean
  • Central America

These routes are generally operated from big Southwest bases like Houston, Dallas, Denver, Phoenix, Las Vegas, Baltimore, Orlando, and others, rather than from every airport they serve.

Examples of international destinations

Exact lists shift over time, but as of early 2026, travel and points blogs highlight roughly “a dozen-plus” international cities in these regions. Common examples include:

  • Mexican beach destinations such as Cancun, Los Cabos, and Puerto Vallarta
  • Caribbean islands like Jamaica and other resort-focused islands (served seasonally or year‑round depending on demand)
  • Central American vacation spots (often marketed as quick warm‑weather getaways)

Because Southwest frequently tweaks schedules, adds seasonal routes, and shifts frequencies, any static list you see online can become outdated within a few months.

What’s new for 2026

For 2026, route announcements focus heavily on more Mexico and Caribbean connectivity, especially out of Las Vegas and other large stations. Highlights include:

  • New nonstop service from Las Vegas to Cancun, Los Cabos, and Puerto Vallarta starting June 4, 2026
  • Expanded international options as part of a broader 2026 network refresh that also adds U.S. routes and changes to policies like seating and baggage

Some coverage also mentions new flights to Sint Maarten and other island destinations via partnerships or new routes, again fitting the warm‑weather leisure pattern.

Quick planning tips

If you’re trying to decide “where does Southwest fly internationally” for an upcoming trip, the most reliable approach is:

  1. Go to Southwest’s booking/search page and choose your U.S. departure city.
  2. Select “international” or search popular leisure spots (Cancun, Montego Bay, etc.).
  3. Check different dates, since some routes are seasonal or only on certain days.

Because Southwest’s international network is concentrated rather than global, it’s great when you want an easy, relatively short flight to a beach or resort region—but not for long‑haul trips to Europe, Asia, or Africa.

Information gathered from public forums or data available on the internet and portrayed here.