Last Updated on August 26, 2026 by Daniel Globe
Southwest Airlines was incorporated in 1967 and began scheduled service on June 18, 1971, with three Boeing 737 aircraft flying between Dallas, Houston, and San Antonio. Today, it operates a much larger U.S. and near-international network built primarily around point-to-point flying, while also using important core stations to create useful connections. Its current network reaches more than 100 destinations, including major U.S. cities, Hawaii, Alaska, Mexico, Central America, and the Caribbean.
Quick Answer
Southwest Airlines flies to more than 100 destinations across the United States and nearby international markets. Its network includes Hawaii, Alaska, Mexico, Costa Rica, Belize, the Caribbean, Puerto Rico, and the U.S. Virgin Islands. International airline partnerships also make additional destinations in Europe and Asia reachable on connecting itineraries.
Key Takeaways
- Southwest serves more than 100 destinations and remains especially strong in the U.S. domestic market.
- Current foreign destinations include cities in Mexico, Costa Rica, Belize, the Bahamas, Jamaica, the Dominican Republic, Cuba, Aruba, the Cayman Islands, Turks and Caicos, and St. Maarten.
- Southwest also serves Puerto Rico and St. Thomas in the U.S. Virgin Islands, which are U.S. territories rather than foreign countries.
- Anchorage, St. Thomas, Knoxville, St. Maarten, and Santa Rosa were notable additions to the network in 2026.
- Southwest primarily operates a point-to-point network rather than a traditional hub-and-spoke system, although large core stations such as Denver, Dallas Love Field, Chicago Midway, Baltimore/Washington, Nashville, and Las Vegas provide substantial connectivity.
- Southwest now has multiple international interline partners that extend its reach beyond the destinations served directly by Southwest aircraft.
Domestic destinations served by Southwest Airlines
Southwest has one of the broadest domestic networks in the United States. Its current destination list includes large metropolitan areas, leisure destinations, regional cities, Hawaii, and Alaska. Travelers can use Southwest’s official destination and flight page to confirm the latest cities and available routes.
Convenient connections across the country
Major cities such as Chicago, Atlanta, Denver, Las Vegas, Los Angeles, New York, Nashville, Baltimore/Washington, Dallas, Houston, Phoenix, San Diego, and Orlando are important parts of Southwest’s domestic network. The airline serves both large primary airports and, in several metropolitan areas, convenient secondary or downtown airports.
Examples include Dallas Love Field (DAL), Houston Hobby (HOU), Chicago Midway (MDW), Burbank (BUR), Oakland (OAK), and San Jose (SJC). Southwest also serves major airports such as Los Angeles International (LAX), New York LaGuardia (LGA), Miami International (MIA), Boston Logan (BOS), and Chicago O’Hare (ORD).
In 2025, 74% of Southwest customers flew nonstop, and the airline operated 871 nonstop city pairs, according to Southwest’s 2025 Form 10-K.
Serving smaller and mid-sized communities
Southwest is not limited to the largest U.S. metropolitan areas. Its network also includes regional and mid-sized destinations such as Albuquerque, Boise, Bozeman, Burbank, Colorado Springs, Fresno, Little Rock, Lubbock, Manchester, Montrose, and Knoxville.
This mix allows travelers in many smaller markets to connect through larger Southwest stations without requiring every trip to pass through a single traditional hub.
Hawaii and Alaska
Southwest’s domestic network extends far beyond the contiguous United States. In Hawaii, the airline serves Honolulu on Oahu, Kahului on Maui, Hilo and Kona on the Island of Hawaii, and Lihue on Kauai. It also operates interisland service on selected routes.
Anchorage (ANC) joined Southwest’s network on May 15, 2026, giving the airline its first Alaska destination. Because schedules can be seasonal, travelers should check their exact dates rather than assume that every city pair operates every day of the year.
Adapting routes to customer demand
Southwest regularly changes frequencies and individual city pairs based on demand, seasonality, operating performance, and market conditions. A destination being part of the Southwest network does not mean your home airport has a nonstop flight to it.
Pro Tip: Search your exact origin, destination, and travel dates on Southwest.com. A city may be served by Southwest while still requiring a connection from your particular airport, and some routes operate only on selected days or seasons.
International destinations served by Southwest Airlines
Southwest’s own aircraft primarily fly internationally to nearby markets in Mexico, Central America, and the Caribbean. Its current direct network is much more extensive than simply Cancun and a few Caribbean resort destinations.
| Country or territory | Current Southwest destinations |
|---|---|
| Mexico | Cancun (CUN), Los Cabos (SJD), Puerto Vallarta (PVR) |
| Costa Rica | Liberia (LIR), San Jose (SJO) |
| Belize | Belize City (BZE) |
| Bahamas | Nassau (NAS) |
| Cayman Islands | Grand Cayman (GCM) |
| Aruba | Aruba (AUA) |
| Cuba | Havana (HAV) |
| Dominican Republic | Punta Cana (PUJ) |
| Jamaica | Montego Bay (MBJ) |
| Turks and Caicos | Providenciales / Turks and Caicos (PLS) |
| St. Maarten | St. Maarten (SXM) |
Southwest also serves San Juan (SJU) in Puerto Rico and St. Thomas (STT) in the U.S. Virgin Islands. These Caribbean destinations are U.S. territories, so they should not be described as foreign countries.
Note: Southwest does not currently list Mexico City among its Mexico destinations. Its current Mexico service is to Cancun, Los Cabos, and Puerto Vallarta.
Popular vacation spots served by Southwest Airlines
Southwest’s network includes many of the most popular leisure markets in the United States, Mexico, and the Caribbean. Flight frequencies and fares change constantly, so fixed “average prices” or flight counts can become inaccurate quickly.
| Vacation Spot | Airport | Why Travelers Go | Service Note |
|---|---|---|---|
| Orlando, Florida | MCO | Theme parks, family vacations, cruises | Major Southwest leisure destination with connections from many markets |
| Las Vegas, Nevada | LAS | Entertainment, dining, conventions, weekend trips | One of Southwest’s most important large stations |
| Los Angeles, California | LAX | Beaches, entertainment, Southern California attractions | Southwest also serves several other airports in the greater Los Angeles region |
| Denver, Colorado | DEN | Rocky Mountains, skiing, national parks, city trips | Large Southwest core station with extensive connectivity |
| Cancun, Mexico | CUN | Beaches, resorts, Riviera Maya vacations | One of Southwest’s principal Mexico leisure destinations |
Orlando is particularly popular with families visiting Walt Disney World, Universal Orlando, and other Central Florida attractions. Las Vegas attracts both leisure travelers and convention visitors, while Denver provides access to the Rocky Mountains and numerous Colorado recreation areas.
For international leisure trips, Cancun, Los Cabos, Puerto Vallarta, Punta Cana, Montego Bay, Aruba, Nassau, St. Maarten, and Costa Rica are among the notable options in Southwest’s network.
Does Southwest Airlines have hubs? Core stations explained
Southwest does not structure its network around a small set of formal hubs in the same way as traditional hub-and-spoke airlines. Southwest describes its system as primarily point-to-point, meaning a high share of customers can travel nonstop without connecting through a central hub.
That does not mean every airport is equally important. Southwest has increasingly designed its network around large core stations that support both nonstop traffic and connecting itineraries. Airports such as Denver (DEN), Dallas Love Field (DAL), Chicago Midway (MDW), Baltimore/Washington (BWI), Nashville (BNA), Las Vegas (LAS), Phoenix (PHX), and Houston Hobby (HOU) are examples of large Southwest operations.
Denver is especially useful for western connections and access to Colorado, while Chicago Midway provides strong connectivity across the Midwest and between eastern and western markets. Dallas Love Field remains central to Southwest’s Texas heritage and network.
Southwest Airlines’ route network expansion
New destinations added in 2026
Southwest’s network continued expanding in 2026. Five particularly important additions highlighted by the airline were:
- St. Thomas, U.S. Virgin Islands (STT) — service began February 5, 2026.
- Knoxville, Tennessee (TYS) — service began March 5, 2026.
- St. Maarten (SXM) — service began April 7, 2026.
- Santa Rosa / Sonoma County, California (STS) — service began April 7, 2026.
- Anchorage, Alaska (ANC) — service began May 15, 2026.
The Anchorage launch was particularly significant because it extended Southwest’s domestic footprint into Alaska. St. Maarten expanded the carrier’s foreign Caribbean network, while St. Thomas strengthened its service to U.S. Caribbean territories.
Enhancing customer experience and connectivity
Expansion is not limited to adding dots to a route map. Southwest also adjusts frequencies, launches new city pairs, adds overnight flights, and redesigns schedules to improve connectivity between existing destinations.
Hawaii remains an important part of this longer-distance domestic network. Southwest serves multiple Hawaiian islands and operates routes linking Hawaii with mainland markets as well as selected interisland flights.
Adapting to changing travel trends
Southwest has gradually increased longer-distance flying while retaining its point-to-point foundation. The airline’s 2025 Form 10-K says it has reduced some short-haul flying, shifted capacity toward longer-haul markets, introduced redeye service, and built more intentional connectivity into its network.
Evaluating new route opportunities
Southwest continually reviews passenger demand, seasonality, aircraft availability, profitability, competitive conditions, and operational performance when deciding where and how often to fly. As a result, individual routes can be added, reduced, suspended, or made seasonal even when the destination itself remains part of the network.
Southwest Airlines’ interline partnerships and global connections
Southwest’s international reach is no longer limited to destinations served by Southwest aircraft. It has built a growing network of interline partnerships that allow travelers to combine flights operated by Southwest and another airline on coordinated itineraries.
Southwest currently identifies the following interline partners:
- Air Premia
- All Nippon Airways (ANA)
- China Airlines
- Condor
- EVA Air
- Icelandair
- Philippine Airlines
- Singapore Airlines
- TAP Air Portugal
- Turkish Airlines
These partnerships can extend a journey beyond Southwest’s own near-international network. For example, Icelandair can provide onward connections toward Europe, while several Asian carriers connect with Southwest at U.S. gateway airports.
Southwest explains that interlining allows airlines to coordinate passengers and checked baggage on an itinerary using two or more carriers. This is different from a codeshare, where one airline places its own flight code on a flight operated by another carrier. Travelers should therefore avoid assuming every Southwest partnership is a codeshare.
Current partner details can be checked on Southwest’s official airline partnership page.
Southwest Airlines’ approach to route planning and network optimization
Southwest primarily uses a point-to-point model, but the modern network is more nuanced than the airline’s historic short-haul structure. According to Southwest’s 2025 Form 10-K, the company increasingly designs schedules around core stations to combine strong nonstop demand with useful one-stop itineraries.
The airline analyzes passenger demand, seasonal travel patterns, competitive conditions, airport performance, aircraft availability, and operating economics when allocating flights. It can move capacity from weaker markets to stronger ones rather than maintaining every route indefinitely.
This is why travelers should distinguish between a Southwest destination and a Southwest nonstop route. Orlando may be in the network, for example, but a traveler from a smaller Southwest city may need to connect through Baltimore, Nashville, Chicago, Denver, Dallas, or another large station.
Southwest Airlines’ commitment to serving small and mid-sized cities
Southwest continues to serve many small and mid-sized markets alongside major metropolitan areas. This gives residents of regional cities access to the broader Southwest network without requiring all service to be concentrated at the country’s largest airports.
Airports such as Burbank, Bozeman, Colorado Springs, Fresno, Little Rock, Lubbock, Manchester, Montrose, and Knoxville illustrate the range of communities represented in the network. At the same time, Southwest also operates at large airports such as Los Angeles International, Miami International, Boston Logan, Chicago O’Hare, and New York LaGuardia.
This combination is important because Southwest cannot accurately be described simply as an airline that uses secondary airports. Secondary and downtown airports remain an important part of its operating model, but today’s network includes many major primary airports as well.
Southwest Airlines’ impact on regional and local economies
Air service can support local tourism and business activity by improving access to a region. When Southwest enters or expands in a market, travelers may gain additional nonstop options, connecting itineraries, and competition among airlines.
Tourism-oriented destinations can benefit when easier air access brings visitors to hotels, restaurants, attractions, rental-car companies, and other businesses. For residents, additional air service can also make leisure trips, family visits, and business travel more practical.
The size of that economic effect varies significantly by airport and community, so it should not be assumed that every Southwest route produces the same local impact.
What Southwest travelers should know in 2026
Southwest’s route network is not the only thing that has changed. Several customer policies that were historically associated with the airline have also been updated.
Assigned seating is now standard
Southwest moved to assigned seating for travel beginning January 27, 2026. All Southwest flights now have assigned seats. Seat-selection options depend on fare type, Rapid Rewards status, credit-card benefits, and whether a traveler pays separately for an available seat.
Under the current structure, Choice Extra can include an Extra Legroom seat, Choice Preferred includes a Preferred or Standard seat, Choice includes a Standard seat, and Basic normally receives a Standard seat assignment at check-in.
Checked bags are no longer automatically free for everyone
Southwest introduced checked-bag fees for many travelers in 2025 and changed standard fees again in 2026. For mainland U.S. travel booked, ticketed, or changed on or after April 9, 2026, Basic, Choice, and Choice Preferred fares generally carry a $45 first-checked-bag fee and a $55 second-checked-bag fee.
Choice Extra includes two checked bags, while qualifying A-List, A-List Preferred, Rapid Rewards credit-card, military, and other eligible travelers may receive different baggage benefits. Travelers should check the current Southwest optional travel charges before booking because exceptions and itinerary-specific rules apply.
Warning: Do not rely on older Southwest travel guides that say every passenger receives two free checked bags or that Southwest still uses open seating. Both policies have changed.
How to check whether Southwest flies your route
The fastest way to confirm a specific trip is to search your origin and destination directly on Southwest’s website. The route map and destination list tell you where the airline operates, while the booking search tells you whether your particular city pair is available on your travel dates.
When checking a route, look for:
- whether the itinerary is nonstop or connecting;
- whether the route runs daily or only on selected days;
- whether it is seasonal;
- which airport Southwest uses in a multi-airport city;
- whether the itinerary includes an airline partner; and
- the baggage, seat, and fare rules that apply to the ticket you choose.
If you’re planning a trip to explore the destinations where Southwest Airlines flies, you may also want to check out this article on the best carry-on suitcase with a USB charger. A suitable carry-on can help you organize essentials while keeping your packing within the airline’s current cabin-baggage rules.
Future expansion plans for Southwest Airlines
Southwest continues to adjust its network rather than following a fixed long-term list of routes. Recent strategy has included longer-haul flying, redeye flights, new destinations, schedule redesigns at core stations, and international airline partnerships.
The airline has also said it intends to continue exploring additional international relationships. This approach allows Southwest customers to reach more global destinations without requiring Southwest itself to operate long-haul aircraft to Europe or Asia.
Because expansion plans and schedules change, the most reliable way to track future service is through Southwest’s official destination pages, flight schedules, and partnership announcements rather than relying on an older static list.
Frequently Asked Questions
What destinations does Southwest Airlines fly to?
Southwest flies to more than 100 destinations across the United States and near-international markets. Its network includes the continental U.S., Hawaii, Alaska, Mexico, Central America, the Caribbean, Puerto Rico, and the U.S. Virgin Islands.
Does Southwest Airlines fly internationally?
Yes. Southwest directly serves destinations in Mexico, Costa Rica, Belize, the Bahamas, the Cayman Islands, Aruba, Cuba, the Dominican Republic, Jamaica, Turks and Caicos, and St. Maarten. It also serves Puerto Rico and the U.S. Virgin Islands, which are U.S. territories.
What are some popular domestic destinations served by Southwest Airlines?
Popular domestic destinations include Las Vegas, Orlando, Denver, Chicago, Los Angeles, Nashville, New York LaGuardia, San Diego, Phoenix, Miami, Honolulu, and Anchorage.
What are some popular international destinations served by Southwest Airlines?
Popular international destinations include Cancun, Los Cabos, Puerto Vallarta, San Jose and Liberia in Costa Rica, Montego Bay, Punta Cana, Nassau, Aruba, Grand Cayman, and St. Maarten.
Does Southwest fly to Mexico City?
No. Mexico City is not on Southwest’s current destination list. Southwest currently lists Cancun, Los Cabos, and Puerto Vallarta as its Mexico destinations.
Does Southwest Airlines have hubs?
Southwest primarily describes its network as point-to-point rather than traditional hub-and-spoke. However, large core stations such as Denver, Dallas Love Field, Chicago Midway, Baltimore/Washington, Nashville, Las Vegas, Phoenix, and Houston Hobby provide substantial connectivity.
Does Southwest fly to all major airports in the United States?
No. Southwest serves many major U.S. airports but not every airport. It also uses several secondary or downtown airports, including Dallas Love Field, Houston Hobby, Chicago Midway, Burbank, Oakland, and San Jose.
Can Southwest take me to Europe or Asia?
Southwest does not operate its own long-haul flights to Europe or Asia. However, its interline partners can provide coordinated connecting itineraries that combine a Southwest flight with an international carrier such as Icelandair, Turkish Airlines, TAP Air Portugal, ANA, Singapore Airlines, EVA Air, China Airlines, Philippine Airlines, Air Premia, or Condor.
Sources
- Southwest Airlines — Where We Fly — current U.S., Mexico, Central America, Caribbean, and territorial destinations.
- Southwest Airlines 2025 Form 10-K — fleet, network structure, nonstop statistics, core-station strategy, and 2026 expansion.
- Southwest Airlines — Airline Partners — current international airline partnerships and gateways.
- Southwest Airlines — Assigned Seat Selection — current assigned-seating rules.
- Southwest Airlines — Optional Travel Charges — current baggage charges and exemptions.
- Southwest Airlines History — The Birth of Southwest Airlines — company origins and 1967 incorporation history.
