About Southwest Airlines
Southwest Airlines is a major United States airline headquartered in Dallas, TX. The carrier operates under the IATA designator WN and the ICAO designator SWA; air-traffic controllers address its flight crews on the radio with the callsign "SOUTHWEST". The airline was founded in 1967 and currently operates a fleet of approximately 817 aircraft.
Within the US air-travel ecosystem, Southwest Airlines sits in the "Major" segment. Major carriers operate large mainline fleets, sustain dozens of nonstop destinations across the country and the world, and dominate the gates at the largest US hubs. Their schedules tend to define what is possible for cross-country and international travel from the airports they anchor.
Codes & identifiers
| Legal / brand name | Southwest Airlines |
|---|---|
| IATA code | WN |
| ICAO code | SWA |
| Radio callsign | SOUTHWEST |
| Category | Major |
| Headquarters | Dallas, TX |
| Year founded | 1967 |
| Fleet size | 817 aircraft |
| Official website | www.southwest.com |
Hub & focus airports
The airports below are listed as hubs or focus cities for Southwest Airlines. From these airports the carrier operates the densest schedule of nonstop departures, holds the most gate space, and typically supports the broadest range of international or long-haul service.
| Airport | City | State | IATA | Class |
|---|---|---|---|---|
| Dallas Love Field | Dallas | TX | DAL |
Large hub |
| William P. Hobby Airport | Houston | TX | HOU |
Large hub |
| Chicago Midway International Airport | Chicago | IL | MDW |
Large hub |
| Harry Reid International Airport | Las Vegas | NV | LAS |
Large hub |
| Phoenix Sky Harbor International Airport | Phoenix | AZ | PHX |
Large hub |
| Baltimore/Washington International Thurgood Marshall Airport | Baltimore | MD | BWI |
Large hub |
| Denver International Airport | Denver | CO | DEN |
Large hub |
| Orlando International Airport | Orlando | FL | MCO |
Large hub |
| San Francisco Bay Oakland International Airport | Oakland | CA | OAK |
Large hub |
| Nashville International Airport | Nashville | TN | BNA |
Large hub |
Booking & service notes
Schedules, fares, and aircraft assignments for Southwest Airlines change frequently, sometimes weekly. The data on this page is intended as a stable reference for codes, headquarters, fleet scale, and hub list; for live availability, fare class rules, baggage policies, and seat selection, always consult the carrier's own booking system at www.southwest.com. When a flight is operated under Southwest Airlines's code but flown by a regional partner, the operating carrier is normally disclosed on the booking page; this distinction matters for elite-status benefits and, in rare cases, for irregular-operations rebooking.