Southwest Airlines (WN) airline code, fares and API for travel agents
- IATA WN
- ICAO SWA
- Low-cost
Search Southwest Airlines (WN) fares
Southwest Airlines airline codes
- IATA code
- WN
- ICAO code
- SWA
- Main hub
- Dallas (DAL)
- Alliance
- Not in a global alliance
- Airline type
- Low-cost
- Country
- United States
About Southwest Airlines
Southwest Airlines is a Dallas-based low-cost carrier that flies mostly within the United States. Rather than funnelling traffic through one or two very large hubs, it spreads its flying across many bases such as Dallas Love Field, Denver, Las Vegas, Baltimore, Chicago Midway, Phoenix and Houston Hobby, and it sells a lot of point-to-point trips. Beyond the mainland it serves Hawaii, Mexico, Central America and the Caribbean. Southwest has no alliance membership and operates a single economy cabin, with fare bundles that differ in flexibility and extras.
Southwest historically sold most of its seats through its own channels, so its presence in third-party systems is more limited than that of other US airlines. On IATA.co, Southwest Airlines fares appear in your search results whenever our flight suppliers offer them for your route and dates, and you should not assume they will be there for every search. Searches run live in the booking portal or through the flights API, and confirmed bookings are paid from your prepaid balance.
Southwest Airlines airline codes explained
Southwest Airlines uses the two-letter IATA airline code WN and the three-letter ICAO code SWA. The IATA code WN is the one shown on tickets, fare displays and booking screens, while the ICAO code SWA is used in air traffic control and flight planning.
Southwest Airlines is a low-cost carrier, based in United States, operating mainly from Dallas (DAL). It is not part of a global airline alliance.
Booking Southwest Airlines fares as a travel agent
Travel agents book Southwest Airlines fares on IATA.co without their own IATA accreditation. Activate an agency account, top up a prepaid balance, then search live WN fares in the booking portal: the price, baggage and fare rules are shown with each offer before you confirm, and the amount is deducted from your balance. Southwest Airlines results appear whenever our flight suppliers return them for your route and dates, so what you can book follows live supplier content rather than a direct airline deal.
Search Southwest Airlines (WN) through the flights API
Developers and agencies can run the same Southwest Airlines search from their own site, app or back office through the IATA.co flights API. Filter a search by the carrier code WN and read the fares back as JSON, then book from the same prepaid balance. See the flights API and the API docs for the full reference.
GET /api/v1/flights/search?origin=DAL&destination=DXB&date=2026-12-14&carrier=WN
Host: iata.co
Authorization: Bearer YOUR_API_KEY
HTTP/1.1 200 OK
{
"carrier": "WN",
"flights": [
{ "airline": "WN", "from": "DAL", "to": "DXB", "price": 148.20 }
]
}Example request and response. Carrier codes filter the search; the full reference is unlocked with your API key.
Southwest Airlines at a glance
- US low-cost carrier headquartered at Dallas Love Field
- Point-to-point network spread across many bases, not one central hub
- Not a member of any global alliance
- Flies within the US and to Mexico, Central America and the Caribbean
Southwest Airlines (WN) questions
Southwest Airlines' two-letter IATA airline code is WN, and its three-letter ICAO code is SWA. The IATA code is the one you see on tickets, timetables and booking screens.
Southwest Airlines' ICAO code is SWA. ICAO codes are three letters and are used in air traffic control and flight planning, while the two-letter IATA code WN is used in ticketing and reservations.
Yes. On IATA.co you book Southwest Airlines fares through the platform from a prepaid balance, so you do not need your own IATA accreditation. Southwest Airlines fares appear in your results whenever our flight suppliers offer them for your route and dates.
It depends on what our flight suppliers return. Whenever Southwest Airlines content — including NDC fares — is offered by a connected supplier for your route and dates, it appears in your WN search results and can be booked from your balance or through the flights API.
Sometimes. Southwest fares appear in your search results whenever our flight suppliers offer them for your route and dates, but the airline's distribution through third parties is limited, so it will not show for every search.
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