Southwest Airlines Flight Status
About Southwest Airlines
Southwest Airlines, based in United States, operates under the ICAO code SWA and the IATA code WN; its radio callsign is "Southwest". On this page you can follow Southwest Airlines flights and find the airports it serves.
How to read a Southwest Airlines flight number
Every Southwest Airlines flight number starts with WN, followed by up to four digits: that is the number on your booking confirmation and boarding pass. In flight plans the same flight carries the ICAO prefix SWA, and controllers address it as "Southwest". One thing to watch: codeshares. A ticket sold by another airline can be operated by Southwest Airlines and vice versa; live tracking follows the operating carrier's number, so if your search comes up empty, check the "operated by" line on your booking.
Southwest Airlines flights we tracked
Over the first 8 days of our own live tracking we logged 1250 aircraft movements operated by Southwest Airlines. These figures are refreshed weekly. Tracking data: adsb.lol · Route data: adsbdb.com.
Routes we tracked on Southwest Airlines
| # | Route | Tracked flights |
|---|---|---|
| 1 | San Diego (SAN) → Oakland (OAK) | 22 |
| 2 | Santa Ana (SNA) → San Jose (SJC) | 17 |
| 3 | San Jose (SJC) → San Diego (SAN) | 17 |
| 4 | San Diego (SAN) → San Jose (SJC) | 17 |
| 5 | Baltimore (BWI) → Boston (BOS) | 15 |
| 6 | Burbank (BUR) → Oakland (OAK) | 14 |
| 7 | Oakland (OAK) → Burbank (BUR) | 12 |
| 8 | Santa Ana (SNA) → Oakland (OAK) | 12 |
| 9 | San Jose (SJC) → Las Vegas (LAS) | 12 |
| 10 | Los Angeles (LAX) → Oakland (OAK) | 11 |
| 11 | Las Vegas (LAS) → Oakland (OAK) | 11 |
| 12 | Baltimore (BWI) → Albany (ALB) | 10 |
| 13 | San Jose (SJC) → Burbank (BUR) | 9 |
| 14 | San Jose (SJC) → Phoenix (PHX) | 9 |
| 15 | Burbank (BUR) → San Jose (SJC) | 9 |
| 16 | San Jose (SJC) → Los Angeles (LAX) | 9 |
| 17 | San Jose (SJC) → Santa Ana (SNA) | 8 |
| 18 | Providence (PVD) → Baltimore (BWI) | 8 |
| 19 | Oakland (OAK) → Las Vegas (LAS) | 8 |
| 20 | Atlanta (ATL) → New York (LGA) | 8 |
| 21 | Ontario (ONT) → Oakland (OAK) | 7 |
| 22 | San Diego (SAN) → Las Vegas (LAS) | 7 |
| 23 | Long Beach (LGB) → Oakland (OAK) | 7 |
| 24 | Las Vegas (LAS) → San Jose (SJC) | 7 |
| 25 | St Louis (STL) → New York (LGA) | 7 |
| 26 | Chicago (MDW) → Boston (BOS) | 7 |
| 27 | Nashville (BNA) → Chicago (MDW) | 6 |
| 28 | San Francisco (SFO) → Burbank (BUR) | 6 |
| 29 | San Jose (SJC) → Long Beach (LGB) | 6 |
| 30 | San Diego (SAN) → San Francisco (SFO) | 6 |
| 31 | Oakland (OAK) → Phoenix (PHX) | 6 |
| 32 | Boston (BOS) → St Louis (STL) | 6 |
| 33 | Los Angeles (LAX) → San Jose (SJC) | 6 |
| 34 | Phoenix (PHX) → Dallas (DAL) | 6 |
| 35 | Portland (PDX) → San Jose (SJC) | 6 |
| 36 | Portland (PDX) → Oakland (OAK) | 6 |
| 37 | Las Vegas (LAS) → San Francisco (SFO) | 5 |
| 38 | Orlando (MCO) → New Orleans (MSY) | 5 |
| 39 | New York (LGA) → Chicago (MDW) | 5 |
| 40 | Denver (DEN) → Nashville (BNA) | 5 |
| 41 | Phoenix (PHX) → Oakland (OAK) | 5 |
| 42 | Denver (DEN) → San Francisco (SFO) | 5 |
| 43 | Houston (HOU) → New York (LGA) | 5 |
| 44 | Manchester (MHT) → Chicago (MDW) | 5 |
| 45 | Chicago (MDW) → New Orleans (MSY) | 5 |
| 46 | San Jose (SJC) → Portland (PDX) | 5 |
| 47 | San Diego (SAN) → Phoenix (PHX) | 5 |
| 48 | Hartford (BDL) → Chicago (MDW) | 5 |
| 49 | Oakland (OAK) → Seattle (SEA) | 5 |
| 50 | Orlando (MCO) → Baltimore (BWI) | 4 |
| 51 | Denver (DEN) → Austin (AUS) | 4 |
| 52 | Austin (AUS) → Orlando (MCO) | 4 |
| 53 | Baltimore (BWI) → Portland (PWM) | 4 |
| 54 | Oakland (OAK) → Los Angeles (LAX) | 4 |
| 55 | Orlando (MCO) → Providence (PVD) | 4 |
| 56 | Baltimore (BWI) → Manchester (MHT) | 4 |
| 57 | Dallas (DAL) → Washington (DCA) | 4 |
| 58 | San Jose (SJC) → Ontario (ONT) | 4 |
| 59 | Manchester (MHT) → Baltimore (BWI) | 4 |
| 60 | Salt Lake City (SLC) → Denver (DEN) | 4 |
| 61 | Palm Springs (PSP) → Oakland (OAK) | 4 |
| 62 | Albany (ALB) → Baltimore (BWI) | 4 |
| 63 | St Louis (STL) → Boston (BOS) | 4 |
| 64 | Long Beach (LGB) → San Jose (SJC) | 4 |
| 65 | Oakland (OAK) → Santa Ana (SNA) | 4 |
| 66 | Baltimore (BWI) → Cincinnati / Covington (CVG) | 4 |
| 67 | San Jose (SJC) → Austin (AUS) | 4 |
| 68 | Hartford (BDL) → Baltimore (BWI) | 4 |
| 69 | San Jose (SJC) → Denver (DEN) | 4 |
| 70 | Chicago (MDW) → Orlando (MCO) | 4 |
| 71 | San Jose (SJC) → Seattle (SEA) | 4 |
| 72 | San Jose (SJC) → Salt Lake City (SLC) | 4 |
| 73 | Denver (DEN) → Oakland (OAK) | 4 |
| 74 | Jacksonville (JAX) → Baltimore (BWI) | 4 |
| 75 | Philadelphia (PHL) → Chicago (MDW) | 4 |
| 76 | Chicago (MDW) → Baltimore (BWI) | 4 |
| 77 | Seattle (SEA) → Oakland (OAK) | 4 |
| 78 | Philadelphia (PHL) → St Louis (STL) | 4 |
| 79 | Nashville (BNA) → New York (LGA) | 4 |
| 80 | Dallas (DAL) → Houston (HOU) | 4 |
| 81 | Nashville (BNA) → Baltimore (BWI) | 4 |
| 82 | Phoenix (PHX) → San Francisco (SFO) | 4 |
| 83 | Washington (DCA) → Dallas (DAL) | 4 |
| 84 | Phoenix (PHX) → Santa Ana (SNA) | 4 |
| 85 | Austin (AUS) → Oakland (OAK) | 4 |
| 86 | Fort Myers (RSW) → Minneapolis (MSP) | 4 |
| 87 | Baltimore (BWI) → Providence (PVD) | 3 |
| 88 | Baltimore (BWI) → Hartford (BDL) | 3 |
| 89 | San Francisco (SFO) → Las Vegas (LAS) | 3 |
| 90 | Oakland (OAK) → Denver (DEN) | 3 |
| 91 | Austin (AUS) → San Jose (SJC) | 3 |
| 92 | Portland (PWM) → Baltimore (BWI) | 3 |
| 93 | Austin (AUS) → New Orleans (MSY) | 3 |
| 94 | Islip (ISP) → Baltimore (BWI) | 3 |
| 95 | Albany (ALB) → Chicago (MDW) | 3 |
| 96 | Kahului (OGG) → San Jose (SJC) | 3 |
| 97 | Tampa (TPA) → New York (LGA) | 3 |
| 98 | Oakland (OAK) → Dallas (DAL) | 3 |
| 99 | Omaha (OMA) → Chicago (MDW) | 3 |
| 100 | Islip (ISP) → Nashville (BNA) | 3 |
| 101 | Oakland (OAK) → Austin (AUS) | 3 |
| 102 | New York (LGA) → Houston (HOU) | 3 |
| 103 | Baltimore (BWI) → Fort Lauderdale (FLL) | 3 |
| 104 | Spokane (GEG) → San Jose (SJC) | 3 |
| 105 | Denver (DEN) → New York (LGA) | 3 |
| 106 | Austin (AUS) → Chicago (MDW) | 3 |
| 107 | Phoenix (PHX) → Seattle (SEA) | 3 |
| 108 | Ontario (ONT) → San Jose (SJC) | 3 |
| 109 | Las Vegas (LAS) → Phoenix (PHX) | 3 |
| 110 | Chicago (MDW) → Pittsburgh (PIT) | 3 |
| 111 | Las Vegas (LAS) → Austin (AUS) | 3 |
| 112 | Las Vegas (LAS) → Long Beach (LGB) | 3 |
| 113 | Washington (DCA) → Providence (PVD) | 3 |
| 114 | Reno (RNO) → Las Vegas (LAS) | 3 |
| 115 | Dallas (DAL) → San Diego (SAN) | 3 |
| 116 | Los Angeles (LAX) → Las Vegas (LAS) | 3 |
| 117 | Dallas (DAL) → Las Vegas (LAS) | 3 |
| 118 | Phoenix (PHX) → Austin (AUS) | 3 |
| 119 | Boston (BOS) → Baltimore (BWI) | 3 |
| 120 | Washington (DCA) → New Orleans (MSY) | 3 |
| 121 | Las Vegas (LAS) → Denver (DEN) | 3 |
| 122 | Denver (DEN) → Las Vegas (LAS) | 3 |
| 123 | Washington (DCA) → Chicago (MDW) | 3 |
| 124 | Atlanta (ATL) → New Orleans (MSY) | 3 |
| 125 | Chicago (MDW) → Albany (ALB) | 3 |
| 126 | Denver (DEN) → Orlando (MCO) | 3 |
| 127 | Orlando (MCO) → Indianapolis (IND) | 3 |
| 128 | Chicago (MDW) → Fort Myers (RSW) | 3 |
| 129 | St Louis (STL) → Tampa (TPA) | 2 |
| 130 | Oakland (OAK) → Chicago (MDW) | 2 |
| 131 | Nashville (BNA) → Fort Lauderdale (FLL) | 2 |
| 132 | Columbus (CMH) → Sarasota/Bradenton (SRQ) | 2 |
| 133 | Las Vegas (LAS) → Columbus (CMH) | 2 |
| 134 | Santa Ana (SNA) → Las Vegas (LAS) | 2 |
| 135 | Reno (RNO) → Oakland (OAK) | 2 |
| 136 | Chicago (ORD) → Phoenix (PHX) | 2 |
| 137 | Las Vegas (LAS) → Bellingham (BLI) | 2 |
| 138 | Cincinnati / Covington (CVG) → Chicago (MDW) | 2 |
| 139 | Cleveland (CLE) → Baltimore (BWI) | 2 |
| 140 | San Francisco (SFO) → Phoenix (PHX) | 2 |
| 141 | Boston (BOS) → Chicago (MDW) | 2 |
| 142 | Kansas City (MCI) → Orlando (MCO) | 2 |
| 143 | Amarillo (AMA) → Austin (AUS) | 2 |
| 144 | St Louis (STL) → Dallas (DAL) | 2 |
| 145 | Seattle (SEA) → Sacramento (SMF) | 2 |
| 146 | Midland (MAF) → Dallas (DAL) | 2 |
| 147 | Oakland (OAK) → Portland (PDX) | 2 |
| 148 | Kansas City (MCI) → Las Vegas (LAS) | 2 |
| 149 | Providence (PVD) → Tampa (TPA) | 2 |
| 150 | Denver (DEN) → Houston (HOU) | 2 |
| 151 | Phoenix (PHX) → Denver (DEN) | 2 |
| 152 | Baltimore (BWI) → New York (LGA) | 2 |
| 153 | Chicago (MDW) → Denver (DEN) | 2 |
| 154 | Tampa (TPA) → Providence (PVD) | 2 |
| 155 | Ontario (ONT) → Las Vegas (LAS) | 2 |
| 156 | Chicago (MDW) → Oakland (OAK) | 2 |
| 157 | Indianapolis (IND) → Orlando (MCO) | 2 |
| 158 | Detroit (DTW) → Chicago (MDW) | 2 |
| 159 | Baltimore (BWI) → Buffalo (BUF) | 2 |
| 160 | Oakland (OAK) → Houston (HOU) | 2 |
| 161 | Honolulu (HNL) → Oakland (OAK) | 2 |
| 162 | Nashville (BNA) → Dallas (DAL) | 2 |
| 163 | Oakland (OAK) → Kahului (OGG) | 2 |
| 164 | Philadelphia (PHL) → Denver (DEN) | 2 |
| 165 | Nashville (BNA) → Columbus (CMH) | 2 |
| 166 | Santa Ana (SNA) → Denver (DEN) | 2 |
| 167 | Indianapolis (IND) → Denver (DEN) | 2 |
| 168 | Baltimore (BWI) → Denver (DEN) | 2 |
| 169 | St Louis (STL) → Chicago (MDW) | 2 |
| 170 | New Orleans (MSY) → Dallas (DAL) | 2 |
| 171 | Chicago (MDW) → Buffalo (BUF) | 2 |
| 172 | Baltimore (BWI) → West Palm Beach (PBI) | 2 |
| 173 | San Diego (SAN) → Austin (AUS) | 2 |
| 174 | Seattle (SEA) → San Jose (SJC) | 2 |
| 175 | Nashville (BNA) → Boston (BOS) | 2 |
| 176 | Las Vegas (LAS) → Burbank (BUR) | 2 |
| 177 | Oakland (OAK) → Palm Springs (PSP) | 2 |
| 178 | Boston (BOS) → Denver (DEN) | 2 |
| 179 | Orlando (MCO) → Chicago (ORD) | 2 |
| 180 | Austin (AUS) → El Paso (ELP) | 2 |
| 181 | Las Vegas (LAS) → Kansas City (MCI) | 2 |
| 182 | Indianapolis (IND) → Baltimore (BWI) | 2 |
| 183 | St Louis (STL) → Orlando (MCO) | 2 |
| 184 | New York (LGA) → Atlanta (ATL) | 2 |
| 185 | Oakland (OAK) → Spokane (GEG) | 2 |
| 186 | Providence (PVD) → Orlando (MCO) | 2 |
| 187 | Kansas City (MCI) → Denver (DEN) | 2 |
| 188 | El Paso (ELP) → San Diego (SAN) | 2 |
| 189 | Ontario (ONT) → Phoenix (PHX) | 2 |
| 190 | Milwaukee (MKE) → Orlando (MCO) | 2 |
| 191 | Sacramento (SMF) → Las Vegas (LAS) | 2 |
| 192 | New Orleans (MSY) → San Diego (SAN) | 2 |
| 193 | Baltimore (BWI) → Tampa (TPA) | 2 |
| 194 | Chicago (ORD) → Dallas (DAL) | 2 |
| 195 | Chicago (MDW) → Minneapolis (MSP) | 2 |
| 196 | Chicago (MDW) → Fort Lauderdale (FLL) | 2 |
| 197 | Baltimore (BWI) → Atlanta (ATL) | 2 |
| 198 | Chicago (MDW) → Philadelphia (PHL) | 2 |
| 199 | St Louis (STL) → Baltimore (BWI) | 2 |
| 200 | Phoenix (PHX) → Oklahoma City (OKC) | 2 |
| 201 | Reno (RNO) → San Jose (SJC) | 2 |
| 202 | San Jose (SJC) → Dallas (DAL) | 2 |
| 203 | Chicago (MDW) → Omaha (OMA) | 2 |
| 204 | Manchester (MHT) → Orlando (MCO) | 2 |
| 205 | Nashville (BNA) → Valparaiso (VPS) | 2 |
| 206 | Fort Myers (RSW) → Chicago (MDW) | 2 |
| 207 | Los Angeles (LAX) → San Francisco (SFO) | 2 |
| 208 | Phoenix (PHX) → Nashville (BNA) | 2 |
| 209 | San Jose (SJC) → Boise (BOI) | 2 |
| 210 | Baltimore (BWI) → New Orleans (MSY) | 2 |
| 211 | Denver (DEN) → Boston (BOS) | 2 |
| 212 | Chicago (MDW) → Columbus (CMH) | 2 |
| 213 | Chicago (MDW) → Las Vegas (LAS) | 2 |
| 214 | Miami (MIA) → Nashville (BNA) | 2 |
| 215 | Dallas (DAL) → San Jose (SJC) | 2 |
| 216 | San Jose (SJC) → Kahului (OGG) | 2 |
| 217 | Orlando (MCO) → Milwaukee (MKE) | 2 |
| 218 | Savannah (SAV) → Nashville (BNA) | 2 |
| 219 | Orlando (MCO) → Albany (ALB) | 2 |
| 220 | Savannah (SAV) → Chicago (MDW) | 2 |
| 221 | Kansas City (MCI) → Dallas (DAL) | 2 |
| 222 | San Antonio (SAT) → Las Vegas (LAS) | 2 |
| 223 | Las Vegas (LAS) → Salt Lake City (SLC) | 2 |
| 224 | Dallas (DAL) → Phoenix (PHX) | 2 |
| 225 | Las Vegas (LAS) → Sacramento (SMF) | 2 |
| 226 | Columbus (CMH) → Orlando (MCO) | 2 |
| 227 | San Antonio (SAT) → Houston (HOU) | 2 |
| 228 | Nashville (BNA) → Houston (HOU) | 2 |
| 229 | St Louis (STL) → New Orleans (MSY) | 2 |
| 230 | San Antonio (SAT) → Chicago (MDW) | 2 |
| 231 | Columbus (CMH) → Washington (DCA) | 2 |
| 232 | Manchester (MHT) → Tampa (TPA) | 2 |
| 233 | Fort Lauderdale (FLL) → Chicago (ORD) | 2 |
| 234 | Dallas (DAL) → Harlingen (HRL) | 2 |
| 235 | Oakland (OAK) → Ontario (ONT) | 2 |
| 236 | Tampa (TPA) → Baltimore (BWI) | 2 |
| 237 | Salt Lake City (SLC) → Phoenix (PHX) | 2 |
| 238 | Austin (AUS) → Sacramento (SMF) | 2 |
| 239 | San Diego (SAN) → Albuquerque (ABQ) | 2 |
| 240 | Nashville (BNA) → Fort Myers (RSW) | 2 |
| 241 | Cancún (CUN) → Austin (AUS) | 2 |
| 242 | Atlanta (ATL) → St Louis (STL) | 2 |
| 243 | Chicago (MDW) → Nashville (BNA) | 2 |
| 244 | Houston (HOU) → San Diego (SAN) | 2 |
| 245 | Milwaukee (MKE) → Phoenix (PHX) | 2 |
| 246 | Las Vegas (LAS) → Washington (DCA) | 2 |
| 247 | Orlando (MCO) → Atlanta (ATL) | 2 |
| 248 | Baltimore (BWI) → Punta Cana (PUJ) | 2 |
| 249 | Chicago (MDW) → Washington (DCA) | 2 |
| 250 | Seattle (SEA) → Phoenix (PHX) | 1 |
| 251 | Orlando (MCO) → Houston (HOU) | 1 |
| 252 | Montego Bay (MBJ) → Fort Lauderdale (FLL) | 1 |
| 253 | Sacramento (SMF) → St Louis (STL) | 1 |
| 254 | Baltimore (BWI) → Kansas City (MCI) | 1 |
| 255 | Burbank (BUR) → Salt Lake City (SLC) | 1 |
| 256 | Nashville (BNA) → Charlotte (CLT) | 1 |
| 257 | Nashville (BNA) → Denver (DEN) | 1 |
| 258 | New Orleans (MSY) → New York (LGA) | 1 |
| 259 | Eugene (EUG) → Oakland (OAK) | 1 |
| 260 | Las Vegas (LAS) → Santa Ana (SNA) | 1 |
| 261 | St Louis (STL) → Washington (DCA) | 1 |
| 262 | Miami (MIA) → Denver (DEN) | 1 |
| 263 | El Paso (ELP) → Houston (HOU) | 1 |
| 264 | Kansas City (MCI) → New York (LGA) | 1 |
| 265 | Dallas (DAL) → Chicago (ORD) | 1 |
| 266 | Kahului (OGG) → Los Angeles (LAX) | 1 |
| 267 | Columbus (CMH) → Fort Lauderdale (FLL) | 1 |
| 268 | San Antonio (SAT) → Denver (DEN) | 1 |
| 269 | Washington (DCA) → Houston (HOU) | 1 |
| 270 | Las Vegas (LAS) → Atlanta (ATL) | 1 |
| 271 | New York (LGA) → New Orleans (MSY) | 1 |
| 272 | St Louis (STL) → Oklahoma City (OKC) | 1 |
| 273 | Memphis (MEM) → Atlanta (ATL) | 1 |
| 274 | Los Angeles (LAX) → Denver (DEN) | 1 |
| 275 | Dallas (DAL) → New York (LGA) | 1 |
| 276 | Palm Springs (PSP) → San Jose (SJC) | 1 |
| 277 | Austin (AUS) → Houston (HOU) | 1 |
| 278 | Atlanta (ATL) → Chicago (MDW) | 1 |
| 279 | Austin (AUS) → Ontario (ONT) | 1 |
| 280 | St Louis (STL) → Jacksonville (JAX) | 1 |
| 281 | Oakland (OAK) → Long Beach (LGB) | 1 |
| 282 | Nashville (BNA) → Tampa (TPA) | 1 |
| 283 | Albuquerque (ABQ) → Oakland (OAK) | 1 |
| 284 | Raleigh/Durham (RDU) → Chicago (MDW) | 1 |
| 285 | Las Vegas (LAS) → San Diego (SAN) | 1 |
| 286 | Philadelphia (PHL) → Nashville (BNA) | 1 |
| 287 | Las Vegas (LAS) → Spokane (GEG) | 1 |
| 288 | Chicago (MDW) → Cleveland (CLE) | 1 |
| 289 | Boston (BOS) → Nashville (BNA) | 1 |
| 290 | Nashville (BNA) → Miami (MIA) | 1 |
| 291 | Nashville (BNA) → New Orleans (MSY) | 1 |
| 292 | Dallas (DAL) → Amarillo (AMA) | 1 |
| 293 | Baltimore (BWI) → Raleigh/Durham (RDU) | 1 |
| 294 | Oakland (OAK) → Bellingham (BLI) | 1 |
| 295 | Atlanta (ATL) → Orlando (MCO) | 1 |
| 296 | Chicago (MDW) → Rochester (ROC) | 1 |
| 297 | Denver (DEN) → Spokane (GEG) | 1 |
| 298 | Raleigh/Durham (RDU) → Dallas (DAL) | 1 |
| 299 | Tampa (TPA) → Chicago (ORD) | 1 |
| 300 | Hartford (BDL) → Tampa (TPA) | 1 |
Top 10 Southwest Airlines flights we tracked
| # | Flight | Route | Times seen |
|---|---|---|---|
| 1 | SWA300 | Hartford (BDL) → Chicago (MDW) | 5 |
| 2 | SWA1037 | Providence (PVD) → Baltimore (BWI) | 4 |
| 3 | SWA2298 | San Jose (SJC) → San Diego (SAN) | 4 |
| 4 | SWA2343 | San Jose (SJC) → Salt Lake City (SLC) | 4 |
| 5 | SWA314 | Nashville (BNA) → Baltimore (BWI) | 4 |
| 6 | SWA342 | Santa Ana (SNA) → San Jose (SJC) | 4 |
| 7 | SWA4676 | Fort Myers (RSW) → Minneapolis (MSP) | 4 |
| 8 | SWA1222 | Burbank (BUR) → Oakland (OAK) | 3 |
| 9 | SWA1240 | Oakland (OAK) → Denver (DEN) | 3 |
| 10 | SWA1327 | Orlando (MCO) → Providence (PVD) | 3 |
Frequently asked questions about Southwest Airlines
Where is my Southwest Airlines flight right now?
Search the flight number (WN plus digits) in the search box on this page. If the aircraft is airborne within receiver coverage, you will see its live status; before departure you will see the route.
Is my Southwest Airlines flight delayed or cancelled?
Check the flight number on this page for live status, but for rebooking, gate changes and cancellations the airline itself remains the authoritative source.
What do WN and SWA mean on Southwest Airlines flights?
They are two prefixes for the same airline. WN is the IATA code you see on tickets; SWA is the ICAO code used in flight plans and by air traffic control.
Does Southwest Airlines operate flights for other airlines?
Codeshare agreements mean a flight sold under another carrier's number may be operated by Southwest Airlines, and the reverse. Live tracking always follows the operating carrier's flight number; check the "operated by" line on your booking.
