#SWA3878
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ICAO: #AC729C
Owner: #SOUTHWESTAIRLINES
Flt: #SWA3878 #N9008 #B38M #STL-#PHX
Time: 2026-09-28 22:03:46 CDT
Min Alt: 26000 ft
Min Dist: 71.91 nm (152deg SSE)
Squawk: #2174
#adsb #planefence by kx1t sdr-e adsbexchange flightaware faa
September 29, 2026 at 3:27 AM
abovestlouis.com
🇺🇸 N8508W - Boeing 737NG 800/W - Southwest Airlines SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.7 mi away @ 9425 ft, heading WSW at 326 mph. Spotted 120x before. [10:01:01 PM CDT] #ABAADD #N8508W #B738 #SOUTHWEST #SWA3878 #WN3878 #TakingOff #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
September 22, 2026 at 3:01 AM
abovestlouis.com
🇺🇸 N8754S - Boeing 737MAX 8 - Southwest Airlines SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.6 mi away @ 12500 ft, heading WNW at 408 mph. Spotted 78x before. [09:41:10 PM CDT] #AC0BDE #N8754S #B38M #SOUTHWEST #SWA3878 #WN3878 #Landing #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
September 19, 2026 at 2:41 AM
abovestlouis.com
🇺🇸 N8934Q - Boeing 737MAX 8 - Southwest Airlines SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.5 mi away @ 7600 ft, heading SW at 317 mph. Spotted 57x before. [10:09:48 PM CDT] #AC536C #N8934Q #B38M #SOUTHWEST #SWA3878 #WN3878 #TakingOff #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
September 5, 2026 at 3:10 AM
abovestlouis.com
🇺🇸 N8890Q - Boeing 737MAX 8 - Southwest Airlines SWA3878/WN3878 - 4.4 mi away @ 8900 ft, heading SW at 327 mph. Spotted 72x before. [08:50:15 PM CDT] #AC41AB #N8890Q #B38M #SOUTHWEST #SWA3878 #WN3878 #TakingOff #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
September 1, 2026 at 1:50 AM
abovestlouis.com
🇺🇸 N9012J - SOUTHWEST AIRLINES CO. SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.4 mi away @ 8725 ft, heading WSW at 339 mph. Spotted 4x before. [09:32:28 PM CDT] #AC758A #N9012J #B38M #SWA3878 #WN3878 #TakingOff #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
August 29, 2026 at 2:32 AM
abovestlouis.com
🇺🇸 N8941Q - BOEING 737-8 - Southwest Airlines SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.4 mi away @ 8675 ft, heading WSW at 325 mph. Spotted 42x before. [09:42:57 PM CDT] #AC56BA #N8941Q #B38M #SOUTHWEST #SWA3878 #WN3878 #TakingOff #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
August 27, 2026 at 2:43 AM
abovestlouis.com
🇺🇸 N8890Q - Boeing 737MAX 8 - Southwest Airlines SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.5 mi away @ 7550 ft, heading WSW at 313 mph. Spotted 71x before. [09:53:45 PM CDT] #AC41AB #N8890Q #B38M #SOUTHWEST #SWA3878 #WN3878 #TakingOff #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
August 24, 2026 at 2:53 AM
abovestlouis.com
🇺🇸 N8988S - SOUTHWEST AIRLINES CO SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.5 mi away @ 9200 ft, heading WSW at 328 mph. Spotted 14x before. [10:19:37 PM CDT] #AC668D #N8988S #B38M #SWA3878 #WN3878 #TakingOff #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
August 22, 2026 at 3:19 AM
abovestlouis.com
🇺🇸 N1805U - Boeing 737MAX 8 - Southwest Airlines SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.3 mi away @ 7650 ft, heading SW at 336 mph. Spotted 82x before. [09:34:09 PM CDT] #A143C6 #N1805U #B38M #SOUTHWEST #SWA3878 #WN3878 #TakingOff #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
August 21, 2026 at 2:34 AM
abovestlouis.com
🇺🇸 N8825Q - Boeing 737MAX 8 - Southwest Airlines SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.4 mi away @ 7075 ft, heading SW at 322 mph. Spotted 102x before. [09:00:31 PM CDT] #AC2859 #N8825Q #B38M #SOUTHWEST #SWA3878 #WN3878 #TakingOff #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
August 19, 2026 at 2:00 AM
abovestlouis.com
🇺🇸 N8834L - Boeing 737MAX 8 - Southwest Airlines SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.3 mi away @ 6175 ft, heading SW at 332 mph. Spotted 82x before. [09:58:51 PM CDT] #AC2BE9 #N8834L #B38M #SOUTHWEST #SWA3878 #WN3878 #Landing #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
August 18, 2026 at 2:59 AM
abovestlouis.com
🇺🇸 N8609A - Boeing 737NG 8H4/W - Southwest Airlines SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.2 mi away @ 7350 ft, heading SW at 319 mph. Spotted 110x before. [10:15:13 PM CDT] #ABD26B #N8609A #B738 #SOUTHWEST #SWA3878 #WN3878 #TakingOff #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
August 13, 2026 at 3:15 AM
abovestlouis.com
🇺🇸 N8512U - Boeing 737NG 800/W - Southwest Airlines SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.6 mi away @ 9125 ft, heading WSW at 330 mph. Spotted 132x before. [09:19:53 PM CDT] #ABADC0 #N8512U #B738 #SOUTHWEST #SWA3878 #WN3878 #TakingOff #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
August 12, 2026 at 2:20 AM
abovestlouis.com
🇺🇸 N8717M - Boeing 737MAX 8 - Southwest Airlines SWA3878/WN3878 - 3.4 mi away @ 10200 ft, heading SW at 340 mph. Spotted 81x before. [12:28:58 AM CDT] #ABFD66 #N8717M #B38M #SOUTHWEST #SWA3878 #WN3878 #TakingOff #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
August 8, 2026 at 5:29 AM
abovestlouis.com
🇺🇸 N7825A - Boeing 737NG 7CT/W - Southwest Airlines SWA3878/WN3878, St Louis Lambert (STL) to Phoenix Sky Harbor (PHX) - 3.4 mi away @ 15350 ft, heading WNW at 431 mph. Spotted 81x before. [10:14:45 PM CDT] #AA9AFC #N7825A #B737 #SOUTHWEST #SWA3878 #WN3878 #Departure #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
August 7, 2026 at 3:14 AM