What type of aircraft is N8543Z?

N8543Z is a Boeing 737-800 with 175 seats, according to the FAA aircraft register.

Which airline flies N8543Z?

Southwest Airlines (WN) flew N8543Z most recently, according to US Department of Transportation flight records for July 2026.

Where does N8543Z fly?

Its most frequent route in the last 12 months was Las Vegas to St. Louis (4 flights). It flew 1,512 flights in total, about 126 a month.

N8543Z was built in 2017, so it is 9 years old.

Is N8543Z usually on time?

77% of its flights from August 2025 to July 2026 arrived within 15 minutes of schedule. Punctuality depends far more on the route and the airline's day than on the aircraft itself.

US aircraft · WN

N8543Z

Boeing 737-800, Southwest Airlines

N8543Z is a Boeing 737-800 flown by Southwest Airlines, built in 2017. From August 2025 to July 2026 it flew 1,512 flights, most often Las Vegas to St. Louis, and 77% arrived within 15 minutes of schedule.

1,512

flights in 12 months

77%

on time (within 15 min)

airports

9 yr

age

August 2025 to July 2026. Flights from US Bureau of Transportation Statistics on-time records (public domain); aircraft details from the FAA aircraft register.

Where N8543Z flies

Las Vegas to St. LouisLAS to STL4 flights
San Antonio to DallasSAT to DAL3 flights
Nashville to Fort LauderdaleBNA to FLL3 flights
Baltimore to Manchester NHBWI to MHT3 flights
Los Angeles to DenverLAX to DEN3 flights
Minneapolis to DenverMSP to DEN3 flights
Dallas to St. LouisDAL to STL3 flights
Tampa to PhoenixTPA to PHX3 flights
Denver to Salt Lake CityDEN to SLC3 flights
Los Angeles to PhoenixLAX to PHX3 flights

Its most frequent routes over the period. Each links to that route's punctuality page.

Month by month

Share of N8543Z flights arriving within 15 minutes of schedule, by month. Green is the best month, orange the worst.

See the figures

Month	On time	Cancelled	Flights
August 2025	74%	0%	148
September 2025	85%	0%	151
October 2025	80%	0.6%	154
November 2025	80%	1.3%	152
December 2025	71%	0%	157
January 2026	86%	4.2%	144
February 2026	88%	0%	92
March 2026	73%	2%	147
April 2026	75%	0%	130
May 2026	100%	0%	7
June 2026	69%	0%	51
July 2026	66%	0.6%	179

Questions and answers

What type of aircraft is N8543Z?: N8543Z is a Boeing 737-800 with 175 seats, according to the FAA aircraft register.
Which airline flies N8543Z?: Southwest Airlines (WN) flew N8543Z most recently, according to US Department of Transportation flight records for July 2026.
Where does N8543Z fly?: Its most frequent route in the last 12 months was Las Vegas to St. Louis (4 flights). It flew 1,512 flights in total, about 126 a month.
How old is N8543Z?: N8543Z was built in 2017, so it is 9 years old.
Is N8543Z usually on time?: 77% of its flights from August 2025 to July 2026 arrived within 15 minutes of schedule. Punctuality depends far more on the route and the airline's day than on the aircraft itself.

See how Southwest Airlines compares with every other US airline.

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