What type of aircraft is N8581Z?

N8581Z is a Boeing 737-800 with 175 seats, according to the FAA aircraft register.

Which airline flies N8581Z?

Southwest Airlines (WN) flew N8581Z most recently, according to US Department of Transportation flight records for July 2026.

Where does N8581Z fly?

Its most frequent route in the last 12 months was Chicago to Phoenix (6 flights). It flew 1,856 flights in total, about 155 a month.

N8581Z was built in 2018, so it is 8 years old.

Is N8581Z usually on time?

78% 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

N8581Z

Boeing 737-800, Southwest Airlines

N8581Z is a Boeing 737-800 flown by Southwest Airlines, built in 2018. From August 2025 to July 2026 it flew 1,856 flights, most often Chicago to Phoenix, and 78% arrived within 15 minutes of schedule.

1,856

flights in 12 months

78%

on time (within 15 min)

airports

8 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 N8581Z flies

Chicago to PhoenixMDW to PHX6 flights
Phoenix to BaltimorePHX to BWI4 flights
St. Louis to PhoenixSTL to PHX4 flights
Reno to Las VegasRNO to LAS4 flights
Nashville to TampaBNA to TPA4 flights
Dallas to PhoenixDAL to PHX4 flights
Milwaukee to DenverMKE to DEN3 flights
Los Angeles to Las VegasLAX to LAS3 flights
Las Vegas to RenoLAS to RNO3 flights
Nashville to New YorkBNA to LGA3 flights

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

Month by month

Share of N8581Z 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	75%	1.4%	148
September 2025	90%	0%	144
October 2025	76%	0.6%	161
November 2025	82%	2.5%	157
December 2025	66%	0.7%	146
January 2026	89%	0.7%	151
February 2026	88%	3.6%	138
March 2026	80%	0%	160
April 2026	74%	1.3%	160
May 2026	72%	0%	154
June 2026	67%	0.6%	167
July 2026	77%	1.2%	170

Questions and answers

What type of aircraft is N8581Z?: N8581Z is a Boeing 737-800 with 175 seats, according to the FAA aircraft register.
Which airline flies N8581Z?: Southwest Airlines (WN) flew N8581Z most recently, according to US Department of Transportation flight records for July 2026.
Where does N8581Z fly?: Its most frequent route in the last 12 months was Chicago to Phoenix (6 flights). It flew 1,856 flights in total, about 155 a month.
How old is N8581Z?: N8581Z was built in 2018, so it is 8 years old.
Is N8581Z usually on time?: 78% 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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