What type of aircraft is N8577Z?

N8577Z is a Boeing 737-800 with 175 seats, according to the FAA aircraft register.

Which airline flies N8577Z?

Southwest Airlines (WN) flew N8577Z most recently, according to US Department of Transportation flight records for July 2026.

Where does N8577Z fly?

Its most frequent route in the last 12 months was Phoenix to Denver (5 flights). It flew 1,795 flights in total, about 150 a month.

N8577Z was built in 2018, so it is 8 years old.

Is N8577Z 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

N8577Z

Boeing 737-800, Southwest Airlines

N8577Z is a Boeing 737-800 flown by Southwest Airlines, built in 2018. From August 2025 to July 2026 it flew 1,795 flights, most often Phoenix to Denver, and 77% arrived within 15 minutes of schedule.

1,795

flights in 12 months

77%

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 N8577Z flies

Phoenix to DenverPHX to DEN5 flights
Las Vegas to DenverLAS to DEN5 flights
Austin to NashvilleAUS to BNA4 flights
Dallas to San AntonioDAL to SAT4 flights
Orlando to San JuanMCO to SJU4 flights
Indianapolis to PhoenixIND to PHX3 flights
Houston to NashvilleHOU to BNA3 flights
Sacramento to Las VegasSMF to LAS3 flights
Baltimore to DallasBWI to DAL3 flights
Sacramento to DallasSMF to DAL2 flights

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

Month by month

Share of N8577Z 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	87%	0%	156
September 2025	86%	0%	146
October 2025	83%	0%	151
November 2025	83%	0%	98
December 2025	81%	0%	152
January 2026	77%	5.7%	141
February 2026	84%	0%	121
March 2026	76%	2.4%	166
April 2026	63%	1.3%	152
May 2026	73%	1.2%	171
June 2026	54%	2.4%	164
July 2026	81%	0.6%	177

Questions and answers

What type of aircraft is N8577Z?: N8577Z is a Boeing 737-800 with 175 seats, according to the FAA aircraft register.
Which airline flies N8577Z?: Southwest Airlines (WN) flew N8577Z most recently, according to US Department of Transportation flight records for July 2026.
Where does N8577Z fly?: Its most frequent route in the last 12 months was Phoenix to Denver (5 flights). It flew 1,795 flights in total, about 150 a month.
How old is N8577Z?: N8577Z was built in 2018, so it is 8 years old.
Is N8577Z 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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