What type of aircraft is N8555Z?

N8555Z is a Boeing 737-800 with 175 seats, according to the FAA aircraft register.

Which airline flies N8555Z?

Southwest Airlines (WN) flew N8555Z most recently, according to US Department of Transportation flight records for July 2026.

Where does N8555Z fly?

Its most frequent route in the last 12 months was St. Louis to Las Vegas (6 flights). It flew 1,749 flights in total, about 146 a month.

N8555Z was built in 2017, so it is 9 years old.

Is N8555Z usually on time?

76% 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

N8555Z

Boeing 737-800, Southwest Airlines

N8555Z is a Boeing 737-800 flown by Southwest Airlines, built in 2017. From August 2025 to July 2026 it flew 1,749 flights, most often St. Louis to Las Vegas, and 76% arrived within 15 minutes of schedule.

1,749

flights in 12 months

76%

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 N8555Z flies

St. Louis to Las VegasSTL to LAS6 flights
Dallas to PhoenixDAL to PHX5 flights
St. Louis to DenverSTL to DEN4 flights
Dallas to OrlandoDAL to MCO4 flights
Phoenix to ChicagoPHX to MDW4 flights
Boston to ChicagoBOS to MDW4 flights
Las Vegas to DallasLAS to DAL4 flights
Chicago to DenverMDW to DEN4 flights
Windsor Locks to BaltimoreBDL to BWI4 flights
Phoenix to Las VegasPHX to LAS3 flights

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

Month by month

Share of N8555Z 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	79%	0%	155
September 2025	86%	0.7%	141
October 2025	81%	0%	149
November 2025	87%	0.7%	150
December 2025	79%	0%	140
January 2026	74%	2%	99
February 2026	77%	0.7%	144
March 2026	68%	2.4%	123
April 2026	75%	0.6%	160
May 2026	67%	0.7%	148
June 2026	72%	0%	172
July 2026	68%	0.6%	168

Questions and answers

What type of aircraft is N8555Z?: N8555Z is a Boeing 737-800 with 175 seats, according to the FAA aircraft register.
Which airline flies N8555Z?: Southwest Airlines (WN) flew N8555Z most recently, according to US Department of Transportation flight records for July 2026.
Where does N8555Z fly?: Its most frequent route in the last 12 months was St. Louis to Las Vegas (6 flights). It flew 1,749 flights in total, about 146 a month.
How old is N8555Z?: N8555Z was built in 2017, so it is 9 years old.
Is N8555Z usually on time?: 76% 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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