What type of aircraft is N8637A?

N8637A is a Boeing 737-8H4 with 143 seats, according to the FAA aircraft register.

Which airline flies N8637A?

Southwest Airlines (WN) flew N8637A most recently, according to US Department of Transportation flight records for July 2026.

Where does N8637A fly?

Its most frequent route in the last 12 months was San Diego to Austin (5 flights). It flew 1,576 flights in total, about 143 a month.

N8637A was built in 2014, so it is 12 years old.

Is N8637A usually on time?

71% 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

N8637A

Boeing 737-8H4, Southwest Airlines

N8637A is a Boeing 737-8H4 flown by Southwest Airlines, built in 2014. From August 2025 to July 2026 it flew 1,576 flights, most often San Diego to Austin, and 71% arrived within 15 minutes of schedule.

1,576

flights in 12 months

71%

on time (within 15 min)

airports

12 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 N8637A flies

San Diego to AustinSAN to AUS5 flights
Austin to PhoenixAUS to PHX5 flights
Orlando to DallasMCO to DAL4 flights
San Diego to Las VegasSAN to LAS4 flights
Austin to ChicagoAUS to MDW4 flights
Sacramento to PhoenixSMF to PHX4 flights
Phoenix to Las VegasPHX to LAS4 flights
Phoenix to ChicagoPHX to MDW4 flights
Dallas to WashingtonDAL to DCA4 flights
Phoenix to HoustonPHX to HOU4 flights

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

Month by month

Share of N8637A 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%	158
September 2025	72%	1.3%	150
October 2025	73%	0%	155
November 2025	83%	2.7%	147
December 2025	79%	0%	155
January 2026	87%	0%	86
February 2026	81%	0.8%	128
March 2026	65%	1.4%	142
May 2026	48%	2%	102
June 2026	62%	0%	180
July 2026	62%	0.6%	173

Questions and answers

What type of aircraft is N8637A?: N8637A is a Boeing 737-8H4 with 143 seats, according to the FAA aircraft register.
Which airline flies N8637A?: Southwest Airlines (WN) flew N8637A most recently, according to US Department of Transportation flight records for July 2026.
Where does N8637A fly?: Its most frequent route in the last 12 months was San Diego to Austin (5 flights). It flew 1,576 flights in total, about 143 a month.
How old is N8637A?: N8637A was built in 2014, so it is 12 years old.
Is N8637A usually on time?: 71% 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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