What type of aircraft is N7831B?

N7831B is a Boeing 737-7CT with 149 seats, according to the FAA aircraft register.

Which airline flies N7831B?

Southwest Airlines (WN) flew N7831B most recently, according to US Department of Transportation flight records for July 2026.

Where does N7831B fly?

Its most frequent route in the last 12 months was Sacramento to Burbank (7 flights). It flew 1,780 flights in total, about 148 a month.

N7831B was built in 2003, so it is 23 years old.

Is N7831B usually on time?

83% 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

N7831B

Boeing 737-7CT, Southwest Airlines

N7831B is a Boeing 737-7CT flown by Southwest Airlines, built in 2003. From August 2025 to July 2026 it flew 1,780 flights, most often Sacramento to Burbank, and 83% arrived within 15 minutes of schedule.

1,780

flights in 12 months

83%

on time (within 15 min)

airports

23 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 N7831B flies

Sacramento to BurbankSMF to BUR7 flights
Burbank to Las VegasBUR to LAS7 flights
Sacramento to San DiegoSMF to SAN6 flights
Las Vegas to Santa AnaLAS to SNA5 flights
Fort Lauderdale to BaltimoreFLL to BWI4 flights
Denver to AlbuquerqueDEN to ABQ4 flights
New Orleans to NashvilleMSY to BNA4 flights
Pittsburgh to BaltimorePIT to BWI4 flights
San Diego to San JoseSAN to SJC4 flights
San Jose to San DiegoSJC to SAN4 flights

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

Month by month

Share of N7831B 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	92%	0%	141
September 2025	78%	0%	23
October 2025	84%	0.6%	180
November 2025	75%	1.8%	164
December 2025	76%	3%	165
January 2026	91%	0%	147
February 2026	87%	5.7%	141
March 2026	84%	0%	171
April 2026	88%	1.2%	166
May 2026	81%	4%	126
June 2026	78%	1.2%	167
July 2026	76%	1.1%	189

Questions and answers

What type of aircraft is N7831B?: N7831B is a Boeing 737-7CT with 149 seats, according to the FAA aircraft register.
Which airline flies N7831B?: Southwest Airlines (WN) flew N7831B most recently, according to US Department of Transportation flight records for July 2026.
Where does N7831B fly?: Its most frequent route in the last 12 months was Sacramento to Burbank (7 flights). It flew 1,780 flights in total, about 148 a month.
How old is N7831B?: N7831B was built in 2003, so it is 23 years old.
Is N7831B usually on time?: 83% 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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