What type of aircraft is N7857B?

N7857B is a Boeing 737-79P with 149 seats, according to the FAA aircraft register.

Which airline flies N7857B?

Southwest Airlines (WN) flew N7857B most recently, according to US Department of Transportation flight records for July 2026.

Where does N7857B fly?

Its most frequent route in the last 12 months was Oakland to Burbank (7 flights). It flew 1,933 flights in total, about 161 a month.

N7857B was built in 2005, so it is 21 years old.

Is N7857B 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

N7857B

Boeing 737-79P, Southwest Airlines

N7857B is a Boeing 737-79P flown by Southwest Airlines, built in 2005. From August 2025 to July 2026 it flew 1,933 flights, most often Oakland to Burbank, and 78% arrived within 15 minutes of schedule.

1,933

flights in 12 months

78%

on time (within 15 min)

airports

21 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 N7857B flies

Oakland to BurbankOAK to BUR7 flights
Dallas to TulsaDAL to TUL6 flights
Burbank to OaklandBUR to OAK5 flights
Las Vegas to Santa AnaLAS to SNA5 flights
Baltimore to BostonBWI to BOS5 flights
Nashville to AlbanyBNA to ALB4 flights
Phoenix to Santa AnaPHX to SNA4 flights
Santa Ana to PhoenixSNA to PHX4 flights
Santa Ana to OaklandSNA to OAK4 flights
Las Vegas to RenoLAS to RNO4 flights

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

Month by month

Share of N7857B 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	78%	0.6%	158
September 2025	81%	0%	160
October 2025	82%	0%	184
November 2025	77%	2.5%	157
December 2025	79%	1.3%	158
January 2026	84%	6.8%	117
February 2026	77%	2.9%	136
March 2026	74%	1.1%	176
April 2026	80%	0%	167
May 2026	77%	1.2%	169
June 2026	70%	0%	183
July 2026	74%	1.2%	168

Questions and answers

What type of aircraft is N7857B?: N7857B is a Boeing 737-79P with 149 seats, according to the FAA aircraft register.
Which airline flies N7857B?: Southwest Airlines (WN) flew N7857B most recently, according to US Department of Transportation flight records for July 2026.
Where does N7857B fly?: Its most frequent route in the last 12 months was Oakland to Burbank (7 flights). It flew 1,933 flights in total, about 161 a month.
How old is N7857B?: N7857B was built in 2005, so it is 21 years old.
Is N7857B 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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