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US aircraft · WN

N439WN

Boeing 737-7H4, Southwest Airlines

N439WN is a Boeing 737-7H4 flown by Southwest Airlines, built in 2003. From August 2025 to July 2026 it flew 1,880 flights, most often Miami to Baltimore, and 78% arrived within 15 minutes of schedule.

1,880
flights in 12 months
78%
on time (within 15 min)
15
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 N439WN flies

  1. Miami to Baltimore6 flights
  2. Baltimore to Manchester NH6 flights
  3. Santa Ana to San Jose6 flights
  4. Las Vegas to Santa Ana5 flights
  5. Denver to Phoenix4 flights
  6. Las Vegas to Houston4 flights
  7. New York to Nashville4 flights
  8. San Jose to Santa Ana4 flights
  9. San Diego to Sacramento4 flights
  10. Washington to Atlanta3 flights

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

Month by month

Share of N439WN flights arriving within 15 minutes of schedule, by month. Green is the best month, orange the worst.
See the figures
MonthOn timeCancelledFlights
August 202583%0%144
September 202583%0%141
October 202576%0%169
November 202584%1.9%159
December 202573%0%165
January 202684%0%128
February 202692%1.8%110
March 202668%1.7%175
April 202682%0%158
May 202675%0%175
June 202669%0.5%186
July 202673%0%170

Questions and answers

What type of aircraft is N439WN?
N439WN is a Boeing 737-7H4 with 143 seats, according to the FAA aircraft register.
Which airline flies N439WN?
Southwest Airlines (WN) flew N439WN most recently, according to US Department of Transportation flight records for July 2026.
Where does N439WN fly?
Its most frequent route in the last 12 months was Miami to Baltimore (6 flights). It flew 1,880 flights in total, about 157 a month.
How old is N439WN?
N439WN was built in 2003, so it is 23 years old.
Is N439WN 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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