FAA · Live

Open the map

Airlines · Southwest Airlines

Southwest Airlines fleet

Southwest Airlines reports 803 airframes in its 2025 US DOT Form 41 filing — 803 in service, 0 stored. Average age 10.9 yr. Range 0.6 yr to 24.3 yr.

Fleet as reported in the 2025 US DOT Form 41 filing · Registry & ages refreshed Jul 14, 2026

In the filing
803803 in service · 0 stored
Average age
10.9 yr
Types operated
4Largest: Boeing 737-700

By type

TypeCountAvg age
Boeing 737-70030318.0 yr
Boeing 737 MAX 83003.7 yr
Boeing 737-80019810.8 yr
Boeing 737214.6 yr

Where Southwest Airlines flies

US DOT T-100 · filed data

What Southwest Airlines actually flew — departures, seats, and passengers filed with the US DOT (T-100), a live complement to the fleet inventory above.

Departures

1,414,851

April 2026

Seats flown

227,989,355

Passengers

169,846,070

Load factor

74.5%

passengers ÷ seats

Busiest Southwest Airlines airports

Where Southwest Airlines operates the most departures — its hubs and focus cities.

  • DEN

    Denver

    90,076 departures · 14,802,036 seats flown

    6.4%

    Share

  • LAS

    Las Vegas

    86,154 departures · 14,013,204 seats flown

    6.1%

    Share

  • BWI

    Baltimore

    73,716 departures · 11,945,368 seats flown

    5.2%

    Share

  • PHX

    Phoenix

    68,925 departures · 11,166,693 seats flown

    4.9%

    Share

  • MDW

    Chicago

    68,772 departures · 11,264,798 seats flown

    4.9%

    Share

  • DAL

    Dallas

    68,105 departures · 10,976,077 seats flown

    4.8%

    Share

  • BNA

    Nashville

    59,916 departures · 9,718,778 seats flown

    4.2%

    Share

  • HOU

    Houston

    54,196 departures · 8,731,868 seats flown

    3.8%

    Share

Busiest Southwest Airlines routes

  • DAL–HOU

    8,080 departures · 822,608 passengers

    65.0%

    Load

  • DEN–PHX

    7,759 departures · 964,334 passengers

    75.9%

    Load

  • SAN–SMF

    7,574 departures · 933,810 passengers

    79.6%

    Load

  • SAN–SJC

    7,436 departures · 865,779 passengers

    75.6%

    Load

  • LAS–SAN

    7,387 departures · 892,439 passengers

    76.8%

    Load

  • BWI–MCO

    7,013 departures · 854,499 passengers

    74.4%

    Load

  • LAS–PHX

    6,899 departures · 760,618 passengers

    67.9%

    Load

  • LAS–SMF

    6,856 departures · 876,049 passengers

    78.8%

    Load

  • LAS–SJC

    6,509 departures · 777,540 passengers

    73.5%

    Load

  • LAS–OAK

    6,387 departures · 841,942 passengers

    81.0%

    Load

  • PHX–SAN

    6,322 departures · 723,906 passengers

    73.5%

    Load

  • BUR–LAS

    6,246 departures · 584,405 passengers

    66.3%

    Load

  • DEN–LAS

    6,235 departures · 786,224 passengers

    76.2%

    Load

  • LAS–RNO

    6,227 departures · 715,616 passengers

    72.8%

    Load

  • OAK–SAN

    5,988 departures · 689,071 passengers

    74.5%

    Load

What Southwest Airlines flies

Aircraft types by share of departures — what actually operated, not fleet count.

Monthly Southwest Airlines capacity

Monthly Southwest Airlines departures, trailing 12 months through April 2026. Bars scale to the busiest month.

  • May 2025

    122,329 departures · 15,092,756 passengers

    76.6%

    Load

  • June 2025

    125,588 departures · 15,638,323 passengers

    77.3%

    Load

  • July 2025

    128,440 departures · 15,940,625 passengers

    76.9%

    Load

  • August 2025

    116,589 departures · 14,504,298 passengers

    77.1%

    Load

  • September 2025

    111,953 departures · 13,776,100 passengers

    76.1%

    Load

  • October 2025

    123,595 departures · 15,581,965 passengers

    78.1%

    Load

  • November 2025

    115,093 departures · 13,426,329 passengers

    72.2%

    Load

  • December 2025

    120,374 departures · 14,352,955 passengers

    73.6%

    Load

  • January 2026

    103,858 departures · 11,236,312 passengers

    67.0%

    Load

  • February 2026

    102,322 departures · 11,572,644 passengers

    70.6%

    Load

  • March 2026

    124,265 departures · 14,800,397 passengers

    74.5%

    Load

  • April 2026

    120,445 departures · 13,923,366 passengers

    72.2%

    Load

Source: US DOT Bureau of Transportation Statistics, T-100 Segment. Data through April 2026. The DOT publishes roughly three months in arrears.

How old is the Southwest Airlines fleet?

Southwest Airlines — airframes by age (years)

Age is measured from each airframe's delivery date — the FAA airworthiness date where available, otherwise the manufacturer's. Bars share a fixed scale across every fleet page, so two carriers can be compared directly.

Oldest airframeN424WNBoeing 737-70024.3 yr · Delivered Apr 4, 2002
Newest airframeN8986QBoeing 737 MAX 80.6 yr · Delivered Dec 21, 2025

Airframes

Inventory: US DOT Form 41 Schedule B-43 (2025). Deliveries: Airbus & Boeing official reports. Registry status: FAA. Last refreshed Jul 14, 2026.