Southwest Airlines 737-700

WN

Narrow-body jet

Fleet as reported in the 2025 annual filing · Registry & ages refreshed Sep 1, 2026

Busiest US routes for Southwest Airlines 737-700, by departures: BUR–LAS, BUR–OAK, BUR–SMF, SJC–SNA, DAL–HOU, LAS–SNA, SAN–SJC, BUR–SJC, SAN–SMF, PHX–SNA, BUR–PHX, SMF–SNA, OAK–SNA, LAS–SAN, PHX–SANBURSNASANLASSMFSJCPHXOAKDAL
Southwest Airlines's busiest 737-700 routes, by departures — line weight is departures flown, dots are the airports it connects. Great-circle paths from US DOT T-100, trailing 12 months through May 2026.
Passengers flown a year
61.5M
1st-largest Southwest Airlines sub-fleet
Airframes in the filing
303
Airports served
113
Countries
11
Departures a day
1,580
Average age
18.1 yr

How Southwest Airlines flies its 737-700

Filed traffic data

The count above is the 737-700 airframes Southwest Airlines owns (US DOT Form 41). This is how it actually flew them to 113 airports across 11 countries — the capacity and busiest routes filed with US DOT T-100 over the trailing 12 months.

Departures flown

576,812

May 2026

Seats flown

81,239,752

Passengers

61.5M

Load factor

77.9%

RPM ÷ ASM

Block hours

1,076,733

Southwest Airlines's busiest 737-700 routes

Its busiest 737-700 routes over the trailing 12 months, by departures.

All Southwest Airlines 737-700 destinations →

The longest and shortest Southwest Airlines 737-700 flights

The two ends of the type's working envelope, from the routes it actually flew — not what the airframe is certified to do.

Longest route flown

2,335 mi

Baltimore – Seattle (BWI–SEA)

5h 46m block · 65 departures · 93% load

Flown by Southwest Airlines. A long leg for a narrow-body twin — far enough from a diversion airport that the type carries an ETOPS rating.

Shortest route flown

73 mi

Colorado Springs – Denver (COS–DEN)

43m block · 1,228 departures · 78% load

Flown by Southwest Airlines. About 43m of block time, most of it connecting traffic feeding the hub.

Source: US DOT Bureau of Transportation Statistics, T-100 Segment. Data through May 2026.

Where Southwest Airlines flies the 737-700 from

Southwest Airlines flies its 737-700 from 113 US airports in 11 countries. The busiest, by departures:

  • LAS

    Las Vegas

    31,428 departures · 64 routes

    5.5%

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  • BWI

    Baltimore

    27,772 departures · 63 routes

    4.9%

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  • DEN

    Denver

    27,761 departures · 78 routes

    4.9%

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  • DAL

    Dallas

    27,023 departures · 60 routes

    4.8%

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  • PHX

    Phoenix

    26,355 departures · 54 routes

    4.6%

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  • MDW

    Chicago

    22,641 departures · 74 routes

    4.0%

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  • BNA

    Nashville

    22,514 departures · 69 routes

    4.0%

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  • HOU

    Houston

    21,954 departures · 61 routes

    3.9%

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  • MCO

    Orlando

    17,578 departures · 56 routes

    3.1%

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  • BUR

    Burbank

    17,413 departures · 18 routes

    3.1%

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Browse all airports →

Where the 737-700 sits in Southwest Airlines's fleet

The 737-700 is 40.9% of Southwest Airlines's 858 tracked mainline aircraft.

Share of Southwest Airlines's mainline fleet · each type a slice

Other Southwest Airlines types

How old is the Southwest Airlines 737-700 fleet?

Southwest Airlines 737-700 — 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 737-70024.4 yr · Delivered Apr 4, 2002
Newest airframeN7889ABoeing 737-7007.8 yr · Delivered Dec 10, 2018

See all 303 737-700 tail numbers in Southwest Airlines's fleet →

Monthly Southwest Airlines 737-700 capacity

54.2K
54.5K
49.4K
46.9K
52.3K
48K
49.2K
39.1K
40K
49.3K
46.9K
47.2K
JunJulAugSepOctNovDecJanFebMarAprMay
Monthly Southwest Airlines 737-700 departures across US routes, trailing 12 months through May 2026. Peak month in solid ink.

Frequently asked

How many 737-700 does Southwest Airlines have?

Southwest Airlines operates about 303 737-700 aircraft — 303 in service and 0 stored in its latest US DOT fleet filing.

Where does Southwest Airlines fly the 737-700?

Southwest Airlines flies its 737-700 to about 113 US airports across 11 countries, its busiest route being BUR–LAS.

How old are Southwest Airlines's 737-700?

Southwest Airlines's 737-700 fleet averages about 18.1 yr, ranging from 7.8 yr to 24.4 yr.

What is the longest 737-700 route Southwest Airlines flies?

The longest 737-700 route Southwest Airlines flew over the trailing 12 months is BWI–SEA, about 2,335 miles.

Inventory: US DOT Form 41 Schedule B-43 (2025). Deliveries: Airbus & Boeing official reports. Registry status: FAA. Last refreshed Sep 1, 2026.