Founded
1967
Fleet Size
770 aircraft
Destinations
121+
Main Hubs
DAL, MDW, HOU
About Southwest Airlines
Southwest Airlines is a major low-cost carrier in the United States, known for its no-frills, no-seat-assignment model and generous baggage policy. It is the world's largest low-cost carrier by number of passengers carried domestically.
Hub Airports
DAL
Hub Airport
MDW
Hub Airport
HOU
Hub Airport
BWI
Hub Airport
LAS
Hub Airport
PHX
Hub Airport
Key Facts
IATA CodeWN
ICAO CodeSWA
CountryUnited States
RegionNorth America
HeadquartersDallas, Texas
Year Founded1967
Fleet Size770 aircraft
Destinations Served121+ worldwide
AllianceIndependent
Official Websitesouthwest.com
Policies & Information
Carry-on Bag
Pieces allowed1
Max weightNo weight limit
Max size56 × 36 × 23 cm
FeeFree
Personal Item
AllowedYes
Max sizeAny size that fits under seat
Checked — Economy
Pieces2
Weight23 kg (50 lb) each
FeeFirst 2 bags FREE — always
Checked — Business
Pieces2
Weight23 kg (50 lb) each
FeeFree
Overweight / Oversize
Overweight fee$75 per bag (23–32 kg)
Oversize fee$75 per bag if over 158 cm
Note: Southwest's '2 Free Bags' policy is unique in the U.S. airline industry. Bags 3 and beyond cost $75 each.
Quick Policy Snapshot
Carry-on feeFree
1st checked bagFirst 2 bags FREE — always
Change fee$0 — no change fees ever
24-hr cancellationYes
Name changes No
Online check-in24 hours before departure
Primary Hubs
DAL
MDW
HOU
BWI
LAS
PHX