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Comparison

Southwest vs Delta Stock: Airline Comparison

By Visuwire · · 2 min read

Compare Southwest and Delta stock, route networks, business models, and which airline is the better investment.

Southwest vs Delta Overview

Southwest pioneered low-cost travel with point-to-point service while Delta operates as a premium network carrier with global reach. They represent different airline business models.

Company Comparison

MetricSouthwestDelta
Market Cap~$20B~$35B
Revenue (2025)~$28B~$60B
Fleet Size~800~1,300
Destinations~120~300+
Founded19671924

Business Model

Southwest

  • Low-cost carrier (LCC)
  • Point-to-point network
  • Single aircraft type (Boeing 737)
  • No first class or assigned seats
  • Free checked bags
  • Domestic focus

Delta

  • Legacy/network carrier
  • Hub-and-spoke network
  • Multiple aircraft types
  • Premium cabins
  • International partnerships
  • Diversified revenue

Fleet Comparison

FactorSouthwestDelta
Aircraft Types1 (737)15+
Average Age~12 years~15 years
AdvantageCost efficiencyFlexibility

Financial Comparison

MetricSouthwestDelta
Revenue~$28B~$60B
Operating Margin~10%~12%
Net Margin~7%~8%
Load Factor~84%~86%
CASM (ex-fuel)LowerHigher

Revenue Breakdown

Southwest

SourceRevenue %
Passenger~95%
Cargo/Other~5%

Delta

SourceRevenue %
Passenger~85%
Cargo~3%
Loyalty/Credit Card~8%
Other~4%

Route Network

FactorSouthwestDelta
Domestic Share~17%~18%
InternationalLimited (Caribbean, Mexico)Extensive
HubsNone (focus cities)ATL, MSP, DTW, SLC
Business TravelGrowingStrong

Loyalty Programs

ProgramSouthwestDelta
NameRapid RewardsSkyMiles
Credit Card RevenueGrowing~$7B+ annually
ValuationPart of companyCould separate

Valuation

MetricSouthwestDelta
P/E Ratio~12x~8x
P/S Ratio~0.7x~0.6x
EV/EBITDA~5x~4.5x
Dividend Yield~2%~1%

Both trade at low multiples typical for airlines.

Competitive Advantages

Southwest

  • Low-cost structure
  • Strong culture and service reputation
  • No change fees (industry first)
  • Simplicity (one aircraft type)
  • Strong balance sheet

Delta

  • Premium positioning
  • International network
  • Sky Club lounges
  • Refinery ownership (cost hedge)
  • Strongest brand among legacies

Challenges

ChallengeSouthwestDelta
Technology updateNeededOngoing
Labor costsRisingRising
CompetitionULCC pressureInternational competition
Fuel volatilityHighMedium (refinery)

Recent Developments

Southwest

  • Technology modernization after 2022 meltdown
  • Considering assigned seating
  • Premium economy product
  • Red-eye flights

Delta

  • Premium seat investment
  • International route expansion
  • Sustainability initiatives
  • Partner investments (LATAM, Korean Air)

Which Stock to Buy?

PreferenceChoose
Low-cost modelSouthwest
Premium carrierDelta
International exposureDelta
Simpler operationsSouthwest
Dividend consistencySouthwest
Lower valuationDelta

Both are quality airlines with different strengths in a challenging industry.

Stock data as of early 2026. This comparison is for informational purposes only and does not constitute investment advice.