Southwest Airlines stock has delivered a 42.8% gain over the past three years, yet current valuation checks send a mixed message, with an intrinsic value estimate from a Discounted Cash Flow (DCF) model pointing to meaningful upside while market multiples look closer to fair.

• Over three years, a 42.8% total return suggests investors have already priced in a fair amount of optimism about Southwest Airlines.
• Recent earnings momentum and efforts to broaden revenue streams can support the cash flow outlook, while rising and volatile fuel costs remain a key risk for how much of that revenue ultimately turns into profit.
• On Simply Wall St's broader checks, Southwest Airlines scores 3 out of 6. This points to a mixed picture rather than a clear bargain or clear overvaluation.

The issue now is whether Southwest Airlines' current share price still leaves enough gap to the intrinsic value suggested by the Discounted Cash Flow (DCF) work to interest investors after the recent multi year gains.

Does Southwest Airlines Look Undervalued on Cash Flow?

The Discounted Cash Flow (DCF) approach here takes Southwest Airlines' projected cash flows and discounts them back to today using a 2 stage Free Cash Flow to Equity model.

Southwest Airlines currently shows latest twelve month free cash flow of about $225.2 million outflow. The model assumes recovering cash flows over time and arrives at an estimated intrinsic value of about $86.65 per share. Against the current share price, that implies the stock trades at roughly a 48.0% discount to this cash flow based estimate and screens as materially undervalued on this measure.

Southwest Airlines' recent Q2 update, where earnings guidance was trimmed because of rising fuel costs, helps explain why the market remains cautious even as the DCF output points to a higher value supported by projected future cash generation.

Overall, the Discounted Cash Flow analysis indicates Southwest Airlines stock appears undervalued relative to the cash flows analysts expect it to produce.

Our Discounted Cash Flow (DCF) analysis suggests Southwest Airlines is undervalued by 48.0%. Track this in your watchlist or portfolio, or discover 49 more high quality undervalued stocks.

Does Southwest Airlines Look Fairly Valued on Earnings?

The P/E ratio is a useful way to think about what you are paying for each dollar of Southwest Airlines earnings. Southwest Airlines currently trades on a P/E of about 26.3x, which sits well above the broader airlines industry average of roughly 9.3x and also above the peer group average of about 10.7x. On simple comparisons, that puts a clear premium on Southwest Airlines relative to many listed airline stocks.

However, a more tailored fair P/E ratio for Southwest Airlines, which factors in its size, business mix, profitability profile and risk, sits at around 28.6x. Against that benchmark, the current 26.3x multiple is a little lower, suggesting the stock lines up reasonably with what this framework would expect rather than screening as obviously cheap or expensive.

Overall, Southwest Airlines appears priced roughly in line with what the P/E framework suggests is fair.

The Southwest Airlines Narrative: What Would Justify Today's Price?

Simply Wall St Narratives for Southwest Airlines pick up where the valuation checks leave off. They spell out which combinations of future growth, margins and earnings would need to hold for the stock to be worth materially more or less than today’s price. They also frame each scenario as a thesis about Southwest Airlines' business that investors can revisit over time, rather than a single valuation snapshot.

The community is split on Southwest Airlines, with one camp focusing on transformation upside and the other fixated on execution and cost risk.

Bull case: 5% undervalued

"Planned introduction of premium and assigned seating, along with basic economy offerings, can enhance revenue yield through differentiated pricing strategies catering to varied consumer preferences, thereby potentially boosting net margins and overall earnings..."

Bear case: 35% overvalued

"The company's sole reliance on the Boeing 737 family exposes Southwest to ongoing operational risk and supply chain vulnerability, as any disruption, certification delay, or safety crisis at Boeing could materially impact capacity, growth plans, and revenue realization for multiple years..."

Do you think there's more to the story for Southwest Airlines? Head over to our Community to see what others are saying!

The Bottom Line

For Southwest Airlines, the Discounted Cash Flow (DCF) work points to a sizeable intrinsic value gap, while the current P/E suggests the stock is priced roughly in line with what comparable earnings frameworks imply. That split comes down to whether future cash flows eventually justify a richer valuation, even if sentiment and peer comparisons already look fair. With broader checks sending a mixed signal, the key question from here is whether Southwest Airlines can convert its revenue plans into durable, fuel-resilient margins, rather than allowing today’s discount to reflect ongoing cost and execution risk.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.