Southwest Airlines stock gains on interline deal and Q2 profit

Southwest Airlines stock (ISIN US8447411088) is trading at 38.36 USD as of September 2, 2026, giving the Dallas based carrier a market capitalization of 18.77 billion USD according to market data from Yahoo Finance.

On the same date, the airline is in focus after reporting second quarter fiscal 2026 earnings of 233 million USD on revenue of 8.43 billion USD and securing a new interline partnership with LOT Polish Airlines, as reported by AirlineGeeks on September 1, 2026.

The combination of a profitable quarter, updated full year earnings guidance in the range of 3.25 to 4.25 USD per share, and a strategic network move in Europe is setting the tone for investors looking at Southwest Airlines stock.

Q2 2026 profit and guidance adjustments

According to the earnings overview on Yahoo Finance, Southwest Airlines generated revenue of 8.43 billion USD and earnings of 233 million USD in the second quarter of fiscal 2026, corresponding to a profit margin of 2.76 percent for that period.

The same data set shows that diluted earnings per share in Q2 FY26 came in at 0.94 USD, compared with an earlier analyst estimate of 0.52 USD per share, meaning Southwest beat expectations by 0.42 USD per share in that quarter.

In its updated outlook referenced in the Yahoo Scout summary on September 2, 2026, the company is guiding for full year adjusted earnings per share between 3.25 and 4.25 USD, a range that reflects the impact of rising fuel costs and operational adjustments while still implying a substantial increase versus the trailing twelve month earnings per share of 1.60 USD.

This guidance range suggests that if Southwest reaches the midpoint of 3.75 USD, adjusted earnings per share would more than double compared with the current trailing figure, highlighting management's confidence in recovering profitability despite cost headwinds.

Stock performance and valuation metrics

As of September 2, 2026, Southwest Airlines stock is quoted at 38.36 USD on the New York Stock Exchange, up 1.79 percent on the day, with a 52 week trading range between 29.26 USD and 55.11 USD based on the same Yahoo Finance quote page.

At the current price and market capitalization of 18.77 billion USD, the stock is trading at a trailing price to earnings ratio of 23.98 and reflects a one year total return of 21.19 percent versus 19.17 percent for the S and P 500 index over the same period, according to the performance overview published by Yahoo Finance as of September 2, 2026.

The stock's 52 week range shows that the present level of 38.36 USD is closer to the lower end of 29.26 USD than to the 55.11 USD high, indicating that despite the double digit one year return, Southwest Airlines stock remains well below its recent peak, a detail that may be relevant for investors comparing the current valuation with past trading levels.

In addition, the trailing twelve month revenue is listed at 30.07 billion USD and net income attributable to common shareholders at 837 million USD, leading to a trailing profit margin of 2.78 percent and a return on equity of 11.10 percent, figures that frame the current valuation metrics in the broader context of the airline's profitability through the last four quarters.

Interline deal with LOT expands international reach

On September 1, 2026, aviation outlet AirlineGeeks reported that Southwest Airlines and LOT Polish Airlines have established an interline partnership, allowing passengers to book itineraries that combine flights of both carriers on a single ticket.

The article states that the interline arrangement took effect on that date and designates Los Angeles, Miami and San Francisco as the initial gateway airports in the United States for these connections between Southwest and LOT networks.

For Southwest, which has historically focused on domestic and near international routes within the Americas, such an interline agreement offers a relatively capital light way to give its customers access to additional destinations in Central and Eastern Europe via LOT's hub at Warsaw, potentially strengthening the appeal of its loyalty program without the immediate need for long haul aircraft investment.

From an investor perspective, the interline partnership does not immediately add revenue figures in the way a merger or equity alliance would, but it can support unit revenue and customer retention over time if it leads to higher load factors on Southwest feeder flights into the gateway cities and incremental revenue sharing with LOT on through tickets.

Dividend and capital structure indicators

According to the dividend information on the Yahoo Finance profile for Southwest Airlines as of September 2, 2026, the company has declared a forward annual dividend of 0.72 USD per share, corresponding to a dividend yield of 1.91 percent at the current price level of 38.36 USD.

The same data indicates an upcoming cash dividend of 0.18 USD per share with an ex dividend date of September 3, 2026, meaning investors who hold Southwest Airlines stock at the close of trading on September 2, 2026, are eligible to receive this quarterly payout.

On the balance sheet side, Yahoo Finance lists total cash at 3.79 billion USD and a total debt to equity ratio of 97.28 percent on a most recent quarter basis, while levered free cash flow over the trailing twelve months stands at negative 834.75 million USD, signaling that the airline continues to balance investment and shareholder returns against a still meaningful debt load.

This combination of resumed dividends, moderate leverage and negative levered free cash flow underlines that, while Southwest has regained profitability, capital allocation in the face of fuel price volatility and fleet investments remains a key variable for future earnings and payout stability.

Southwest business model and customer offering

Southwest Airlines operates primarily as a low fare, point to point carrier within the United States and selected near international markets, using a single fleet type of Boeing 737 aircraft to keep operating and maintenance costs down, as summarized in the company overview on Yahoo Finance, which notes 803 aircraft in service and 117 destinations served as of December 31, 2025.

The carrier has broadened its product in early 2026 by introducing cabin rows with extra legroom, assigned seating and an expanded fare family structure that includes a basic economy option, allowing it to appear more directly in online travel agency search results and better segment price sensitive versus schedule driven demand.

Beyond base fares, Southwest generates ancillary revenue from services such as upgraded boarding, EarlyBird Check In, in flight purchases, and transportation of pets and unaccompanied minors, which can support margins in an environment where base ticket prices are heavily influenced by fuel costs and competitive capacity.

Southwest Airlines stock and investor takeaway

With Southwest Airlines stock at 38.36 USD as of September 2, 2026, and a 52 week range of 29.26 to 55.11 USD, investors see a share price that has delivered a 21.19 percent one year total return but still trades significantly below its recent high, suggesting room for further recovery if the company can execute on its earnings guidance and cost control plans.

At the same time, the updated adjusted earnings guidance of 3.25 to 4.25 USD per share for the current fiscal year, the modest dividend yield of 1.91 percent and the interline partnership with LOT Polish Airlines collectively frame the risk reward profile: Southwest is profitable again, is investing in its network and product, but remains exposed to fuel price swings and broader market volatility.

Key data on Southwest Airlines

• Company: Southwest Airlines Co.
• ISIN: US8447411088
• Ticker: LUV
• Trading venue: NYSE
• Price (as of September 2, 2026, 09:45): 38.36 USD
• Market capitalization: 18.77 billion USD (as of September 2, 2026)
• Sector / Industry: Industrials / Airlines
• Index membership: S and P 500
• Next earnings date: October 21, 2026