(Bloomberg) — US airline stocks are heading for the worst two-week losing streak since October as volatile fuel prices and the mounting troubles at Boeing Co. tear through the industry, spurring concerns about aircraft delivery delays.
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A benchmark of the sector has tumbled more than 5% over the period, the biggest drop for the group in four months. Glum outlook from Southwest Airlines Co. sent shares spiraling roughly 18% this week, the stock’s the poorest showing in almost four years. That performance is weighing on the gauge of carriers in the S&P 1500 Composite which has fallen about 21% from July’s 52-week closing high.
Southwest was among a swath of major carriers previewing first quarter results ahead of an industry conference on Tuesday, but commentary surrounding capacity reductions and cost challenges dominated the conversation. Southwest outlined plans to cut routes and pull back on hiring for…


