Boeing vs. Lockheed Martin: Which Aerospace Stock Is a Better Buy in 2026?

Boeing’s FY 2025 revenue rose 34.5% to about $89.5B and swung to $2.2B in net income from an $11.8B loss, but free cash flow was negative $1.9B and operational, supply-chain and balance-sheet risks persist. Lockheed Martin generated $75.1B in revenue, nearly $5.0B in net income and $6.9B in free cash flow; the article cites its lower forward P/E of 16.9x versus Boeing’s 52.2x and names Lockheed the better buy for 2026. Forecasts cited include Lockheed revenue growth of 8% to $81B and net income rising 40% to more than $7B, versus Boeing revenue growth of 9% to $97.7B but net income of about $85M.

Analysis

The key distinction is cash conversion, not reported revenue growth. For Boeing (BA), delivery growth that fails to turn into sustained free cash flow would leave the equity exposed to execution setbacks and its already high leverage; a larger backlog alone does not solve that. Any production slippage can also give Airbus (AIR) room to capture orders, though Airbus’s ability to realize those gains depends on its own capacity and supplier constraints. For Lockheed Martin (LMT), dependable cash generation is attractive, but concentration in the F-35 makes the stock vulnerable to procurement changes, technical issues, or contract economics; a long program horizon is not the same as guaranteed revenue or margin.

Treat the article’s valuation comparison cautiously: BA’s cited forward P/E appears highly sensitive to an unusually low earnings estimate, so it is not a reliable standalone signal without checking estimate definitions and revisions. The article also mixes company-reported results with forecasts; verify periods and GAAP versus adjusted measures before trading on the figures.

Over days, expect sentiment to follow delivery, certification, and estimate revisions. Over 1–3 months, the decisive test is whether BA converts deliveries into cash and whether LMT’s outlook survives budget and program updates. Over 6–18 months, persistent BA cash burn favors Airbus competitively; improving BA cash conversion would challenge that view. Contrarian point: LMT’s apparent valuation advantage may be real, but the article understates program concentration and overstates what backlog proves about near-term cash.

Key Decisions for Investors

• Prefer a modest, beta-adjusted long LMT / short BA relative-value position only after confirming comparable forward earnings definitions and current estimate revisions; do not size it from the quoted P/Es alone.
• For BA, wait for evidence in quarterly free cash flow, delivery execution, and certification milestones before adding turnaround exposure. Reassess if cash conversion improves for consecutive quarters; cut the thesis if delivery or certification delays persist and cash burn worsens.
• For LMT, monitor F-35 production and contract updates alongside U.S. budget decisions. Reduce exposure if procurement or program economics weaken materially; do not treat the long procurement horizon as protection from those risks.
• Track Airbus capacity and order capture as a second-order read-through on BA execution; gains for AIR are conditional, not an automatic consequence of Boeing delays.