Boeing vs. Space Exploration Technologies: Which Flight Giant Is a Better Buy in 2026?

The aerospace market is evolving as legacy giants face off against disruptive newcomers. Choosing between The Boeing Co (NYSE:BA) and Space Exploration Technologies Corp (NASDAQ:SPCX) requires balancing established manufacturing scale against rapid technological innovation.

Boeing remains a pillar of global travel and national security, while Space Exploration Technologies, commonly known as SpaceX, focuses on reusable rockets and satellite internet. Investors often compare these two because they represent different eras of the defense stocks industry. One offers a recovery play, while the other represents a high-growth bet on the future of connectivity.

The case for Boeing

Boeing develops, manufactures, and services commercial airplanes, defense products, and space systems for customers in more than 150 countries. The company derives a significant portion of its revenue from a limited number of commercial airline customers and the U.S. government. Customer concentration like this adds a layer of risk to the business, particularly given that sales to non-U.S. customers accounted for 46% of total revenue in 2025.

In FY 2025, revenue reached nearly $90 billion, representing a robust growth of approximately 35% compared to the prior year. This helped the company achieve net income of roughly $2.2 billion, a significant improvement from the heavy losses recorded in 2024. The net margin, which measures the percentage of revenue kept as profit, sat at approximately 2.5% for the period.

As of its December 2025 balance sheet, the company carries a debt-to-equity ratio of 10x. This metric compares total debt to shareholder equity, indicating that Boeing relies heavily on borrowed funds to finance its operations. The so-called current ratio, which measures the ability to pay short-term obligations with short-term assets, was nearly 1.2x. Free cash flow was negative $1.9 billion, and you should note that stock-based compensation (SBC) represented roughly 40% of operating cash flow, which inflates reported cash generation since SBC is a non-cash expense added back in the cash flow statement.

The case for Space Exploration Technologies

SpaceX designs, manufactures, and operates rockets and spacecraft, but its Starlink broadband system is becoming a massive part of its business. By early 2026, Starlink served approximately 10.3 million subscribers across more than 160 markets. The company generates revenue from launch services for satellite operators and government agencies, alongside consumer and enterprise connectivity subscriptions.

In FY 2025, revenue reached roughly $18.7 billion, which was an increase of about 33% year over year. Despite this growth, the company reported a net loss of nearly $5 billion for the fiscal year. This resulted in a negative net margin of approximately 26%, reflecting the high costs associated with launching satellites and expanding its global ground infrastructure.

As of the December 2025 balance sheet, the debt-to-equity ratio was approximately 0.6x. This suggests a more conservative use of debt relative to equity compared to many industrial peers. The current ratio stood at roughly 1.4x, indicating a healthy liquidity position for meeting near-term obligations. Free cash flow was negative $14 billion due to heavy capital spending, and stock-based compensation represented roughly 29% of operating cash flow, which also inflates reported cash generation.

Risk profile comparison

Boeing faces significant risks in meeting development and certification schedules for new aircraft like the 777X and specific 737 derivatives. Following past safety incidents, the company is under increased oversight from the FAA, and any further quality control issues could impact production rates. Additionally, Boeing relies on a large unionized workforce and thousands of suppliers, making it vulnerable to labor strikes and supply chain instability. Its reliance on fixed-price contracts for defense work also poses a risk if production costs exceed initial estimates.

SpaceX operates in a highly capital-intensive industry where a single launch failure can result in significant financial and reputational damage. The company faces intense competition from established players like Lockheed Martin Corp (NYSE:LMT) and Northrop Grumman Corp (NYSE:NOC) in the defense and launch sectors. Furthermore, the Starlink segment depends on continuous regulatory approvals from various global governments and faces potential technical challenges related to orbital debris. Since the company is still scaling, its high rate of cash burn remains a primary concern for long-term sustainability.

Valuation comparison

Boeing appears more attractively valued on a price-to-sales basis, while SpaceX commands a significant premium due to its disruptive growth potential and satellite internet expansion.

Valuation metrics sourced from Financial Modeling Prep (FMP) and may differ from other data providers.

Which stock would I buy in 2026?

SpaceX's various businesses intend to leverage the company's core launch capabilities, starting with reusable rockets. The ability to reuse boosters significantly lowers per-launch costs and spreads fixed manufacturing costs across multiple missions. Expectations are that scaling up quickly will happen, with Wall Street analysts projecting $39 billion in sales for fiscal 2026, a much lower net loss of around $1.6 billion, and profitability in 2027.

The lack of free cash flow appears to be crushing; projections indicate free cash flow will be negative $28 billion this year, then jump to negative $67 billion in 2027.

Still, the success of Tesla Inc (NASDAQ:TSLA) has made founder Elon Musk the richest man in the world and raised expectations that he can make an even greater fortune from SpaceX. The business certainly has market support behind it, raising the world's largest IPO, $85.7 billion this year.

Space has a very real business in Starlink, which mitigates the possibility that grander plans won't come to fruition.

Boeing, meanwhile, is still working to recover from safety and supply chain issues. While revenue will rise about 9% to $97.7 billion this year, the company's net income will fall dramatically to around $85 million, according to consensus Wall Street analyst forecasts, hence its very high forward P/E ratio.

But don't count Boeing out. It is among the largest aerospace and defense companies, giving it excellent long-term prospects due to its leading position in the growing commercial aerospace industry. In the first quarter of its current fiscal year, the order backlog rose in the double digits, setting a new record. Backlogs mean future sales are strong and show the industry believes in the business.

SpaceX's very high P/S ratio is a stiff premium to pay for a business that actually has competitors in every facet of its business, be that mobile communications, space launches, or other space infrastructure services. Boeing is far less sexy but employs nearly ten times as many Americans as SpaceX. That makes Boeing as close to too big to fail as any business, as does its unique position in the U.S. aerospace business. It's a contrarian view to say Boeing is the better buy, but at its low P/S ratio, it appears to be a long-term better bet.

Brendan Coffey has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Boeing, Lockheed Martin, and Tesla. The Motley Fool has a disclosure policy.