Delta Airlines and Comcast — When "Cheap" Meets "Debt"

Found Delta Airlines and Comcast on investing.com's list of undervalued stocks to close out March. Both are names most people recognize. Both have taken significant hits to their stock prices. Both show attractive valuations on the surface.

Dig deeper, and the same question emerges for both: are you comfortable with the debt?

Delta Airlines: The Premium Pivot

Delta's market cap sits at $41.5 billion. They operate roughly 1,300 aircraft connecting the U.S. and destinations worldwide.

The strategic shift toward premium travel is what makes this interesting. International first and business class — high-income travelers tend to keep spending on experiences even when the broader economy weakens.

Their SkyMiles loyalty program generates revenue from credit card spending even when nobody's flying. The company projects 20% earnings growth in 2026 and is aggressively paying down debt.

Numbers

Metric	Value
Market Cap	$41.5B
FCF (TTM)	$3.8B
FCF (5yr avg)	$1.6B
Price/FCF	10.8x
P/E	8.3x
10yr Net Margin	4%
5yr Net Margin	5.5%
TTM Net Margin	8%

Net income running significantly above FCF is worth noting — potentially a red flag. The 5-year average FCF of $1.6 billion against a $41.5B market cap translates to over 25x. The trailing year looks better at 10.8x, but consistency matters.

Margins are improving. 10-year at 4%, trending to 8% now. But airlines have always been difficult businesses.

Valuation

Using 2/4/6% revenue growth, 4/6/8% margins, 13/16/19 terminal P/E, and a 9% required return:

Scenario	Fair Value
Conservative	$50
Mid-range	$100
Optimistic	$170

At $63, the mid-range case explains why analysts are bullish.

The Catch

Airlines are cyclical. When recessions hit, business travel drops and leisure travel follows. Heavy debt plus declining revenue is a dangerous combination.

One surprising data point: during the 2008 financial crisis, Delta's revenue actually increased. From $17.5B in 2006 to $28B in 2009. Not from acquisitions — oil prices crashed from $145, likely lowering ticket prices while maintaining demand.

Past exceptions don't guarantee future performance. Personally, the only airline worth deep analysis is Southwest — 48 consecutive profitable years before COVID, no bankruptcies, proper fuel hedging, single aircraft type.

Comcast: The Boring Giant

Comcast might be the least exciting name on this list. And that's exactly what makes it interesting. Most investors chase excitement. Boring and overlooked is where real opportunities often hide.

Think of it as three businesses:

Internet & Cable (Xfinity): One of America's largest broadband providers. Millions of households pay monthly. Reliable recurring revenue that doesn't disappear when markets get volatile.
NBCUniversal: NBC, Bravo, USA Network, and Peacock streaming.
Universal Theme Parks: Orlando, Hollywood, Osaka, Beijing. Competing directly with Disney, with growing attendance and revenue.

The stock is down 45% over five years. The honest reason: cable TV is structurally shrinking as people cut the cord.

Numbers

Metric	Value
Market Cap	$105B
Enterprise Value	$270B
Net Debt	$170B
FCF	$19B
Price/FCF (market cap)	5.5x
EV/FCF	14x
Dividend Yield	4.67%
Interest Expense	$4.4-4.5B

5.5x FCF on market cap is striking. But on enterprise value, it's 14x. The entire difference is debt.

With $170B in net debt and $4.4-4.5B in annual interest expense, the current average rate is around 3%. If that debt refinances at 5%, interest jumps to $8.5B. That $3.5-4B increase, at a 20x P/E, would vaporize $70-80B in market cap.

The dividend is attractive — 4.67% yield using just $5B of the $19B in FCF. Share buybacks are aggressive too — at 5.5x FCF, buying back shares creates meaningful shareholder value.

Cable Decline vs. Broadband Durability

People cancel cable packages instantly. They don't cancel home internet nearly as easily. That distinction matters enormously.

Peacock is growing. Theme parks are performing well. This is a more diversified business than most people recognize.

Valuation

Using -2/0/2% revenue growth, 10.5/11.5/12.5% FCF margins, 8/10/12 terminal P/E, and a 9% required return — even conservative assumptions produce significant implied upside. That's how cheap the stock looks on a market-cap basis.

But $140B in long-term debt. When it refinances, the math changes. That's the central question for this investment.

The Common Thread

Both Delta and Comcast look undervalued on the surface. Both face the same fundamental question about debt.

When a heavily indebted company sees revenue decline during a downturn, interest payments don't shrink with it. That gap can destroy businesses.

Cheap price and real value are different things. "Price is what you pay. Value is what you get." Factor debt levels into every valuation — what looks like 5x earnings might really be 14x when you account for what the company actually owes.

FAQ

Q: Comcast at 5.5x FCF looks incredibly cheap. Why isn't everyone buying? A: Because 5.5x is the market cap divided by FCF. Once you account for $170 billion in net debt, the enterprise-level multiple is 14x — still reasonable, but nowhere near "screaming buy" territory. The debt is the elephant in the room. Interest rate risk on refinancing is the single biggest variable.

Q: Are airlines investable given their cyclical nature? A: They can be, but the margin of safety needs to be much larger. Airlines face fuel cost volatility, economic cycles, and intense competition. The key metrics to watch are debt levels, FCF consistency over full economic cycles, and whether management hedges fuel exposure. A cheap airline with heavy debt in a recession can go to zero — bankruptcy history in the sector proves this.