AERO vs DAL: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: AERO is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. AERO and DAL share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined AERO and DAL exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Grupo Aeromexico is Mexico's flag carrier and largest full-service airline, flying passengers and cargo across Mexico, the United States, South and Central America, the Caribbean, Canada, Europe, and Asia. It operates a fleet of roughly 166 aircraft (average age about 8.8 years as of March 2026), hubs primarily at Mexico City, and is a member of the SkyTeam alliance alongside Delta, which holds an equity stake. The company carried about 24.6 million passengers in 2025 at a system load factor near 86 percent, and returned to listed-equity status via a roughly $222.8 million IPO on the NYSE in November 2025 following its earlier Chapter 11 restructuring.

Full AERO guide

Delta Air Lines is a global network carrier headquartered in Atlanta, operating a hub-and-spoke system across domestic and international routes with major connecting points in Atlanta, Minneapolis, Detroit, Salt Lake City, and New York. Beyond passenger flying, Delta earns meaningful revenue from its co-branded credit card partnership with American Express, its SkyMiles loyalty program, cargo, and Delta TechOps, one of the largest aircraft maintenance, repair, and overhaul providers in the world. The company has leaned into premium seating (first class, Delta One, and Comfort+) as higher-income travelers have driven a larger share of demand.

Full DAL guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• AERO drivers: Cross-border and international demand; Post-restructuring balance sheet and fleet.
• DAL drivers: Premium and loyalty revenue mix; High-income traveler demand.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Airlines are cyclical, capital-intensive, and highly sensitive to jet fuel prices, labor costs, and the peso-to-dollar exchange rate, all of which pressured Q1 2026 net income down about 51 percent year over year to roughly $11 million despite higher revenue. For DAL, airlines are deeply cyclical and sensitive to the broader economy, so a slowdown in consumer or corporate travel can quickly pressure fares and load factors.

Pick AERO if you believe its drivers more; DAL if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the AERO and DAL guides.

AERO. AERO trades at a modest revenue multiple typical of airlines, reflecting thin and volatile net margins rather than a growth premium. FY2025 net income fell about 43 percent from the prior year and Q1 2026 net income dropped roughly 51 percent, so the earnings base is still normalizing after the restructuring. The ADSs have fallen well below their late-2025 IPO level, and sell-side price targets sit meaningfully above the recent price, signaling a wide range of views.

DAL. Delta trades at a relatively low trailing earnings multiple, consistent with how the market typically values cyclical airlines. The March 2026 quarter showed record adjusted revenue of ~$14.2 billion even as total operating expense rose on higher fuel and refinery costs. Figures are approximate and drawn from company releases and market data as of mid-2026.

Headline figures (approximate, JULY 2026): AERO shows revenue (ttm) ~$5.5B, fy2025 revenue ~$5.36B, fy2025 net income ~$352M, q1 2026 revenue ~$1.34B (+13% YoY); DAL shows revenue (fy2025) ~$63.4B, net income (fy2025) ~$3.8B, eps (fy2025) ~$5.82, market cap ~$61B.

AERO and DAL are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined AERO and DAL exposure against your real portfolio. It is not an investment adviser.