Delta Air Lines, Inc. (DAL) Cash Flow Statement

The OCF/NI ratio was below 1 in only two quarters (2026Q2 at 0.99 and 2025Q2 at 0.87), suggesting that reported earnings are typically well-backed by cash generation. The extreme ratio in 2024Q1 (65.08) reflects a near-breakeven net income of $37M against $2.4B operating cash flow, highlighting the impact of non-cash charges and working capital timing. This pattern implies that accruals are not systematically inflating earnings, but investors should monitor the quarters where OCF lags net income, as they may signal temporary working capital headwinds.

The FCF margin of 14.1% in 2026Q2 is the highest in the ten-quarter period, driven by a $1.6B operating cash flow and a $1.2B capex outflow (note the sign convention in the data). However, the prior quarter's FCF margin was only 7.8%, and 2024Q3 saw a negative FCF of -$54M, underscoring the lumpy nature of capital spending and working capital. This volatility suggests that Delta's cash generation is highly sensitive to seasonal demand and fuel costs, and the recent improvement may not be sustainable without continued revenue growth.

The capex-to-revenue ratio averaged around 7.5% across the period, with the highest reading in 2025Q1 at 8.7% and the lowest in 2026Q2 at 6.1%. This suggests that Delta is maintaining a steady pace of fleet and infrastructure investment, likely for both maintenance and growth purposes. The relatively stable ratio implies that capital expenditures are not expanding disproportionately to revenue, which may indicate disciplined capacity management. However, the absolute capex levels (around $1.2B per quarter) are substantial, and investors should assess whether these investments are generating adequate returns given the airline's cyclical earnings.

The data shows that working capital changes were only reported in the first two quarters of 2026, with a $1.2B positive contribution in 2026Q1 and a -$1.2B negative in 2026Q2. This suggests that Delta's cash flow is subject to significant timing effects, possibly from fuel hedging, ticket receivables, or payables management. The absence of working capital changes in prior quarters may indicate that the company's cash conversion cycle is relatively stable, but the recent volatility warrants attention. If working capital continues to swing, it could mask underlying operating cash flow trends, making it important to look at normalized cash generation.

Dividends have grown from $64M in 2024Q1 to $129M in 2026Q2, reflecting a gradual increase in shareholder returns, but the amounts are small relative to operating cash flow (typically under 10%). The absence of buybacks and acquisitions indicates that Delta is prioritizing debt reduction and fleet investment over aggressive capital returns. This conservative approach may be prudent given the airline's cyclicality and the need to maintain a strong balance sheet. However, investors seeking higher returns may view the lack of buybacks as a missed opportunity, especially when cash balances are robust.

The cumulative OCF of $20.4B versus net income of $9.6B results in a cumulative OCF/NI ratio of 2.1, suggesting that non-cash charges like depreciation and amortization (which totaled roughly $6.1B) are a significant bridge between earnings and cash flow. This divergence is typical for capital-intensive industries and implies that Delta's reported earnings understate its cash-generating ability. However, the gap also reflects the impact of working capital changes and other adjustments, so investors should not assume that the cash flow premium will persist indefinitely. The consistency of OCF exceeding net income in most quarters supports the quality of Delta's earnings.