US legacy carriers like Delta successfully neutralized low-cost threats (Spirit, Frontier) by introducing "Basic Economy" fares. Leveraging their scale and loyalty programs, they could price-discriminate, matching LCC prices on a fraction of their seats while maintaining premium pricing on the rest, effectively starving competitors of the price-sensitive traffic they relied on.

An oil refinery buys crude and sells refined products, hedging the "crack spread" between them. Similarly, an airline buys fuel and sells tickets. This mental model helps treasurers see they aren't just consumers but also producers with revenue to hedge.

Ryanair's success didn't just win market share; it fundamentally reshaped the entire European airline industry. Its model of unbundling every service to achieve the lowest base fare forced legacy carriers like British Airways to adopt similar 'low-cost tricks' to compete on short-haul routes. This has led to an industry-wide degradation of the passenger experience, where once-standard amenities are now paid add-ons.

By recognizing its revenue was correlated with oil prices, Qatar Airways could sell call options (covered by surcharges) and sell put options (covered by cheaper physical fuel if prices fell). This created a profitable range-bound strategy with no "naked" risk.

While airlines are massive consumers of fuel (a short position), their ability to raise ticket prices and surcharges when oil prices rise creates a correlated revenue stream. This effectively makes them "long oil" on the revenue side, enabling unique hedging strategies.

Beyond low fares, Ryanair's long-term dominance stems from its financial strategy of investing when the industry is weak. The airline uses its large cash reserves to place massive, discounted aircraft orders with manufacturers like Boeing during slumps and opportunistically seizes market share when legacy carriers falter. This turns competitors' crises into major growth opportunities.

To fix its core marketplace, Lyft executed a difficult maneuver: decreasing prices for riders while increasing pay for drivers. This seemingly impossible financial feat was funded by a massive reduction in corporate overhead, including laying off 26% of staff, to make the unit economics viable.

Hedging fuel costs is not a guaranteed win. If an airline locks in a price and the market drops, they are stuck with high costs. Meanwhile, unhedged competitors can buy cheaper fuel, undercut ticket prices, and steal market share, turning a risk tool into a liability.

Airlines have massive fixed costs and low variable costs, but the leverage is capped by the number of seats. This creates intense pressure to sell the last seat at any price, crushing industry-wide pricing power and creating a situation with big downside and limited upside.