Southwest Airlines (LUV) traded higher after a broad risk-on tape in which oil prices declined amid fresh signs of potential de-escalation in the U.S.-Iran conflict. For airlines, a pullback in crude typically translates into expectations for lower jet-fuel expense, and fuel is one of the sector’s biggest variable costs—so even modest oil moves can quickly shift earnings sentiment.

Fuel-cost anxiety has been a key swing factor for airline equities in 2026, with the Middle East conflict repeatedly jolting energy markets and jet-fuel supply expectations. With Southwest’s cost base highly sensitive to fuel, any perceived improvement in the forward fuel backdrop can drive a relief bid in LUV, especially after recent episodes of elevated volatility tied to Hormuz-related headlines.

The oil-driven tailwind lands shortly after Southwest’s first-quarter 2026 report, where the carrier posted net income of $227 million (EPS of $0.45) and emphasized “meaningful margin expansion” tied to its ongoing business transformation. Management also highlighted early results from its assigned and extra-legroom seating rollout, pointing to increased customer buy-up—an important support for the bull case if fuel remains unstable.