Flights are already getting more expensive after a jet fuel spike. When should you book?

Jet fuel has risen more than 60% since the Feb. 28 U.S.–Israel attacks on Iran, trading around $3.78/gal (Platts), pushing costs for a Boeing 737-800’s tanks from ~$17,000 on Feb. 27 to >$27,000 on March 5 and about $23,000 after a recent oil pullback. Carriers are already passing costs to customers (e.g., Cathay doubling fuel surcharges March 18) and analysts (UBS, Jefferies) expect near-term earnings pressure—1Q EPS hit described as “almost certain”—with upside or offset dependent on sustained travel demand and fuel price duration.

Analysis

The immediate shock to jet fuel acts like a negative supply shock to airline unit economics that is being absorbed unevenly across business models: premium/full-service carriers with strong corporate and international demand can pass-through and cut marginal off-peak flying within 1-3 months, while low-cost carriers and airlines with large near-term fuel exposure (little hedging) will see margin compression and may be forced into deeper ancillary monetization or route pruning. Routing frictions (airspace closures, longer routings) create durable per-flight fuel penalties on long-haul sectors that are not symmetrical — expect widebody international CASM to diverge from narrowbody domestic CASM by mid-Q2 as re-routings persist and schedule recovery lags demand normalization. Supply-side dynamics also create second-order winners: regional franchise partners and wet-lease providers face higher per-block-hour costs that will be borne by network carriers if contract renegotiations are feasible; conversely, OEM delivery deferrals (voluntary or forced) temporarily limit capacity growth, supporting unit revenues if demand holds. The largest catalyst to reverse the current pain is geopolitically driven reopening of major chokepoints or an SPR/producer coordinated response within 2-8 weeks; absent that, expect sustained volatility and a 1-2 quarter earnings hit concentrated in carriers with negative per-ticker exposures (notably UAL and LUV).

Key Decisions for Investors

• Pair trade (3-6 months): Long DAL (buy shares) / Short UAL (borrow shares) — thesis: DAL benefits from higher-yield corporate demand and better ability to protect margins; UAL has greater near-term fuel exposure and international re-routing costs. Target entry: DAL at current levels, UAL short funded by proceeds; upside: 20-30% if spreads in unit revenue widen; max risk: symmetric to positions (use 1.5% portfolio notional).
• Hedge/option (2-4 months): Buy UAL 3-month put spread (sell higher strike) to cap cost of insurance on a Q1 earnings miss — cheapens premium vs naked puts while capturing downside from a 10-25% EPS shock. Position size: 0.5-1.0% portfolio; expected payoff 3-5x if UAL declines sharply on fuel-driven revisions.
• Directional trade (1-3 months): Short LUV small-cap exposure via options or stock — Southwest vulnerability from stopped hedging makes it a high-beta play on jet fuel; use stop-loss tight given volatility. Risk/Reward: high short gamma; cap exposure to 0.5% notional and use weekly options to express view.
• Event play (30-90 days): Buy calls on premium international carriers that can rapidly re-price (e.g., DAL calls or investment in carriers with strong corporate mix) ahead of JP Morgan Industrials Conference commentary; if management signals sustained pricing power, take profits into a 15-25% move. Keep options tenor 3 months to capture near-term rerate.