China’s top airlines cautious on outlook as Iran war raises fuel costs

All three Chinese state carriers returned to Q4 2025 losses (China Southern -1.3bn CNY, China Eastern -3.7bn CNY, Air China -3.64bn CNY) as aggressive capacity expansion and competition pushed fares down. A more-than-doubling in jet fuel prices since the Iran war has elevated fuel to ~35-38% of operating costs and threatens the industry’s profitability; China Eastern held 500,000 barrels of jet fuel hedges and estimates a 5% fuel move would swing profit by 2.2bn CNY. Analysts (HSBC) expect deeper losses in 2026 with a return to profit in 2027, while international passenger traffic rose 15-22.7% in 2025 and carriers continue to take COMAC C919 deliveries (2026 forecasts: China Southern 13, China Eastern 10, Air China 10).

Analysis

The hit to profitability is not just a function of higher fuel prices; it magnifies network and fleet decisions already driven by high-speed rail and domestic overcapacity. Airlines that pivot capacity toward international routes will raise unit revenue volatility because those routes are both more fuel-sensitive and constrained by bilateral traffic rights, which compresses the ability to quickly reprice or redeploy aircraft without incurring idle-aircraft or wet-lease costs.

Fleet composition and supply-chain dynamics are the underappreciated transmission mechanisms here. Rapid COMAC narrow‑body deliveries will exert downward pressure on short‑term lease rates for Western narrowbodies and shift maintenance demand toward domestic MRO providers — lowering some unit costs but increasing operational risk (dispatch reliability, spare pools) during the technology-transfer phase, which can widen CASM volatility over a 12–36 month horizon.

Macro/revenue levers matter more than raw capacity: fuel‑surcharge mechanics that lag market moves and aggressive price cuts to defend share create a fragile equilibrium where modest fuel normalization (3–6 months) can restore margins quickly, but prolonged elevation forces structural network pruning. Watch jet‑fuel crack spreads, HSR utilization rates, and bilateral traffic relaxations as the fastest, high‑signal catalysts that will either compress or re‑inflate downside risk over the next 3–12 months.

Key Decisions for Investors

• Pair trade (3–6 months): Short JETS (U.S. Airlines ETF) 0.7x notional / Long BNO (Brent ETF) 1.0x notional. Rationale: airlines decouple from crude; if jet fuel stays elevated this pair targets a 20–40% relative move. Risk management: initial stop for short JETS at +15% vs entry, take-profit at -25%; capped downside via long Brent exposure.
• Directional commodity hedge (1–3 months): Buy BNO 3‑month $X/$Y call spread (where X ≈ current spot, Y ≈ 15–20% OTM). Rationale: asymmetric pay-off to monetize sustained jet‑fuel/backwardation risk. Risk/reward: limited premium paid (100% downside of premium) vs 3–4x upside if Brent stays elevated.
• Idiosyncratic short (6–12 months): Short ZNH (China Southern ADR) or buy deep‑in‑the‑money puts with 9–12 month expiry. Rationale: highest exposure to domestic short‑haul displacement and pricing pressure during prolonged fuel stress. Risk control: size to 2–4% of book, tighten stops at +30% of option premium.
• Macro hedge with equity long (6–12 months): Buy MS (Morgan Stanley) 6–12 month 5–10% OTM call spread to express improving trading/advisory revenues from volatility and cross‑border travel rebound. Rationale: banks usually benefit asymmetrically from higher commodities/trading volumes. Risk/reward: limited premium outlay; target 2–4x return if regional travel normalization and M&A activity pick up.