Global airlines are facing a dilemma as the oil price increases threaten travel demand. The industry's ability to remain profitable may depend on consumers pulling back on flying due to higher gasoline prices. The only solution is to reduce capacity, but the scale of this increase is too large. Replacing older, thirstier planes with more fuel-efficient models is an obvious solution, but a supply-chain shortage and issues with new-generation engines have delayed deliveries. The current oil shock is expected to widen the gap between financially strong and weaker airlines.