Siegel stated that Delta Airlines has $2 billion more in fuel expenses due to high oil prices, and past bookings were based on oil at $60, not current levels of $80-$100. High oil prices increase Delta's operating costs, which will squeeze earnings unless fares are raised, but fare hikes may not fully offset costs given past bookings. This creates near-term earnings risk and makes Delta unattractive, warranting an AVOID stance. If oil prices fall substantially or Delta successfully raises fares without reducing demand, the earnings pressure could ease.