Domestically Delta works to earn a revenue premium by leveraging its two advantages: non-union mechanics and front line employees. Delta’s TechOps drive an on-time operation less likely to cancel flights, and acts as a profit center doing maintenance for other carriers. Delta customer service is generally friendlier than competitors. However the U.S. market is mature and domestic aviation is not a growth business.
Delta owns stakes in Aeromexico, China Eastern, Gol, Air France KLM and Virgin Atlantic. These investments both help Delta align the interests of those carriers with their own, and diversify their exposure beyond the U.S. market.