United Airlines

United Airlines is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Airline Services
• Airline Support Services

North American Industry Classification System (NAICS) Categories:

• Scheduled Passenger Air Transportation > Airline Companies
• Scheduled Freight Air Transportation
• Other Support Activities For Air Transportation > Airports, Flying Fields & Services > Aircraft Support Services

Standard Industry Classification (SIC) Categories:

• Air Transportation, Scheduled > Airline Companies
• Airports, Flying, Fields, And Airport Terminal Services > Aircraft & Airline Support Services