June 29, 2013 was the last update for this page.
Over the past few years legacy airlines have increased capacity and revenue by contracting with regional type airlines operating primarily smaller jets [under 90 seats]. These "contracts" are known as "capacity purchase agreements".
In addition to capacity purchase agreements, American, Delta, US Airways and Alaska also own regional jet carriers.
Tables below provide the affiliate impact for the airlines covered by this website since year 2003. A summary of each airlines regional affiliation is provided below the table.
Graphs provide comparisons for selected metrics.
Note: If data is not available, that cell is left blank.
 Fleet includes owned and operated jets per SEC filings.
 Consolidated includes mainline and affiliate.
 Revenue is from Capacity Purchase Agreements and Contracted fees.
 Affiliate expense includes all known costs attributed to affiliates and owned subsidiaries.
 Excludes special and one time charges.
 Does not include props.