Significant events in the histories of Delta and Northwest:
— 1929: Delta starts its first passenger flights over a route from Dallas to Jackson, Miss.
— 1926: Col. Lewis Brittin founds Northwest Airways to carry air mail from the Twin Cities to Chicago with two rented biplanes. It flies its first ticketed passengers the next year.
— 1947: Northwest becomes the first commercial airline to fly from the U.S. to Japan.
— 1972: Northeast Airlines merges with Delta.
— 1986: Northwest acquires Republic Airlines, nearly doubling its work force.
— 1987: Delta merges with Western Airlines, becoming fourth largest U.S. carrier.
— 1989: Northwest is acquired in a leveraged buyout by an investor group that includes support from KLM Royal Dutch Airlines.
— 1991: Delta purchases most of Pan Am's trans-Atlantic routes and the Pan Am Shuttle.
— 1998: Northwest pilots strike for 15 days.
— Oct. 1, 2004: Northwest CEO Richard Anderson leaves to join UnitedHealth; Doug Steenland becomes CEO of Northwest.
— Aug. 20, 2005: Northwest Mechanics strike rather than accept wage cuts and layoffs.
— Sept. 14, 2005: Both airlines file for Chapter 11 bankruptcy protection.
— April 30, 2007: Delta emerges from bankruptcy.
— May 31, 2007: Northwest exits bankruptcy protection.
— Sept. 1, 2007: Anderson becomes CEO of Delta.
— April 14, 2008: Delta and Northwest announce intent to combine in stock-swap deal.