Delta Airlines Logo Evolution

Delta Air Lines, is a major United States airline headquartered in Atlanta, Georgia that operates an expansive domestic and international network, spanning North America, South America, Europe, Asia, Africa, the Middle East and the Caribbean. In terms of passengers carried (approximately 119 million in 2005),Delta is the second-largest airline in the world (behind American Airlines).
The current Delta Airlines logo is a comprises of two 3-dimensional triangles representing a larger triangle with the world DELTA next to it. The logo's origins can be traced back to 1959 logo which was the first time, the design was introduced. The logo (also called the widget) was inspired by the swept-wing design of the DC-8 airplanes. The red, white and blue represented the colors of the American flag. The logo has undergone some changes over the years with the the logo being placed sideways, made softer etc, but the current logo is probably the most significant change with the introduction of the solid red color. The 3-dimensional red widget logo reflects Delta's successful transformation into a highly-differentiated, customer-focused airline

		1928-1966 Delta crop-dusting logo (originally created for the Huff Daland Dusting Company in 1925). Thor, the Norse god of thunder, war and agriculture, symbolizes the fight against the boll weevil insect in the 1920s.
		1929-1930  First passenger service logo featured Mercury, the Roman god of travel and commerce. The triangle represents the "D" of the Greek alphabet, which is "Delta."
		1934 Logo introduced when Delta began flying mail over Air Mail Route 24, from Ft. Worth, Texas to Charleston, South Carolina.
		1934-1951  Winged triangle represents the Greek letter "delta." From 1934-1939, often see the inscription "AM 24" (Air Mail Route 24) inside triangle.
		1945-1953 "Flying D" logo. Many variations of logo appeared up to 1959.
		1953-1955  Delta-C&S logo. Chicago & Southern (C&S) Airlines merged with Delta on May 1, 1953.
		1955-1959 Return to the "Flying D" logo used before C&S Airlines merger.
		1959  Jet "widget" logo. Introduced during Delta's "Royal JET Service" promotion for the DC-8, the first jet in 1959.
		1959-mid 1960s Sideways widget logo represents the speed of jets.
		1962-mid 1960s  Widget in oval logo.
		1960s-1970s Small widget logo. Small widget over or on left side of the company name.
		ca. 1963-1993 Large widget logo. Large widget extends over the top of the word DELTA. "AIR LINES" may be included in smaller letters.
		1976 U.S. Bicentennial logo.
		April 1, 1985 Signature Service logo.
		Late 1980s-1990s  Widget + Delta logo.
		Early 1990s-1995 Full corporate name logo.
		March 1995-March 2000  Full corporate name logo updated.
		March 2000-July 2004  Soft widget logo.
		July 2004-April 30, 2007  Based on employee feedback and nostalgia associated with Delta's 75th anniversary, the Heritage Widget replaced the softer widget logo.
		April 30, 2007-Present  3-dimensional red widget logo reflects Delta's successful transformation into a highly-differentiated, customer-focused airline.