The Chiefs became an NFL team in 1967 when the AFL merged with the NFL to become one league. They were one of the original AFL teams.
They were still in the AFL until 1970, they won the Super Bowl IV in 1970 as the last AFL team, the following year they joined the NFL as part of the AFC
The Chiefs were originally named The Dallas Texans and was founded by Lamar Hunt as a member of the American Football League(AFL). The Chiefs relocated to Kansas City in 1963 and took the name that they have now. They then joined the NFL during the NFL-AFL merging in the year 1960.
Chat with our AI personalities
Officially, 1970. The Kansas City Chiefs began as the Dallas Texans when the American Football League was formed in 1960. The Texans moved and became the Chiefs prior to the 1963 season. The Chiefs, along with the nine other AFL franchises, officially joined the NFL prior to the 1970 season.
Originally called the Dallas Texans, the chiefs moved to Kansas City and entered the NFL during the NFL-AFL merge in 1970.