Minnesota Vikings (4), appeared in Super Bowls IV, VIII, IX, and XI. They won the NFL Championship Game in 1969, the last year before the AFL -- NFL merger, but failed to win the subsequent Super Bowl. An NFL expansion team in 1961, they have no pre-Super Bowl league championships. Buffalo Bills (4), appeared in Super Bowls XXV, XXVI, XXVII, and XXVIII. Their second and last AFL championship was in 1965, the season before the first Super Bowl. Cincinnati Bengals (2), appeared in Super Bowls XVI and XXIII. An AFL expansion team in 1968, they have no pre-Super Bowl league championships. Atlanta Falcons (2), appeared in Super Bowls XXXIII and LI. An expansion team in 1966, they have no pre-Super Bowl league championships. Carolina Panthers (2), appeared in Super Bowls XXXVIII and 50. A post-merger expansion team, their first season was in 1995. Arizona Cardinals (1), appeared in Super Bowl XLIII. Their last championship was in 1947 as the Chicago Cardinals. Los Angeles Chargers (1), appeared in Super Bowl XXIX as the San Diego Chargers. Their only AFL championship was in 1963. Tennessee Titans (1), appeared in Super Bowl XXXIV. They won the first two AFL Championships in 1960 and 1961 as the Houston Oilers.
who lost the most super bowls in nfl history
Minnesota Vikings Buffalo Bills