Through Super Bowl LII (52), the New England Patriots have appeared 10 times (winning 5).
They have twice played in 3 Super Bowls in a 4-year period (2001-2004 and 2014-2017).
(The Pittsburgh Steelers, Dallas Cowboys, and Denver Broncos have each played in 8)
New England (5-5):
L 1985 SB20: 46-10 Chicago over New England (1986)
L 1996 SB31: 35-21 Green Bay over New England
W 2001 SB36: 20-17 New England over LA Rams
W 2003 SB38: 32-29 New England over Carolina
W 2004 SB39: 24-21 New England over Philadelphia
L 2007 SB42: 17-14 NY Giants over New England
L 2011 SB46: 21-17 NY Giants over New England
W 2014 SB49: 28-24 New England over Seattle
W 2016 SB51: 45-38 New England over Atlanta
L 2017 SB52: 41-33 Philadelphia over New England
The Cowboys with a total of 8 Super Bowl appearances.
As of Super Bowl XLII, that would be the Denver Broncos and Pittsburgh Steelers with 6 Super Bowl appearances.
Bills 4
The New England Patriots have appeared in the most Super Bowls with nine. The Dallas Cowboys and the Pittsburgh Steelers have eight Super Bowl appearances.
Through Super Bowl XLIII, no. The team with the most Super Bowl appearances is the Dallas Cowboys with 8.
Dallas
The Dallas Cowboys with 8.
The Minnesota Vikings
Buffalo Bills- four straight super bowl appearances
The Dallas Cowboys went to the Super Bowl 8 times. The most in Super Bowl history. They are 5-3.
The San Francisco Forty Niners are the only team to win all 5 of their Super Bowl appearances.
The Dallas Cowboys, with a total of five(5) appearances.