Title: Miami Dolphins
Content:  The team played in its first Super Bowl in Super Bowl VI, losing to the Dallas Cowboys, 24–3. The following year, the Dolphins completed the NFL's only perfect season, culminating in a Super Bowl win, winning all 14 of their regular-season games, and all three of their playoff games, including Super Bowl VII. They were the third NFL team to accomplish a perfect regular season, and the first team to do so after the AFL-NFL merger, the time known as the Super Bowl era. The next year, the Dolphins won Super Bowl VIII, becoming the first team to appear in three consecutive Super Bowls, 
Title: Miami Dolphins
Content:  division titles, 10 playoff appearances, and an appearance in Super Bowl XIX before retiring following the 1999 season. In 2008, the Dolphins became the first team in NFL history to win their division and make a playoff appearance following a league-worst 1–15 season. That same season, the Dolphins upset the New England Patriots on the road during Week 3 thanks to the use of the gimmick Wildcat offense, which handed the Patriots their first regular-season loss since December 10, 2006, in which coincidentally, they were also beaten by the Dolphins. To date, 2008 is also the last season the Dolphins won the AFC East.
Title: Super Bowl
Content:  would be the Dolphins' final loss for over a year, as the next year, the Dolphins would go 14–0 in the regular season and eventually win all their playoff games, capped off with a 14–7 victory in Super Bowl VII, becoming the first and only team to finish an entire perfect regular and postseason. The Dolphins would repeat as league champions by winning Super Bowl VIII a year later. In the late 1970s, the Steelers became the first NFL dynasty of the post-merger era by winning four Super Bowls (IX, X, XIII, and XIV) in six years. They were led by head coach Chuck Noll, the play of offensive stars Terry Bradshaw, Franco 
Title: Super Bowl VII
Content:  temperature was 84 F, making the game the warmest Super Bowl. This was the Dolphins' second Super Bowl appearance; they had lost Super Bowl VI to Dallas the previous year. The Dolphins posted an undefeated 14–0 regular season record before defeating the Cleveland Browns and Pittsburgh Steelers in the playoffs. The Redskins were making their first Super Bowl appearance after posting an 11–3 regular season record and playoff victories over the Green Bay Packers and Dallas Cowboys. Despite being undefeated, the Dolphins were actually one-point underdogs, largely based on the weakness of their regular season schedule (and losing the previous Super Bowl). Super Bowl VII was largely dominated by the Dolphins, and is the second-lowest-scoring Super Bowl to date 
Title: 2000 Miami Dolphins season
Content:  Dolphins' fourth consecutive winning season and the first time the club won the AFC East title since 1994. Additionally, this was the Dolphins' fourth consecutive season in which they advanced to the playoffs. In the wild card round, they defeated the Indianapolis Colts by a score of 23–17 in overtime. However, the Dolphins were shut out 27–0 by the Oakland Raiders in the divisional round the following week. As of the 2020 season, this is the last season that Miami has won a playoff game, making it 20 straight years that the Miami Dolphins have failed to win in the playoffs. It also marked the last time the Dolphins swept the New England Patriots during the regular season. Seven Dolphins players were selected for the Pro Bowl.
Title: Miami Dolphins
Content:  the Dolphins, at 2–11, upset the defending Super Bowl champion Patriots 28–29, and handed them the second of their 2 losses that season. The rivalry briefly intensified in 2005 when Nick Saban, Bill Belichick's former Browns defensive coordinator was hired as their new head coach and when Saban nearly signed quarterback Drew Brees, as well as in 2008, when the two teams battled for the AFC East division title. Miami and New England are also the only two franchises to have posted undefeated regular-season records since the NFL-AFL merger, with Miami going 14–0 in 1972 and New England going 16–0 in 2007, but only the 1972 Dolphins were able to win the Super Bowl.
Title: History of the Miami Dolphins
Content:  teams heading to the Super Bowl XLI. They were predicted to lose by a field goal to the Carolina Panthers in their own Dolphin Stadium. In Saban's second season, the Dolphins were expected to contend for a playoff spot. The season turned out to be a major disappointment. Before the season began, Ricky Williams tested positive for the 4th time for violating the NFLs substance abuse policy, ending his season. The season started out with a rough loss to the defending Super Bowl champions, the Pittsburgh Steelers. The Dolphins went on to start the season with a record of 1–6. However, they had seemed to have turned something around midseason, 
Title: 2006 Miami Dolphins season
Content: In 2006, the Dolphins shut out the New England Patriots 21–0 the previous week and were shut out by the Buffalo Bills by the same deficit the next week. ; Starting quarterback Joey Harrington won the CBS All-Iron Award for his performance on Thanksgiving and got to sample Phil Simms' mother's blackberry cobbler. ; When Daunte Culpepper was signed by the Dolphins, Las Vegas odds-makers elevated the Dolphins' Super Bowl chances from 25-to-1 to 10-to-1. ; Since the Dolphins last played in the AFC Championship Game in 1992, all but three AFC teams have made it that far. The exceptions are the Houston Texans, the Cincinnati Bengals, and the Cleveland Browns. 
Title: 2020 Miami Dolphins season
Content:  franchise to five Super Bowl appearances, winning back-to-back championships in 1972 and 1973. Famously, in 1972, Shula led the Dolphins to their first Super Bowl title, as well as the only perfect season by a team since the 1970 AFL-NFL merger. The Dolphins improved on their 5–11 record from the previous season, following a Week 10 win over the Los Angeles Chargers. After beginning the season 1–3, the Dolphins established themselves as playoff contenders by winning five straight games and starting with a 6–3 record for the first time since 2001. They also started 8–4 for the first time since 2003. The team clinched their first winning season since 
Title: History of the Miami Dolphins
Content:  Damon Huard led a comeback. During the previous two years, the Broncos had won the Super Bowl, ending years of futility for their quarterback, John Elway. Marino was now being hailed as the next great success story, but it was not to be. Miami proceeded to go 2–6 in their last eight games, but still backed into the playoffs at 9–7. After a close 20–17 win at Seattle in the wild card round, the Dolphins faced the Jacksonville Jaguars in the divisional round and suffered a disastrous 62–7 rout, the second most lopsided postseason game in NFL history after the 1940 NFL Championship. Marino subsequently announced his retirement, and head coach Jimmy Johnson also left the team.

Question: when is the last time the dolphins went to the superbowl?
Answer: Super Bowl XIX.
1984.