when was seattle's last super bowl

Seattle’s last played Super Bowl before this current 2026 trip was Super Bowl 49 at the end of the 2014 season, a 28–24 loss to the New England Patriots on February 1, 2015. Their last win was Super Bowl 48, played on February 2, 2014, when they blew out the Denver Broncos 43–8.

Since the question is “when was Seattle’s last Super Bowl,” the most up‑to‑date answer as of early 2026 is that they are back in the Super Bowl this season (Super Bowl 60 vs. the Patriots), so their previous Super Bowl appearance was that 2014 season matchup in Super Bowl 49.