DALLAS  The 400 ticket holders who were denied seats at the Super Bowl on Sunday when temporary bleachers erected at Cowboys Stadium were deemed unsafe were offered free tickets to next year’s Super Bowl as guests of the N.F.L., Commissioner Roger Goodell said Monday.

“We apologize to those fans that were impacted,” Goodell said during a news conference at a downtown hotel. “We are going to work with them and we are going to do better in the future. We will certainly do a thorough review and get to the bottom of why it all occurred, but we take full responsibility.”

On the morning after the Packers’ 31-25 victory over the Steelers, the most sought-after figure for comment was not Green Bay quarterback Aaron Rodgers, who was presented with the Most Valuable Player award, but someone who is usually more anonymous than an offensive lineman.

Eric Grubman, the N.F.L.’s executive vice president for business operations, was called on to explain how roughly 1,250 people holding tickets for the game were displaced or turned away because sections of temporary bleachers were declared unsafe and unusable.