Looking at the standings this morning, I don't think we're catching Minnesota or Vancouver. I also think the teams with 78 points (Colorado, Dallas & San Jose) are also quite likely out of the race.
That leaves Winnipeg, Los Angeles, & Calgary. I think the Kings may have the toughest schedule on paper, assuming the teams at the top of the standings show up to play each night.
As long as the Flames beat the teams below them in the standings, they should make the playoffs. It may very well come down to the final two games of the season - against Winnipeg & Los Angeles.