Yes, that's right: for roughly the same price as two IMAX movie tickets, you can score round trip flights to/from many of the country's biggest cities. This massive savings is only available for Tuesday/Wednesday departures from September through November, making them perfect for an impromptu, week-long vacation.
Qualifying itineraries include LA to/from Chicago, SF to/from Chicago, and NYC to/from Miami, Atlanta, and Denver. If you're not in any of those cities, well, sorry. Maybe move somewhere more relevant?