Because every option on Phoenix to Gothenburg business class involves a connection, the routing you pick matters as much as the airline. A Heathrow or CDG connection means you're changing planes in Europe with a shorter final hop to Gothenburg, while DFW, CLT, ATL, or MSP connections keep you domestic for the first leg before a long transatlantic overnight. If you're sensitive to jet lag, the eastbound overnight leg is the one to protect — try to book it on whichever carrier gets you into a lie-flat seat immediately rather than sitting through a long domestic leg first. January through March and October through November are the sweet spot for this route: fares dip because Scandinavian leisure demand is low, but business travel to Gothenburg's industrial sector keeps schedules reliable, and you avoid the summer crowds and the premium pricing that comes with Nordic peak season.