There are few transatlantic crossings that reward the discerning traveler quite like the run from Logan to Scandinavia, and securing business class from Boston to Copenhagen puts you in an enviable position: a manageable seven-and-a-half-hour flight that's short enough to feel efficient yet long enough to genuinely enjoy a flat-bed seat and a proper meal service. The three carriers serving this market — Delta, SAS, and United — each bring a meaningfully different product to the cabin. Delta's Comfort-forward Delta One suite, featuring a sliding door for privacy on select widebody aircraft, has become a genuine benchmark for North Atlantic travel, while SAS offers its long-haul business product with direct aisle access and a Scandinavian design sensibility that feels quietly at home the moment you're wheels-up toward Copenhagen. United's Polaris business class, with its lie-flat seat and dedicated bedding program, remains a strong contender, particularly for travelers who can leverage hub connections through Newark.
Speaking of connections, Boston to Copenhagen operates with both nonstop and one-stop routings, and the choice matters more than most travelers realize. SAS frequently routes through its Copenhagen hub directly from Boston, making it the cleanest option for minimizing travel time. If you're connecting through Newark on United Polaris, arrive at EWR with meaningful buffer time — the international terminal can move slowly during peak summer departures. The best months for elevated availability and relatively favorable positioning on this route run from May through September, when transatlantic demand peaks but airlines also deploy additional capacity, occasionally creating pockets of accessible premium inventory that savvy bookers can exploit.
The insider move here is to watch SAS specifically during its promotional fare windows, which tend to surface mid-week and reset quietly — these rarely get the same social media amplification as Delta flash sales, meaning less competition for the same seats. Given how quickly this inventory shifts with seasonal demand and schedule changes, setting up automated fare alerts calibrated specifically to this route is genuinely the difference between flying Polaris or SAS business and spending the crossing in economy.
