Bradley International isn't a hub that whispers "Scandinavia" to most travelers, but that's precisely what makes booking business class from Hartford to Copenhagen such an interesting exercise in routing strategy. There's no nonstop option here—Bradley's transatlantic service doesn't stretch that far—so your itinerary will run through Delta's New York-JFK or Boston hub, United's Newark or Chicago gateway, or American's Philadelphia or JFK connections, all feeding into one-stop journeys to CPH. Delta typically offers the most seamless connection profile for New England travelers, often routing through JFK or Boston with its A330 or A350 business class cabins, which feature fully lie-flat seats with direct aisle access on the A350 configuration. The total journey time, factoring in the connection, usually lands travelers in Copenhagen roughly 11-13 hours after wheels-up from Bradley, with the transatlantic leg itself averaging 8.5 hours.
Having flown this corridor numerous times, I've found that United's Polaris product, when routed through Newark, offers a compelling alternative, particularly on their 767 and 777 aircraft featuring Polaris seats with proper privacy dividers—useful if you're traveling solo and want to avoid the "chatty seatmate" scenario on an overnight flight. American, meanwhile, tends to route through Philadelphia, where their Flagship Business cabin (on select 777 and 787 aircraft) delivers reliable comfort, though I'd recommend checking your specific aircraft assignment since American's fleet still has some older business class configurations mixed in with newer Flagship Suites. My insider tip: build in at least a 90-minute connection window at your U.S. gateway rather than the minimum layover time shown at booking—summer thunderstorm delays out of the Northeast corridor are notoriously disruptive to tight connections, and missing your transatlantic leg from JFK, Newark, or Philadelphia can mean a full day lost.
Late spring through early fall—May through September—consistently offers the best combination of fare value and Copenhagen's famously long daylight hours, when the city's canals and Tivoli Gardens are at their most inviting. Given how much these fares fluctuate based on connection routing and seasonal demand, setting up automated fare alerts for this specific Hartford-Copenhagen corridor will save you from manually tracking three different airlines' pricing patterns across multiple gateway cities.
