Airlines offering business class on narrowbody jets from US to Europe

Delta Air Lines operates Boeing 737-900ERs and Airbus A321neos with either 20 or 16 business class seats on routes such as Dallas Fort Worth (DFW) to London Heathrow (LHR), via Atlanta's Hartsfield-Jackson International Airport.

SAS Airlines features 22 Thompson Aero Vantage seats in an alternating configuration on its Airbus A321neo, connecting Copenhagen and Oslo with cities like Boston and Washington D.C. AeroLOPA describes them as "constructed as pairs and solo seats."

Icelandair uses Boeing 737 MAX 8, MAX 9, and 757-200 aircraft with up to 22 recliner seats for various U.S. destinations via Keflavík Airport.

Aer Lingus offers 16 Thompson Aero Vantage seats in a mixed configuration on their Airbus A321neo LR/XLR aircraft from Dublin to several U.S. locations including Boston and New York-JFK.

Azores Airlines connects European destinations with Boston and JFK using its Airbus A321neo equipped with spacious business cabins.

TAP Air Portugal operates similar configurations with its Airbus A321neo LR/XLR connecting Lisbon with major U.S. cities like Newark and Washington D.C.

United Airlines uses Boeing 757-200s featuring Collins Aerospace Diamond Parallel seats for routes such as EWR to Edinburgh (EDI).

Lastly, Iberia flies an Airbus A321neo XLR from BOS to Madrid Barajas Adolfo Suárez Airport featuring Thompson Aero Vantage Solo herringbone suites that convert into fully-flat beds.