Delta Air Lines has announced the introduction of four new or returning routes to Europe for 2027, expanding its presence as the second-largest airline operating transatlantic flights from the United States. Notably, the airline’s latest addition connects Boston Logan International Airport (BOS) to Reykjavík’s Keflavik International Airport (KEF). This marks Delta’s return to using Boeing 757 aircraft on European routes for the first time in four years.
The Boston to Keflavik route is set to re-launch in April 2027 after being suspended during the COVID-19 pandemic between May and September 2021. Delta operated up to daily flights on this route prior to its suspension. Covering a distance of 2,097 nautical miles (3,884 km), BOS-KEF will become Delta’s shortest route to Europe. The resumption will allow the airline to operate four routes to Iceland, which until now included Detroit (DTW), Minneapolis-St. Paul (MSP), and New York’s John F. Kennedy International Airport (JFK).
With the addition of KEF, Delta will cater to U.S. travelers, including loyalty program members and those transferring through Boston to other destinations across the country. The airline previously faced limited competition on this route, as it only had one competitor, Icelandair, following the exit of the low-cost carrier PLAY in 2025.
In addition to the KEF service, Delta will expand its offerings with a new route from Boston to Venice Marco Polo Airport (VCE). This destination was identified as the largest unserved European airport from Boston, with 47,000 round-trip indirect passengers recorded in the year ending August 2026. The route was primarily active from May to August.
For the summer of 2027, Delta plans to operate 14 routes from Boston to Europe. These routes will include multiple daily flights to major cities such as Amsterdam, Athens, Barcelona, and Paris, resulting in a 17% increase in capacity compared to the previous year. Delta is forecasted to hold a 26% share of all flights from Boston to Europe, leading over the second-place airline, JetBlue, which holds 17%.
As the transatlantic travel landscape evolves, multiple carriers are also expanding their services to Iceland. Icelandair will begin flights from KEF to St. Louis on May 14, while American Airlines is set to introduce daily service from Philadelphia to KEF starting May 27. Both airlines will utilize modern aircraft for these routes.
Delta’s recent announcements signify a potential for further growth in transatlantic connections, with the possibility of additional routes being introduced as market demand evolves.
