September 29- New routes connecting Boston and Dublin, and will offer seasonal flights between New York, Lisbon and Berlin will be added by Delta Airlines next summer, according to Travel and Leisure.

The idea of connecting these destinations with new routes came up because of the evident increase in the number of tourists from the United States to European cities like Lisbon and Berlin as stated by the airline's vice president for New York, Henry Kuykendall.

"We are pleased to offer nonstop service from New York to both Lisbon and Berlin for the summer 2017 season, enabling Americans to enjoy two popular European destinations during some of the busiest travel months," Keykendall said in a statement.

The airlines will operate Dublin and Lisbon flights with a 164-seat Boeing 757-200, and a 225-seat Boeing 767-300 for the Berlin flights.

According to Airways, Delta's idea of adding three new routes will compete with Ireland's Aer Lingus from Boston and New York and New York with daily flights to Dublin while Air Berlin is readying an increase from 7 to 10 weekly flights in its JFK-Berlin route.

Travelers will be able to travel effortlessly with the new routes which will be opened by the airline on May 25. Routes connecting the destinations will be with the Boston's Logan International Airport and Dublin Airport, and between New York City's John F. Kennedy International Airport and Lisbon Airport with their nonstop service, as well as JFK and Berlin's Tegel Airport.

Delta Airlines, which is based in Atlanta, is planning to add more than 22 percent of seat capacity in Boston by June next year compared to their seat capacity in June 2014. They also plan to offer 90 peak day departures to 26 destinations.

The airlines have also announced new Domestic and Caribbean services from Boston with flights from San Francisco and Nashville, and more flight frequencies to Seattle and Milwaukee last August.