This route will be able to open up transatlantic connections to our passengers via Dublin and is a huge step forward for the airport. The Aer Lingus Regional connection means that passengers travelling to the states will be able to travel on one through booking. They'll be able to drop their baggage at Doncaster Sheffield without having to check it in again at Dublin for their onward connection , and importantly clear US Immigration in Dublin ahead of arriving in New York and Boston. All Franchise flights from Doncaster Sheffield to Dublin are now on sale on www.aerlingus.com