Previously, Dublin, Ireland was the largest European destination without direct service from Seattle-Tacoma International Airport. However, that changed last week when Sea-Tac welcomed Aer Lingus’ first aircraft with nonstop service from Washington to Ireland.

“We are delighted to commence Ireland’s first and only direct service to Seattle, Washington State, with four direct flights each week,” Aer Lingus COO Mike Rutter said to mark the occasion. “Seattle as a destination holds great promise for Aer Lingus given the strong business ties between the two regions making this an important route for business travel as well as leisure trips as exemplified by the high demand for business class tickets on the route to date.”

The flights will be offered four times per week on Monday, Wednesday, Friday, and Sunday, each departing for Dublin at approximately 7:20 p.m. The aircraft will feature 23 flat-bed seats in business class as well as 243 economy class seats.

On the return flight, passengers will be able to avoid going through customs upon arrival in Seattle as they will have completed security procedures with the U.S. Customs and Border Protection before departing Dublin. This is the first trans-Atlantic service into Sea-Tac to provide this service.

“More than 800,000 Washingtonians claim ‘Irish’ as their primary ancestry, making this new connection a value in that regard, but also creating links to booming tech industries in both countries and an additional choice to travelers coming and going to Ireland,” Port of Seattle Commissioner Stephanie Bowman said it a statement. “This can be seen as a prize at both ends of the rainbow.”

Sea-Tac is one of the nation’s fastest-growing airports with four new international carriers having joined the airport in 2017, and three carriers (including Aer Lingus) having been added already this year in anticipation of the airport’s forthcoming International Arrivals Facility scheduled for completion in 2019.