Lufthansa Group will end long-haul service on low-cost airline Eurowings in an attempt to make the brand profitable. 

Lufthansa, Austrian and Swiss will take over the long-haul routes, leaving Eurowings to focus on shorter flights. 

"Further details and information will come in the third quarter of this year," spokeswoman Christina Semmel said in an email.

This summer, Eurowings is flying five U.S. routes, all from Dusseldorf. The carrier flies to New York JFK, Newark, Miami, Fort Myers and Las Vegas. 

Lufthansa Group introduced Eurowings into the U.S. market in 2016, when low-cost transatlantic aviation was a fast-growing sector. 

However, Eurowings has been a money loser, and operated at a minus-5.5% margin last year. Other discount transatlantic airlines have also struggled. Wow ceased operations in March, Nordic ultralow-cost carrier Primera Air shut down last fall, and Norweigan Air lost approximately $450 million last year.

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