"The number of European travellers visiting the US has fallen sharply ... Visitors from western Europe who stayed at least one night in the US fell by 17 per cent in March from a year ago, according to the International Trade Administration. Travel from some countries — including Ireland, Norway and Germany — fell by more than 20 per cent, an FT analysis of ITA data showed [link].
The trend poses a threat to the US tourism industry, which accounts for 2.5 per cent of the country’s GDP. Some airlines and hotel groups have warned of waning demand for transatlantic travel and a “bad buzz” about visiting the US."
Full FT article: https://www.ft.com/content/6dc16a54-8de1-4f3b-8409-ecb566118127
Another interesting read: Nearly 200,000 fewer Europeans flew to the US in March, new data shows
So travelers looking for cheap flights are recommended to check prices of the main airlines of these countries, e. g. SAS, Lufthansa, Norwegian; and also the US airlines servicing the main airport hubs of those countries, e. g. Copenhagen, Frankfurt, Madrid, ...