US transportation secretary Pete Buttigieg wants airlines to give FAA more advance notice when adding capacity or starting new service in crowded markets.
Airlines in Europe and the US are expecting increased traffic across the Atlantic with the loosening of COVID-19 restrictions for foreign travelers entering the US.
The US and UK governments are being urged to launch a testing trial for passenger flights between New York and London to speed the return of transatlantic routes and capacity.
US airlines are projected to carry more than 50 million passengers over the winter holiday travel period, with 91,000 additional seats per day on offer.