The unconfirmed combination could hold benefits for both carriers, but would likely encounter significant regulatory hurdles.

The airline is launching seasonal routes from Boston to Madrid, Spain, and Edinburgh, Scotland, starting this May, which will join existing service to Dublin, Amsterdam, London and Paris.

In fall 2021, the airline made an inaugural flight into London, marking its foray into the European market. Not long after, the airline continued its transatlantic expansion with Paris and Amsterdam.