Honeywell said on Monday it was considering a plan to separate its high-margin aerospace business, a move backed by activist investor Elliott Investment Management, which has been pushing for the company's breakup.

Alaska Air on Tuesday unveiled a plan to generate $1 billion in additional profits by 2027 by leveraging its acquisition of Hawaiian Airlines and booming demand for premium travel, sparking a rally in its shares.

Corporate executives were taking a wait-and-see approach to President-elect Donald Trump's vow to impose heavy tariffs on imports when he takes office in January, but many have raised concerns about the effect such levies will have on inflation.

Spirit Airlines has filed for bankruptcy protection, it said on Monday, after the pioneer of no-frills travel in the U.S. struggled with a long run of quarterly losses, failed merger attempts and looming debt maturities.