Now that Delta Air Lines and Korean Air have opted to take stakes in WestJet, Delta’s influence as a major investor in airlines worldwide continues to grow.

Copa Airlines has exercised options for six additional Boeing 737-8 aircraft, bolstering its total orderbook with the airframer to 57 jets.

Sun Country Airlines sees promising trends in close-in fares as a well-timed expansion of its cargo business helps shield the company from demand softness.