We “have the ability to negotiate the substitution of certain aircraft types for other aircraft types as part of our flexible fleet plan, and we are considering the Boeing 777-300ER in this context,” United spokeswoman Megan McCarthy said in an emailed statement. McCarthy did not say which aircraft United was considering switching from, though The Wall Street Journal reported earlier that it is nearing a deal to swap at least 10 Boeing 787 Dreamliners for the 777-300ERs. McCarthy said that United currently is not considering placing new orders for wide-body aircraft.