American Airlines Group Inc. AAL, -1.75% has rebuffed earlier reports that the two explosions at Brussels international airport on Tuesday happened next to its check-in desk. The air carrier said its check-in is at row 8 in the Zaventem airport departure hall, and that the explosions did not occur at row 8. The airline has canceled flight 751 from Brussels to Philadelphia on Tuesday after the blasts, thought to be retaliation for the capture of Paris terror suspect Salah Abdeslam. At least 21 people have died in explosions at the airport and at the Maalbeek Metro station in Brussels Tuesday. Shares of American Airlines were down 2.9% premarket.