DALLAS — American Airlines has ended its policy of extending special fares to passengers who must book a last-minute flight because of a relatives death.The move brings American in line with the policy at merger partner US Airways, which does not offer bereavement fares. Walk-up prices tend to be the highest on any airline, putting family members in a bind when a relative far away dies or becomes seriously ill. American didnt have a specific discount for bereavement travel, but it had a different fare class that could produce a lower price than the traveler might otherwise find. In a statement Wednesday, American said that it is making the change to have a single, consistent program for American and US Airways. It said customers can buy changeable and refundable tickets and can apply future reservations to a last-minute flight and be eligible to waive the fee usually $200 for a domestic flight for changing their itinerary. United Airlines said it offers a bereavement discount of 5 percent off the lowest available rate when the ticket is issued. Delta Air Lines did not respond to messages but says on its website that it offers additional flexibility on the best published fare in such cases if seats are available. Southwest Airlines and Virgin America said they dont offer bereavement fares. Consumer advocates have said travelers can sometimes find lower prices than the bereavement fares. Delta suggests as much on its website, saying that lower promotional fares may be available on the website or through its reservation center. American and US Airways merged in December, forming American Airlines Group, based in Fort Worth.