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It is among the signs that the slow recovery in air travel will gain speed this summer as states re-open their economies.
American said it plans to operate 55 percent of the U.S. flights that it ran in July 2019. The airline only operated 20 percent of its schedule in April and May.
Shares of American Airlines Group rose 41 percent to close at $16.72. That is the stock's biggest one-day percentage gain since the current company was formed by a 2013 merger with US Airways.
|AAL||AMERICAN AIRLINES GROUP INC.||13.03||-0.01||-0.08%|
|UAL||UNITED AIRLINES HLDG.||34.33||-0.07||-0.20%|
United Airlines closed up 16 percent before it announced its plans to add back some flights. United will still operate only 30 percent of last July's schedule.
In April, restrictions aimed at curbing the spread of the new coronavirus caused air travel to plummet to levels not seen since the 1950s.
Some days, fewer than 100,000 people passed through U.S. airport security checkpoints.
The Associated Press contributed to this article.