How you spend 50,000 American AAdvantage miles is up to you. However, based on American Airlines’ current award chart, 50,000 miles is enough for:
Four one-way (or two round-trip) MileSAAver award flights within the continental U.S. & Canada
One round-trip MileSAAver off-peak flight from the United States to Europe
A round-trip MileSAAver award flight from the continental U.S. to Hawaii