If you fly enough to benefit from United Airlines Mileage Plus or American Airlines AAdvantage bonus miles programs this is something you can do to help the thousands of victims from hurricane Harvey.
United Airlines Mileage Plus members who donate to the Red Cross, Americares, Airlink or OPeration USA via United's fundraising page will get bonus miles for donations starting at 50 dollars. The more money you donate the more bonus miles you'll get up to 1,000 bonus miles. You'll get 250 bonus miles for the minimum 50 dollar donation.
American Airlines is offering 10 bonus miles for every dollar you give to the Red Cross through September 24th. The minimum donation is 25 dollars.
The Red Cross also accepts donations of bonus miles to help transport victims and volunteers. Every little bit helps