Wyndham has launched a 1 Million Mile Giveaway with 4 US airlines, click the following to enter:
The rules limit to one entry per contest but each seems to be an independent contest so I entered all 4. You can register until August 26 but best to do so now as each has drawings at intervals during the period and those who do not win are retained for subsequent drawings. Note also that each has its own way to divvy up the prizes. Limited to US residents.