United Airlines offers its MileagePlus members 1,000 MileagePlus miles for free when you register with Thanks Again Rewards, via the directions below. That's twice as many bonus points as we saw in May, making it the best such free award miles we've seen from United this year that doesn't involve a credit card signup. Some conditions may apply. The MileagePlus miles will be deposited within four to six weeks. Deal ends September 30. To get this deal:
  1. Click here to start
  2. click "Sign Up Now!" and fill out the form
  3. after signup, log into your new Thanks Again account and go to "My Account"
  4. click the "Want to get rewards on-the-go?" banner to the right
  5. click "Earn 1000 Bonus Miles" to fill out the form, using a valid Visa card and cell phone number
  6. complete the registration instructions to receive 1,000 MileagePlus miles for free