American Airlines & US Airways both have 2,000 bonus offer with Rewards Network after first dine of $30 more.
You need to join by June 13, 2014, and have the first dine within 30 days of signing up for the service. You can earn the bonus on both US’ and AA’s programs.
You can access AA’s version of this offer here and US’ here.
You can join both US Airways and American Airlines programs and collect 4,000 miles by dining twice. The US Airways Dividend Miles miles will eventually turn to AAdvantage miles sometime late 2014 or early 2015.
Conclusion
Rewards Network has similar offer for United fliers as well, but that requires 4 dines (access here). If you are after AA/US miles and sometimes dine out, you can easily collect the bonus on both programs.
Here are the terms and conditions for the AA offer:
This bonus offer is open only to new members who have not yet created a dining profile in the AAdvantage DiningSM program who join and create their dining profile by August 30, 2014. A dining profile includes creating a web login and opting in and remaining opted in to receive emails from the AAdvantage DiningSM program with a valid, deliverable email address. To qualify, your profile must originate through one of the links on this page. You must enroll and create your dining profile by August 30, 2014 to qualify for this bonus. You must continue to satisfy other Online and/or VIP Member level criteria to get this bonus.
To earn this bonus, you must spend a total of $30 or more (including tax and tip) in one dine at a participating restaurant, bar or club after joining the AAdvantage DiningSM program (via the link above). You must dine within 30 days of joining and complete your post-dine review within 30 days of your dine. You may earn this bonus one time for a total of 2,000 AAdvantage bonus miles. In addition, the dine must occur during a valid reward period and be paid for with a credit or debit card registered in the AAdvantage DiningSM program. Limit one Sign Up and Dine Bonus per member. Offer is not combinable with other AAdvantage DiningSM bonuses. Please allow 6–8 weeks from your qualifying dine for any bonus miles to post to your AAdvantage® account. Your dining profile and registration must be completed by August 30, 2014. All account inquiries related to this bonus must be received by September 30, 2014.
Here are the terms and conditions for the US offer:
This bonus offer is open only to new members who have not yet created a dining profile in the Dividend Miles Dining who join and create their dining profile by June 13, 2014. A dining profile includes creating a web login and opting in and remaining opted in to receive emails from Dividend Miles Dining with a valid, deliverable email address. To qualify, your profile must originate through one of the links on this page. You must enroll and create your dining profile by June 13, 2014 to qualify for this bonus. You must continue to satisfy other Online and/or VIP Member level criteria to earn this bonus.
To earn this bonus, you must spend a total of $30 or more (including tax and tip) in one dine at a participating restaurant, bar or club after joining Dividend Miles Dining (via the link above). You must dine within 30 days of joining and complete your post-dine review within 30 days of your dine. You may earn this bonus one time for a total of 2,000 bonus miles. In addition, the qualified dine must occur during a valid reward period and be paid for with a credit or debit card registered in Dividend Miles Dining. Limit one Sign Up and Dine Bonus per member. Offer is not combinable with other Dividend Miles Dining bonuses. Dining activity that occurred prior to registering for this bonus is not eligible for this promotion. Please allow 6–8 weeks from your qualifying dine for any bonus miles to post to your Dividend Miles account. All account inquiries related to this bonus must be received by August13, 2014.