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Update: Some offers mentioned below are no longer available. View the current offers here.

Tuesday, United launched a 50,000-mile bonus offer with the United MileagePlus Club Card, and today the airline’s back to sweeten the deal for existing cardholders. While there isn’t an opportunity to earn tens of thousands of miles, you may be eligible to score a 5,000-mile bonus after spending $3,000 by December 31, 2017.

This offer may be targeted, but I was able to register here by entering my MileagePlus number along with the last four digits of my Club Card account.

I tried to register my MileagePlus Explorer Card, but that number wasn’t recognized, so it appears that United is specifically targeting Club cardholders, in addition to individuals with the now-defunct Presidential Plus Card.

If you’re eligible, it may be worth meeting the spend requirement for this bonus. We value United miles at 1.5 cents each, making the bonus offer worth $75. Additionally, all purchases earn 1.5 miles per dollar with the United MileagePlus Club Card, while United purchases earn 2 miles per dollar. Assuming you spend exactly $3,000 by the end of the year, you’ll earn at least 9,500 miles for your purchases, or almost 3.2 miles per dollar spent for a 4.8% return.

Are you eligible for United’s latest spend-based promo?

Know before you go.

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