United Airlines announced that, starting with tickets purchased on or after April 2, primary United MileagePlus cardholders will earn up to twice as many miles per dollar for United flights as non-cardholders and earn even more miles when they use their United card to buy their ticket.

For example, MileagePlus 1K members will earn 17 total miles per dollar when buying eligible United flights with their United Club card — which is among the most of any airline or credit card travel rewards program, according to the announcement. United cardholders also get at least 10% off every United flight award ticket they book, and cardholders who are MileagePlus Premier members save at least 15%.

United is also giving general MileagePlus members who have a United credit or debit card access to Saver Award inventory in United Polaris Business Class that was previously available only to Platinum and 1K members. And when paired with the new award discounts for cardholders, United Polaris Saver Award seats will be priced as low as 72,000 miles (10% less) for general members with a card, or as low as 68,000 miles (15% less) for cardholders with Premier status.

Andrew Nocella, chief commercial officer, said, “The most rewarding way to fly United is as a MileagePlus member, and the best way to get the most value from the MileagePlus program is to have one of our credit or debit cards.” MileagePlus members, he said, “can now earn more miles faster with a United card — and every one of those miles will go further with our always-on award ticket discounts and expanded access to Saver Award fares.”