For a limited time, the Premier Miles & More World MasterCard has boosted its signup bonus up to 50,000 award miles–enough to redeem for a round-trip flight award from the U.S. to Hawaii, Europe or the Caribbean. Through June 30, 2014, you’ll earn 20,000 award miles after your first purchase or balance transfer and then another 30,000 award miles after you spend $5,000 within the first 90 days of account opening. That’s up from the 35,000 award miles the card was previously offering.

Other benefits of the card include:

• Earn 2 award miles per $1 on ticket purchases directly from Miles & More integrated airline partners and 1 mile per $1 on all other purchases. (Miles & More integrated airline partners are: Adria Airways, AirDolomiti, Austrian Airlines Group, Brussels Airlines, Croatia Airlines, LOT Polish Airlines, Lufthansa, Lufthansa Regional, Lufthansa Private Jet, Luxair and SWISS.)
• Cardholders receive a companion ticket after first use of the account and annually after each account anniversary
• No foreign transaction fees on purchases made outside the U.S.
• Redeem miles for flight awards and upgrades on Lufthansa, Austrian Airlines, Brussels Airlines, SWISS, Star Alliance member airlines and other partners

The annual fee of $79 is waived for Senator and HON Circle Members.

For more info or to apply, see this link.