Take advantage of $300 offer from Chase : United Mileage Plus Visa Signature Card

https://applynow.chase.com/FlexAppWeb/renderApp.do?SPID=CSH4

Note:

You can exchange30,000 bonus miles for http://www.united.com/page/article/0%2C6722%2C51662%2C00.html

$300 for United Airlines air-ticket.

Other possible rewards include:

$250 in http://www.united.com/page/article/0%2C6722%2C52130%2C00.html

"Lettuce Entertain You" Dining Gift Cards
OR
http://www.united.com/page/article/0%2C6722%2C52131%2C00.html

$1500 in dining gift certificates (15 X four $25 gift certificates for 20000 miles) from http://www.ibankdesign.com/restaurantcom.html

Terms:

Spend $250 with the card.

No first annual fee.