Shopping around for a new MasterCard? Here's one that may appeal to the travel bug in you -- apply for a new WestJet RBC World MasterCard by September 30 and you'll receive 100 WestJet dollars and a $99 round-trip companion flight.

The $99 companion fare is valid when purchased in conjunction with another seat on any WestJet-operated flight in Canada or to the continental US. The $99 price does not include taxes, fees, and surcharges. The 100 WestJet dollars are equal to $100 towards any flight with WestJet, including the $99 companion fare. Cardholders will earn 1.5% back in WestJet dollars on every purchase and 2% back when purchasing WestJet flights or vacations.

Now that we've told you the good news, here's the "less good" news -- this card has an annual interest rate of 19.99% on all purchases and cash advances and an annual fee of $79 for the primary card and $39 for each additional card you may require. For complete details on other fees and late penalties associated with this card, or to apply, visit this page.

There is also the option of the WestJet RBC MasterCard for a lower annual fee of $39 for the primary card and $19 for additional cards. Cardholders who opt for this version will earn 1% back in WestJet dollars on purchases and 1.5% back when purchasing WestJet flights or vacations. With this card you will receive 50 WestJet dollars as your bonus gift and will not be eligible for the $99 companion fare.

Note: While the deadline for the 100 WestJet dollars and $99 companion fare is listed as April 30, 2012 on this page, the offer has been extended until September 30, 2012.