And people who make purchases on the site through Nov. 30 will earn eight bonus points for every dollar spent.

WSJ: Card Issuers Reward Purchases

Bonus: Hipmunk did an API deal with Airbnb making it the only other site besides Airbnb to show Airbnb rentals, which are often a lot cheaper and more funky than hotel options.

FORBES: Why Hipmunk Is The World's Best Travel Site