It's normal that Groupon offers 20% off local deals, but 25% doesn't happen too often at all, so I thought I'd pass it along. The deal is until Thursday for up to 3 local deals. Use promo code FLY25.
Of course, a local deal is a deal that isn't national, so if you're going on vacation, to say, NYC, type in NYC to the city of choice and start searching for deals for your upcoming vacation!
If you've never used EBates, it's a cashback service that will deposit into your PayPal account a percentage of whatever the cost was that you paid if you use their website to be redirected to another, such as Groupon. Currently, they're also offering more than normal, with 9% cashback!
Click here to go to EBates. Then, click on the Groupon logo near the top of the page or type in Groupon in the search bar. You'll be asked to sign up if you haven't used EBates before--and always use EBates.com since they'll pay you in US$.