Sign up right now for the Barclaycard Arrival Plus World Elite MasterCard and you'll get 40,000 bonus miles when you spend $3,000 in the first 90 days. This gets you $400 to use towards any travel expenses! This card was awarded one of Money's "Best Credit Cards 2013-2014". You'll earn 2x miles on all purchases, and get 10% of your miles back when you redeem them for travel. The means you'll not only get the 40,000 miles, but also 6,000 miles for making your $3000 purchase, and another 4,600 back when you redeem them, making this one of the best bonus mileage offers we've seen. There's an $89 annual fee but it's waived the first year. Click here for more details. See our ranking of the top 5 credit card signup bonuses for additional options.