Receive 20,000 bonus points, which gets you around $200 towards airfare, when you sign up for the PenFed Premium Travel Card by American Express and spend $650 within 3 months. You'll get a whopping 5 points per dollar spent on airfare at any airline, and 1 point per dollar on everything else. Spend $15,000 a year, and you'll also get free club membership at over 600 airport lounges. Plus, there's no annual fee and no foreign transaction fees. You must be a member of the Pentagon Federal Credit Union to qualify: this means military members, government employees, and family members, or sign up for a qualifying organization like the Red Cross or National Military Family Association (which requires only a one-time $20 donation to join).