Technically, Capital One gives you "Miles" that function more like flexible travel credits, but they can be converted into "true" airline miles through their extensive list of transfer partners. As of 2026, if you hold a Venture, Venture X, or Spark Miles card, you earn a flat rate (usually 2x) on every dollar spent. These miles can be used in two ways: you can "erase" travel purchases from your statement at a value of 1 cent per mile, or you can transfer them to over 15 airline partners, including British Airways, Air Canada (Aeroplan), Emirates, and Singapore Airlines. In 2026, most transfers occur at a 1:1 ratio, meaning 50,000 Capital One miles become 50,000 Aeroplan points. This flexibility makes Capital One miles highly valuable because you aren't locked into a single airline’s loyalty program. However, Capital One does not have a "domestic" 1:1 transfer partner like United or Delta; instead, savvy travelers use their partners (like using British Airways Avios to book American Airlines flights) to maximize the value. In 2026, the "Venture X" remains the premier choice for "mile" earners, as it offers a 10,000-mile anniversary bonus and high-tier lounge access, effectively making it a "miles machine" for frequent travelers.