In 2026, the Capital One Travel portal functions as a comprehensive booking engine (powered by Hopper) that works with nearly every major global airline, including American, Delta, United, British Airways, and Lufthansa. However, the real power of Capital One in 2026 lies in its Transfer Partners. You can transfer your Venture or Spark miles at a 1:1 ratio to a diverse list of 15+ airline loyalty programs. Key partners include Air Canada (Aeroplan), Avianca (LifeMiles), British Airways (Avios), Singapore Airlines (KrisFlyer), Turkish Airlines (Miles&Smiles), and Virgin Atlantic. This allows you to book flights on any alliance member (Star Alliance, Oneworld, or SkyTeam). For example, by transferring to Aeroplan, you can book United flights; by transferring to British Airways, you can book American Airlines flights. This flexibility makes Capital One one of the most versatile travel currencies in 2026, bridging the gap between direct portal bookings and high-value award redemptions across almost all international carriers.