Yes, you can move between Terminal 1 and Terminal 2 at almost every major international airport, though the method varies by location. At London Heathrow (LHR), T2 and T3 are within a short walking distance via underground pedestrian walkways, while reaching T4 or T5 requires a free shuttle train. At New York (JFK) in 2026, the AirTrain is the mandatory "bridge" between terminals; while T1 and T2 are physically near each other, there are no designated sidewalks, making the AirTrain the only safe and efficient 2-minute hop. At Singapore Changi (SIN), T1, T2, and T3 are seamlessly connected by the Skytrain and pedestrian linkways, allowing for a 5-to-10 minute transit. For 2026 travelers, the general rule is to follow the "Terminal Transfer" signs; if you are staying "airside" (inside security), you usually use a shuttle bus or train, but if you have to re-check bags, you may need to clear customs and take the "landside" transit options.