The cheapest way to travel within Tokyo in 2026 is by using a combination of discount day passes and an IC card (Suica or Pasmo). For heavy sightseeing, the Tokyo Subway Ticket is the best value, offering unlimited rides on all Tokyo Metro and Toei Subway lines for 24 hours (¥800), 48 hours (¥1,200), or 72 hours (¥1,500)—which works out to as little as $3.50 per day. For shorter trips or routes involving JR lines (like the Yamanote loop), using a pre-paid IC card is the most cost-effective as it calculates the exact fare to the yen, avoiding the "rounding up" of paper tickets. If you are on an extreme budget, Tokyo is a very walkable city between adjacent neighborhoods like Shibuya and Harajuku, or Ginza and Tsukiji. For late-night travel, avoid taxis at all costs as they are notoriously expensive; instead, ensure you catch the last train around midnight or wait in a 24-hour cafe until the first train at 5:00 AM. For longer distances within the city, local buses offer a flat fare of around ¥210 ($1.40), making them a cheaper alternative to some multi-line train transfers.