No, there are no Komodo day trips from Bali or Lombok. The distance is far too great, and it is impossible to reach Komodo National Park and return in a single day. Even the fastest speedboats would take many hours each way, and the sea conditions between the islands can be rough. Because of this, no responsible operator offers day tours from Bali or Lombok.
All proper Komodo day trips start in Labuan Bajo, which is only a short distance from the national park. Travellers coming from Bali or Lombok must fly into Labuan Bajo first, then join a boat tour from the harbour. This is the only realistic and safe way to visit Komodo on a one day schedule.
Some travellers try to find Bali based or Lombok based packages online, but these always involve a flight plus a day trip from Labuan Bajo, not a direct boat. If you want to visit Komodo, the simplest approach is to fly in the day before, stay one night in Labuan Bajo, and take your tour the next morning.
