One direction, not a loop
A day trip goes out and comes back. A transfer takes you from where you are to where you are going, and works a manta stop into the line.

Charters · Transfers
Staying on Kanawa, Kelor, Sebayur or Siaba? A transfer between islands can carry a manta stop, so you never backtrack to Labuan Bajo to join a day trip.
Ask for a quoteA speedboat leg between resort islands with a Manta Point stop attached. It saves guests already in the park from a return trip to the harbour just to start a tour.
At a glance
Figures that hold across operators. Prices move, so ask rather than trust a blog.
No operator publishes exact island-to-island sailing times, and inventing them would be worse than saying so. Ask your specific operator for that leg.
What you get
It is a crossing with a stop, not a tour with a route.
A day trip goes out and comes back. A transfer takes you from where you are to where you are going, and works a manta stop into the line.
Because it is a private leg, the stop can be timed for midday light rather than fitted around a shared schedule.
You are checking out of one place and into another. Confirm the boat has dry storage — a speedboat deck is not the place for a suitcase.
Entering the park is entering the park. If your transfer includes a manta stop, you need the SiOra booking exactly as a day trip would.
Route
Starts from
Luggage
Priced
Suits
If you are based in Labuan Bajo, book a day trip. The transfer only makes sense when you are already inside the park and moving anyway.
Which island, which day, and where you are going next. The route falls out of that.