A 2027 Derawan-to-Maratua corridor trip works best when you stop planning it as four separate island hops and start planning it as one loop out of Kalimarau Airport (BEJ) in Berau. Road and speedboat cover most of the route reliably; Wings Air’s twice-weekly flight is the only scheduled air leg, reaching Maratua alone; everything else — Derawan, Kakaban, Sangalaki — is boat-only, so the corridor’s shape is set by jetty timetables and daylight, not by flight schedules.
Why treat Derawan, Maratua, Kakaban and Sangalaki as one corridor?
Kalimarau Airport sits in Teluk Bayur district, Berau Regency, East Kalimantan, and is the documented gateway to this island group — a 2019 Liputan6 report already called it the tourism gateway to Derawan, Maratua, Kakaban and Sangalaki. Travelers arrive on domestic connections through Balikpapan or Tarakan, land at BEJ, then move overland to Tanjung Batu, the jetty most itineraries use for speedboats into the archipelago. From there, every island is reachable within a few hours, which is what makes a multi-island loop realistic inside a 3- to 5-day window rather than a single-island stopover.
The four islands also complement each other rather than compete: Kakaban’s landlocked lake holds four species of non-stinging jellyfish around Kehe Daing Lagoon, Maratua carries Dolphin Point, a resident turtle site and the Halo Tabung Cave and Blue Lagoon, Sangalaki is built around Manta Ray Point and a turtle conservation centre, and Gusung rounds out the group as a fifth stop on longer island-hopping routes. Treating them as one corridor means sequencing these strengths instead of squeezing all of them into one rushed day.
Which legs suit boat, and which need to fly?
Maratua is the only island in the group with an airstrip, and as of September 2026, subject to change, it is served only by Wings Air twice weekly — a real but limited air option that needs to be booked around, not assumed available on demand. Derawan, Kakaban and Sangalaki have no airport at all and are always reached by boat, which is the part of the corridor that has the most flexibility because speedboats run daily rather than twice a week.
Some resorts describe the wider archipelago as reachable “by boat or small airplane” once you land at BEJ, which confirms small-aircraft arrivals happen in practice. No source, however, names a seaplane operator, a designated water-landing site, a water aerodrome or any government-confirmed priority status for water landings in East Kalimantan. Any air-charter leg into this corridor should be treated as subject to operator approval, authority permits and case-by-case conditions rather than a fixed schedule — which is exactly why a Derawan private seaplane leg is arranged as a quoted, on-request option rather than something you can slot into a printed itinerary the way you would a scheduled flight.
Road transfer from Kalimarau to Tanjung Batu runs about 2 to 2.5 hours, with one itinerary quoting 2.5 to 3 hours depending on traffic and vehicle type. From there, speedboat to Derawan takes roughly 30 minutes, to Kakaban about 1 hour, and to Maratua or Sangalaki about 2 hours. Door-to-jetty timing for Derawan via Berau totals roughly 3 hours end to end, which is the baseline every corridor plan should build around.
How much daylight do you actually have between islands?
Speedboat timetables in this region are short-window and morning-heavy, so a corridor itinerary lives or dies on how well it respects departure times rather than distances. A public speedboat leaves Tanjung Redeb pier around 10:00 direct to Maratua, arriving in about 2.5 hours. Separately, one dive-travel source lists Tanjung Redeb harbour boats to Maratua, Sangalaki or Kakaban departing as early as 08:00 with a last departure at 16:00, giving roughly an 8-hour operating window per day for inter-island movement. Derawan to Kakaban by speedboat is about 1 hour, which is short enough to fit as a half-day excursion rather than a full relocation day.
The practical planning takeaway: build inter-island transfers into the morning or early afternoon, never the last available slot, and keep resort check-in and check-out on the same side of a transfer day rather than stacking two moves into one day. Boats run on operator schedules and sea conditions, not on-demand, so a missed 16:00 departure usually means an overnight delay, not a later boat.
What does a 3-day corridor loop look like?
A short loop works best anchored on Derawan, with Kakaban as a half-day add-on and Maratua reserved only if the Wings Air schedule or a private transfer aligns.
| Day | Route | Transfer | Focus |
|---|---|---|---|
| Day 1 | BEJ to Tanjung Batu to Derawan | Road ~2–2.5 hrs, then boat ~30 min | Arrival, resort check-in, reef orientation |
| Day 2 | Derawan to Kakaban and back | Boat ~1 hr each way | Jellyfish lake, Kehe Daing Lagoon, return to Derawan for the night |
| Day 3 | Derawan to Tanjung Batu to BEJ | Boat ~30 min, then road ~2–2.5 hrs | Morning dive or beach time, afternoon departure |
What does a 5-day corridor loop look like?
A longer loop adds Maratua and Sangalaki, but only makes sense once the Wings Air twice-weekly schedule or a private air/boat combination is confirmed, since those two islands sit roughly 2 hours from Tanjung Batu by boat.
| Day | Route | Transfer | Focus |
|---|---|---|---|
| Day 1 | BEJ to Tanjung Batu to Derawan | Road ~2–2.5 hrs, then boat ~30 min | Arrival, reef check-in |
| Day 2 | Derawan to Sangalaki | Boat ~2 hrs | Manta Ray Point, turtle conservation centre |
| Day 3 | Sangalaki to Maratua | Boat transfer between islands | Dolphin Point, turtle site, Blue Lagoon |
| Day 4 | Maratua to Kakaban to Derawan | Boat legs within the ~08:00–16:00 window | Jellyfish lake, return to base island |
| Day 5 | Derawan to Tanjung Batu to BEJ | Boat ~30 min, then road ~2–2.5 hrs | Departure |
Both routings deliberately leave the last day free of new water activity so a delayed boat or a full-day charter doesn’t collide with a flight check-in at BEJ.
What should you reserve early for a 2027 corridor trip?
- Wings Air seats to Maratua — twice-weekly frequency means the flight, not the boat, is usually the binding constraint on a corridor that includes Maratua by air.
- Resort transfer slots — several island resorts run their own jetty pickups on fixed windows tied to the 08:00–16:00 boat schedule, so late confirmation risks a same-day mismatch.
- Deposits on open-trip or private packages — one Open Trip Derawan 3D2N via Berau itinerary lists a deposit of IDR 500,000 per person as of its April 2026 update, a useful benchmark for how far ahead these bookings lock in.
- Any private air leg on the Berau-to-Derawan sector — no seaplane charter price, hourly rate or landing fee for this route is verified anywhere as of September 2026, so treat it as quote-on-request and confirm timing separately from the boat-based days of the itinerary.
- Whale shark and manta expectations — sightings around this corridor are seasonal and operator-reported, never guaranteed, so build flexible half-days rather than fixed appointments around them.
None of this corridor planning assumes a confirmed 2027 seaplane timetable or a formal water-landing scheme for East Kalimantan — no public source documents either as of September 2026. Treat any 2027 air-inclusive itinerary as a planning scenario to hold provisionally, not a booked route, until an operator confirms specific dates in writing.
Frequently Asked Questions
Is it possible to visit Derawan, Maratua and Kakaban in one trip without an overnight on each island?
Yes, but only with careful timing. Kakaban is a realistic day trip from Derawan at about 1 hour each way by speedboat, while Maratua requires either the twice-weekly Wings Air flight or a longer boat transfer, so a single-base itinerary on Derawan with day excursions is the most reliable structure for shorter stays.
Do I need a different visa or entry process to reach this corridor compared with the rest of Indonesia?
No separate visa track applies specifically to Berau or the Derawan corridor. General Indonesian entry options such as e-VOA, B211A, the E33 Second Home visa and the E33G remote-worker visa apply the same way as elsewhere in the country; check current requirements directly with Indonesian immigration before booking, since this is general context, not visa advice.
What happens if I miss the last speedboat departure between islands?
Public inter-island boats reportedly run on a roughly 08:00 to 16:00 window at Tanjung Redeb harbour, so missing the last slot typically means waiting for the next scheduled departure rather than finding an immediate alternative. Building a buffer day into a corridor itinerary, or confirming private transfer options in advance, reduces the risk of a missed connection disrupting a flight at Kalimarau Airport.