Road-plus-speedboat is the cheaper, faster-to-book route from Kalimarau Airport to Derawan — benchmarks include costs for taxi-plus-boat to Sangalaki that vary by season and operator, and packages from USD 281 per person, with a door-to-jetty time near three hours. A seaplane covers the same distance without any published fare; it is arranged and priced per charter, not sold off a rate card.
How Much Does the Road-and-Speedboat Route to Derawan Actually Cost?
There is no single “Berau to Derawan fare,” because operators bundle transport differently, but three published benchmarks give a usable range. Scuba Junkie’s Sangalaki package prices taxi plus boat, with rates confirmed only on a written quotation, a figure worth anchoring against since Sangalaki sits on the same speedboat network as Derawan and Maratua. Indonesia Juara’s Derawan itinerary, dated 5 August 2026 and updated 17 August 2026, starts from USD 281 per person, meeting travelers at Kalimarau Airport and running through the April–November season with a minimum of two travelers. A separate Open Trip Derawan package covering 3 days and 2 nights via Berau asks for an IDR 500,000 per-person deposit, last updated 29 April 2026, on top of the balance due closer to departure.
None of these figures is an official government tariff — they are prices individual tour operators publish for their own packages, and they can change by season, group size, and how much of the itinerary is bundled (meals, homestay, island-hopping days). Anyone quoting exact totals for a private trip should treat these three numbers as reference points, not guarantees.
How Long Does Each Leg of the Journey Actually Take?
The road segment from Kalimarau Airport to Tanjung Batu jetty runs roughly 2 to 2.5 hours by car, though one published itinerary allows up to 2.5 to 3 hours depending on traffic through Tanjung Redeb. From Tanjung Batu, a speedboat to Derawan itself takes about 30 minutes — the shortest hop in the whole network. Kakaban adds roughly another hour by boat from Tanjung Batu, while Maratua and Sangalaki sit about 2 hours out. Door to jetty for Derawan via this route totals close to 3 hours door-to-pier, not counting waiting time for a scheduled departure.
There is also a public-transport alternative that skips the road leg into Tanjung Batu. A public speedboat departs Tanjung Redeb pier around 10:00 and runs direct to Maratua in about 2.5 hours. A separate dive-travel source lists Tanjung Redeb harbour boats to Maratua, Sangalaki, or Kakaban at roughly 2 hours each, with a first departure at 08:00 and a last one at 16:00 — useful for anyone timing a same-day arrival instead of overnighting in Tanjung Redeb. Once on Derawan, reaching Kakaban by speedboat is a further hour, a detail worth factoring into any single-day jellyfish-lake plan.
What Would a Seaplane Charter Actually Change About the Trip?
A seaplane would, in theory, cut the road segment entirely and turn a multi-hour, multi-transfer journey into a single flight. In practice, the region’s air access is narrower than that promise suggests. Maratua is the only island in the group with an airstrip, and it is served only by Wings Air twice weekly — a fixed-wing scheduled service, not a seaplane. Derawan, Kakaban and Sangalaki have no airport at all and are reached only by boat.
Green Nirvana Resort describes the archipelago as reachable “by boat or small airplane” after landing at Kalimarau, which confirms small-aircraft arrivals happen in some form, but no source names a seaplane operator, a designated water-landing site, a water aerodrome, or a specific regulation covering water landings in East Kalimantan. No government priority status for water-landing operations in this region is documented as of September 2026. Any seaplane movement into Derawan waters would be subject to operator approval, aviation authority permits, and prevailing conditions on the day — not a scheduled, ticketed service the way the Tanjung Redeb speedboats are. For a full breakdown of what a private flight would run, see the seaplane charter cost per person, which is quoted per trip rather than published as a fixed rate, since no seaplane fare, per-hour charge, fuel surcharge, or landing fee for Berau to Derawan appears in any public source.
How Do Costs Compare Per Person as Group Size Grows?
Group size changes the math differently for a shared boat network versus a chartered aircraft. Road and speedboat transfers are usually priced per seat, so the per-person cost stays close to the published benchmark whether one traveler books or six. A charter, by contrast, is typically priced as a fixed cost for the whole aircraft or vessel, so the per-person rate falls sharply as more travelers split that fixed number.
| Group size | Road + speedboat cost logic | Seaplane / private charter cost logic |
|---|---|---|
| Solo traveler | Pays close to full per-seat fare, in the range suggested by Scuba Junkie’s taxi-plus-boat benchmark, which varies by season and operator. | Absorbs the full quoted charter rate alone — request a solo-passenger quote before assuming any figure |
| 2 travelers | Fits the minimum-two structure used by packages like Indonesia Juara’s USD 281 per person Derawan trip | Fixed charter cost is split two ways; still quote-on-request since no published per-seat rate exists |
| 4–6 travelers | Per-person road and boat cost stays roughly flat, since transfers are usually sold per seat rather than per vehicle | Fixed aircraft or vessel charter cost spreads across more seats, so per-person price drops fastest here — the larger the group, the closer a charter’s economics move toward shared-transfer pricing |
This is a cost-logic comparison, not a price list: none of the operators researched publish a seaplane per-seat rate, so any specific figure for a private flight should come directly from a quote rather than from extrapolating the table above.
What Else Differs Beyond Price — Comfort, Baggage and Weather?
Money is only part of the decision. Road and speedboat travel means real exposure to weather on the open-water legs, standard vehicle and deck baggage handling, and departure windows tied to either a private transfer’s schedule or the public boats’ 08:00–16:00 window from Tanjung Redeb. A charter changes those trade-offs, but not necessarily in every direction a traveler might assume.
| Factor | Road + speedboat | Seaplane / air charter |
|---|---|---|
| Total transfer time | About 3 hours door to jetty for Derawan (2–2.5h road, ~30 min boat); up to 2.5h direct by public boat from Tanjung Redeb to Maratua | Not publicly timetabled for this route; total time would depend on flight duration plus any onward boat or dock connection, since no scheduled seaplane service is documented |
| Baggage handling | Standard vehicle boot plus open speedboat deck; dive bags and camera cases generally travel without special limits | Charter aircraft typically apply weight and size limits; confirm exact allowances directly with the operator when requesting a quote |
| Weather exposure | Speedboat legs of 30 minutes to 2 hours cross open water and can be delayed or rerouted around swell, especially outside the April–November season referenced by Indonesia Juara’s itinerary | Any water landing near Derawan would be subject to operator approval, aviation authority permits and conditions on the day, not a guaranteed daily service |
| Departure flexibility | Public boats run a fixed 08:00–16:00 window from Tanjung Redeb; private taxi-and-boat transfers can be arranged on demand | No fixed schedule exists publicly for this route as of September 2026; timing sits entirely within a private charter arrangement |
Which Option Actually Fits a Given Trip?
Divers and photographers on a budget, or anyone traveling solo or in a pair, get the most predictable value from the road-and-speedboat route: the per-seat pricing model keeps costs close to published benchmarks, and the public boat schedule out of Tanjung Redeb offers a fallback if a private transfer falls through. Groups of four or more start to see the charter math work harder in their favor, since a fixed aircraft or vessel cost divides further with each added traveler — though that only holds once an actual quote is in hand, since no seaplane rate card exists for this route.
Travelers on a tight arrival window, or those combining Derawan with other East Kalimantan legs in a single day, are the ones most likely to find a charter’s flexibility worth requesting a quote for, even without air access replacing the boat entirely on islands like Kakaban and Sangalaki. Either way, the road-and-speedboat network remains the only documented, schedule-based way to reach every island in the group — Maratua’s twice-weekly Wings Air flights aside — while any seaplane component stays a bespoke, quote-on-request addition rather than a fixed alternative.
Frequently Asked Questions
Is the public speedboat from Tanjung Redeb cheaper than booking a private taxi-and-boat transfer?
Public boats from Tanjung Redeb pier, running roughly 08:00 to 16:00 with a direct Maratua departure around 10:00, are generally the lower-cost option since they are shared services rather than dedicated transfers. A private taxi-and-boat combination, closer to the benchmark confirmed only on a written quotation Scuba Junkie quotes for Sangalaki, trades that lower shared fare for a fixed departure time and door pickup.
Can part of a Derawan trip use a seaplane while the rest stays on the boat network?
In principle a charter could cover one leg while speedboats handle inter-island transfers, since Kakaban, Sangalaki and Derawan have no airstrips of their own and require boat access regardless. No documented seaplane operator or water-landing site currently serves this combination, so any mixed itinerary would need to be built and quoted directly with a charter provider rather than booked as a package.
Why isn’t there a fixed seaplane price to compare directly against the speedboat fare?
No source publishes a seaplane charter rate, per-hour fee, fuel surcharge or landing fee for the Berau-to-Derawan route as of September 2026, and no designated water aerodrome or government water-landing scheme is documented for the area either. Every seaplane figure for this route is necessarily quote-on-request, arranged case by case with a licensed operator rather than sold at a published rate.