Prices genuinely overlap, the decision is about experience, not cost
Shared 4 Island Tour prices genuinely overlap between longtail (roughly 600 to 1,200 THB) and speedboat (roughly 900 to 1,200 THB) per person, the common assumption that longtail is always cheaper isn't quite true on current booking platforms. The real decision is about experience, not cost. Here's the full breakdown.
Not consistently the budget option it's assumed to be
Almost every Krabi island tour is sold in both longtail and speedboat versions, and travellers often assume longtail is the budget option, speedboat the premium one. On actual booking platforms, that's not consistently what the prices show, shared-tour fares for both genuinely overlap in range. One direct comparison found longtail at ฿850 per person and speedboat at ฿1,100 per person for the same tour, a difference of just ฿250, "roughly the cost of a Chang beer."
Faster, more time on the islands, better in rougher water
| Longtail Boat | Speedboat | |
|---|---|---|
| Cruising speed | 25–30 km/h | 50–70 km/h |
| Passenger capacity | 8–12 | 15–30 |
| Travel time between islands | 30–45 minutes | 10–15 minutes |
| Total tour duration | ~6–7 hours | ~6 hours |
| Time actually spent on islands | Less | More |
| Shared tour price (per person) | ~600–900 THB (RM77–115) | ~900–1,200 THB (RM115–153) |
| Comfort in rough/choppy water | Side-to-side sway, wetter | Vertical bounce, but higher hull |
| Reaches shallow lagoons/beach landings directly | Yes | Not always, deeper hull |
| Authentic Thai photo experience | Yes | Less so |
| Best for seasickness-prone travellers | No | Yes |
Sourced from thailandactivitytickets.com, thailandlongtail.com, and krabiboat.tours. RM figures are approximate conversions and will shift with the exchange rate.
Big Tour Viago's 4 Islands by Longtail Boat runs 649 THB adult (discounted from 1,199 THB) and 549 THB child, with pickup 8:00 to 8:30am and return by 4:00pm, a genuinely specific, real pricing example worth comparing against whatever speedboat option you're considering.
Splitting a larger boat across more people can undercut expectations
Private longtail charters start around 2,500 to 4,000 THB for a half-day, covering up to 8 people. Private speedboats start around 8,500 to 12,500 THB for a half-day, but cover 20 to 25 people. Split across a larger group, the speedboat can actually work out cheaper per person, one detailed example calculated a speedboat at 8,500 THB split between 8 travellers landing at roughly 1,062 THB each, genuinely competitive with, or cheaper than, the equivalent longtail split.
Match the boat to your priorities, not an assumption about price
Choose speedboat if: you want more time actually spent on the islands rather than travelling between them, you're travelling with young kids, or you're prone to seasickness, the higher hull and covered seating handle rougher water better.
Choose longtail if: you want the authentic Thai boat experience and iconic photos, prefer a slower, more scenic pace, or specifically want direct access to shallow lagoons and beach landings that a speedboat's deeper hull can't always reach.
Compare the actual per-person price difference before assuming longtail is automatically cheaper, given how much prices overlap, check the specific tour you're considering rather than assuming based on boat type alone.
Do the per-person math on private charters if you're travelling in a larger group, splitting a speedboat charter across more people can genuinely undercut a longtail private charter once you account for capacity differences.
Choose speedboat specifically if seasickness or young kids are a factor, the faster crossing and better handling in choppier water make a real difference for these situations.
Book with reasonable advance notice during peak season (November to April), popular island tours can fill up given how many travellers want to visit the same 4 islands.