How to Get From Siem Reap to Sihanoukville
Linking the temples of Angkor to the southern coast and islands is one of Cambodia's longest domestic journeys — roughly 450 km. There is no direct flight on most schedules, so travellers either connect via Phnom Penh by air or take a long direct bus.
Our Recommendation
If time matters, fly Siem Reap–Phnom Penh and continue by expressway bus (or a Phnom Penh connection). Otherwise, a direct night bus saves a day but is tiring.
🚀 All Transport Options
✈️ Flight (via Phnom Penh)
Duration
~4–5 hours total
Cost
$70–$140
Frequency
Daily connections
Most air routings connect through Phnom Penh (Techo). From Phnom Penh, the expressway bus reaches Sihanoukville in about 4 hours. Check current schedules for any seasonal direct service.
Insider Tips
- •Book the SR–PP leg early
- •Allow time for the airport transfers
- •Consider an overnight in Phnom Penh
🚌 Direct Night Bus
Duration
10–12 hours
Cost
$18–$28
Frequency
Daily (evening departures)
Vireak Buntham and others run sleeper/night buses directly. It is long, but saves a day and a night's accommodation.
Insider Tips
- •Sleeper buses have flat-ish berths
- •Bring warm layers and earplugs
- •Secure your valuables while sleeping
🚐 Bus/Van via Phnom Penh
Duration
10–12 hours
Cost
$15–$30
Frequency
Daily
Break the trip in Phnom Penh: SR→PP (~6 hrs) then the PP→Sihanoukville expressway bus (~4 hrs). More flexible than the direct night bus.
Insider Tips
- •A Phnom Penh overnight breaks up the journey
- •The PP–Sihanoukville expressway is fast and smooth
📊 Quick Comparison
| Option | Duration | Cost | Comfort |
|---|---|---|---|
| ✈️ Flight (via Phnom Penh) | ~4–5 hours total | $70–$140 | premium |
| 🚌 Direct Night Bus | 10–12 hours | $18–$28 | moderate |
| 🚐 Bus/Van via Phnom Penh | 10–12 hours | $15–$30 | moderate |
❓ Frequently Asked Questions
Is there a direct flight from Siem Reap to Sihanoukville?
Not on most schedules — air travel usually connects through Phnom Penh (Techo). Check with airlines for any seasonal direct service.
How long is the bus from Siem Reap to Sihanoukville?
Direct night buses take about 10–12 hours over the ~450 km. Many travellers break the trip in Phnom Penh instead.
🔗 Related Routes
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