Find the cheapest flights from Siem Reap to Phnom Penh in 2026. Compare airlines, prices by month, and booking tips to save on your trip.
Route: Siem Reap (SAI) → Phnom Penh (PNH)
Distance: Direct flights not available
Flight Duration: 2h 30m – 4h 30m
Prices by Month
| Month | Avg Price | Demand |
|---|---|---|
| January | €95 | high |
| February | €88 | high |
| March | €82 | medium |
| April | €75 | medium |
| May | €62 | low |
| June | €55 | low |
| July | €58 | low |
| August | €52 | low |
| September | €55 | low |
| October | €68 | medium |
| November | €78 | medium |
| December | €105 | high |
Airlines on This Route
- Cambodia Angkor Air (direct): from €55 — Book directly on their website for the best rates. They often have promotional fares 2-3 weeks before departure.
- Cambodia Airways (direct): from €50 — Check their app for flash sales. They frequently offer discounted seats on Tuesday-Thursday flights.
- Bangkok Airways (connecting): from €120 — Best booked through Skyscanner to compare. Allows stopover in Bangkok if you want to break up journey.
- Thai Airways (connecting): from €140 — Better for those wanting to continue to other Thai destinations from Phnom Penh.
Booking Strategy
For Siem Reap to Phnom Penh flights, the sweet spot is booking 2-4 weeks before travel. Direct flights with Cambodia Angkor Air or Cambodia Airways typically cost €50-80, making the €300 base price the upper end for last-minute or peak season bookings. August offers the cheapest fares at around €52 average, while December peaks at €105. Tuesdays and Wednesdays are consistently the cheapest days to fly, with savings of 15-25% compared to Friday-Sunday. Use Google Flights or Skyscanner to track price trends — both airlines release seats in batches, so checking daily for 2-3 weeks before your travel date often yields the best deals. Avoid booking through third-party sites for this route; Cambodia Angkor Air and Cambodia Airways both offer better prices on their own websites, and you’ll have more flexibility for changes.
Route Tips
- Siem Reap’s new international airport (SAI) opened in late 2023 — ensure you book transfers to the correct airport as the old airport (PSA) is now closed for commercial flights.
- Both Cambodia Angkor Air and Cambodia Airways check-in counters are in the same terminal at Siem Reap — arrive 90 minutes before your flight despite short security lines.
- If holding a visa on arrival, have $30 USD ready in cash (exact amount preferred) plus one passport photo — photo services at PNH charge $5 for instant photos.
- Cambodia allows 30-day tourist visas on arrival for most nationalities — check embassy requirements if your nationality isn’t on the visa-exempt list.
- Consider the bus alternative (Giant Ibis, Capitol Tours) at $15-18 for 6 hours if you’re on a very tight budget and have time — it’s comfortable but slow compared to the 50-minute flight.
Frequently Asked Questions
How long is the flight from Siem Reap to Phnom Penh?
The direct flight takes approximately 50 minutes. Cambodia Angkor Air and Cambodia Airways operate several daily direct flights between Siem Reap (SAI) and Phnom Penh (PNH). If booking a connecting flight via Bangkok, expect a total journey time of 2.5 to 4.5 hours depending on layover duration. Most travelers opt for direct flights given the short 230km distance between the two cities, making flying far more time-efficient than the 6-hour bus journey.
How much does it cost to fly from Siem Reap to Phnom Penh?
Direct flights typically cost €50-80 (40,000-65,000 KHR) when booked in advance. Cambodia Airways often undercuts Cambodia Angkor Air by €5-15. Connecting flights via Bangkok start around €120 but are only practical if you want to break up travel or continue to Thailand. Peak season (November-February) sees prices rise to €90-110, while low season (May-September) offers the best deals at €50-60. The €300 base price reflects last-minute bookings during peak December or premium cabin fares.
Are there direct flights from Siem Reap to Phnom Penh?
Yes, direct flights are available and are the preferred option for this route. Cambodia Angkor Air operates 2-3 daily flights, while Cambodia Airways runs 1-2 daily services. Flight time is just 50 minutes. No other airlines offer non-stop service on this domestic route. If you cannot find direct flights, connecting options via Bangkok (Bangkok Airways, Thai Airways) are available but add significant time and cost.
What is the cheapest month to fly from Siem Reap to Phnom Penh?
August is the cheapest month with average fares of €52, falling within Cambodia’s low season when monsoon rains reduce tourist numbers. May, June, September, and October also offer excellent value at €55-68. The most expensive period is December (€105 average) during peak holiday season, followed by January-February (€88-95) when dry, cool weather attracts tourists. If flexibility is possible, aim for late May or September for the best balance of low prices and decent weather.
Which airlines fly from Siem Reap to Phnom Penh?
Two airlines operate direct flights: Cambodia Angkor Air (national carrier with 2-3 daily flights, prices from €55) and Cambodia Airways (1-2 daily flights, prices from €50). Both offer similar service and safety standards. For connecting options, Bangkok Airways and Thai Airways serve the route via Bangkok, ideal for those wanting a multi-city trip. Cambodia Angkor Air includes 20kg baggage on all fares, while Cambodia Airways has tiered baggage options — check carefully when booking basic economy.
What airport do I fly into in Phnom Penh?
You will arrive at Phnom Penh International Airport (PNH), located about 7km (4 miles) west of the city center. The airport is relatively small and efficient. Taxis to the city center cost $9-15 depending on negotiation or using an app like PassApp. Preferred hotels often provide free airport transfers — confirm when booking. Ride-hailing apps (Grab, PassApp, Lime) are widely available and cost $8-12 to most central hotels. The journey takes 20-30 minutes depending on traffic.
How far in advance should I book Siem Reap to Phnom Penh flights?
Book 2-4 weeks in advance for the best prices. Both Cambodia Angkor Air and Cambodia Airways release their cheapest seats about 3 weeks before departure, then gradually increase prices as seats fill. For peak season travel (December-January), booking 4-6 weeks ahead is safer. Last-minute bookings (within 3 days) can cost 2-3 times the advance price. Unlike major international routes, this domestic corridor rarely sees significant last-minute drops.
Is it cheaper to fly from Siem Reap to Phnom Penh on weekdays?
Yes, Tuesday and Wednesday are typically the cheapest days to fly, with fares 15-25% lower than weekend prices. Friday and Sunday flights command premium prices, especially for afternoon departures. Monday falls in the middle range. If your schedule is flexible, shifting a weekend trip to midweek can save €10-20 per ticket. This pattern holds consistently across both Cambodia Angkor Air and Cambodia Airways.
Data updated: 2026-03
