Question 1

How popular is this Hanoi to Siem Reap flight route?

Accepted Answer

Flights from Hanoi Noibai to Siem Reap–Angkor Intl have been viewed 6 times in the past calendar month.

Question 2

How far ahead should I book a flight from Hanoi to Siem Reap?

Accepted Answer

To ensure you get the cheapest price possible for a flight from Hanoi to Siem Reap, you should look to book at least 29 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Question 3

What is the cheapest day to fly from Hanoi to Siem Reap?

Accepted Answer

Travelers seeking maximum savings on their Hanoi to Siem Reap flight should consider departing on Saturday afternoons when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 4

Weekly flight availability from Hanoi to Siem Reap

Accepted Answer

The most flights from HAN to SAI are scheduled on a Tuesday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

Question 5

E

Accepted Answer

In terms of precipitation, rainfall in Siem Reap ranges from 0.0 - 10.2 inches per month. September is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Siem Reap when rainfall is around 0.0 in.

Question 6

E

Accepted Answer

If weather is an important factor for your trip to Siem Reap, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 75.2 F).

Question 7

What are the most popular airlines that fly from Hanoi to Siem Reap?

Accepted Answer

The most popular airlines flying from Hanoi to Siem Reap are Cambodia Angkor Air, VietJet Air and Vietnam Airlines. Something to consider prior to booking your flight.

Question 8

What is the cheapest day to fly round-trip from Hanoi to Siem Reap?

Accepted Answer

Friday is generally a great day to depart. Flying on this day could help you save up to 35%.

Question 9

How far in advance should I book a flight from Hanoi to Siem Reap?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 30 days in advance, which can save you up to 31% on flights from Hanoi to Siem Reap compared to booking the week you need them. Waiting 30 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $145. For sooner than that we have options available in the next 3 days from $199.

Question 10

What is the cheapest month to fly from Hanoi to Siem Reap?

Accepted Answer

Due to multiple factors, expect to potentially pay more when booking in April. For low rates, June can be a great choice for travel to Siem Reap. Flights to Siem Reap from Hanoi in June are about $203 on average during June, but can be found for as low as $128.

Question 11

What is the cheapest time of day to fly from HAN to SAI?

Accepted Answer

A simple way to save on the total cost of your ticket is to fly from Hanoi to Siem Reap in the morning. If you’re flexible enough to do this you can expect to save up to 5% on your trip compared to booking a flight at noon.

Question 12

Can I find deals for flights from Hanoi to Siem Reap that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Hanoi to Siem Reap flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 13

How can I find direct flights from Hanoi to Siem Reap?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hanoi to Siem Reap.

Question 14

Can I find deals for business class flights from Hanoi to Siem Reap?

Accepted Answer

Yes. Cheapflights offers flight deals from Hanoi to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Popular in	April
Cheapest in	June
Average price	$181

Airline	Cheapest	Average	Flexibility	On-time
VietJet Air	Cheapest$134	Average$200	FlexibilityNo cancel fee	On-timeN/A
Vietnam Airlines	Cheapest$181	Average$206	FlexibilityNo cancel fee	On-time81%
Cambodia Angkor Air	Cheapest$182	Average$225	FlexibilityNo cancel fee	On-timeN/A

Find cheap flights from Hanoi to Siem Reap with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Hanoi Noibai to Siem Reap–Angkor Intl are usually found in June or July, booked 29 days in advance, depart on a Saturday or Sunday and return on a Thursday

Cheap flight deals from Hanoi to Siem Reap

Popular in

Cheapest in

Average price

Best time to book a flight from Hanoi to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Hanoi with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Hanoi to Siem Reap

How far ahead should I book a flight from Hanoi to Siem Reap?

Use this chart to determine the optimal time to book a round-trip flight from Hanoi to Siem Reap. Price data was last updated on July 25, 2025.

What is the cheapest time of day to fly from HAN to SAI?

Find hourly flight availability from Hanoi to Siem Reap. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

Weekly flight availability from Hanoi to Siem Reap

Explore weekly flight availability from Hanoi to Siem Reap. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 29, 2025.

Related info for your journey

Find useful and relevant information for your journey from Hanoi to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How popular is this Hanoi to Siem Reap flight route?

Can I find deals for flights from Hanoi to Siem Reap that include hotel bookings?

How can I find direct flights from Hanoi to Siem Reap?

Can I find deals for business class flights from Hanoi to Siem Reap?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Siem Reap by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Hanoi to Siem Reap by cabin class

Find flights from Hanoi to Siem Reap, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hanoi and Siem Reap flights

Browse other Hanoi and Siem Reap flight options. Last updated on July 29, 2025.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2025

Top 3 airlines flying from Hanoi to Siem Reap

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Cheap flights from Hanoi (HAN) to Siem Reap, Cambodia (SAI)

Find cheap flights from Hanoi to Siem Reap with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Hanoi Noibai to Siem Reap–Angkor Intl are usually found in June or July, booked 29 days in advance, depart on a Saturday or Sunday and return on a Thursday

Cheap flight deals from Hanoi to Siem Reap

Popular in

Cheapest in

Average price

Best time to book a flight from Hanoi to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Hanoi with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Hanoi to Siem Reap

How far ahead should I book a flight from Hanoi to Siem Reap?

Use this chart to determine the optimal time to book a round-trip flight from Hanoi to Siem Reap. Price data was last updated on July 25, 2025.

What is the cheapest time of day to fly from HAN to SAI?

Find hourly flight availability from Hanoi to Siem Reap. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

Weekly flight availability from Hanoi to Siem Reap

Explore weekly flight availability from Hanoi to Siem Reap. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 29, 2025.

Related info for your journey

Find useful and relevant information for your journey from Hanoi to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How popular is this Hanoi to Siem Reap flight route?

Can I find deals for flights from Hanoi to Siem Reap that include hotel bookings?

How can I find direct flights from Hanoi to Siem Reap?

Can I find deals for business class flights from Hanoi to Siem Reap?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Siem Reap by adding a car rental and/or hotel reservation to your travel itinerary.

Top 3 airlines flying from Hanoi to Siem Reap

100% Free

Book with Flexibility

Travel Smart