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

SAI — HAN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Siem Reap–Angkor Intl to Hanoi Noibai are usually found in September or July, booked 22 days in advance, depart on a Monday or Thursday and return on a Saturday

Cheap flight deals from Siem Reap to Hanoi

Discover tips and strategies to find the most affordable flight options for your journey from Siem Reap (SAI) to Hanoi (HAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Popular in

January

Cheapest in

September

Average price

$126
Highest demand for flights based on searches. 18% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Best time to book a flight from Siem Reap to Hanoi

Have a flexible travel schedule? Discover the best time to fly to Hanoi from Siem Reap with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Siem Reap to Hanoi. Price data was last updated on September 12, 2025.

To ensure you get the cheapest price possible for a flight from Siem Reap to Hanoi, you should look to book at least 22 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.

What is the cheapest month to book a flight from Siem Reap to Hanoi?

Currently, September is the cheapest month in which you can book a flight from Siem Reap to Hanoi (average of $862). Flying from Siem Reap to Hanoi in December is currently the most expensive (average of $1,597). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Siem Reap to Hanoi. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

One of the essential ways to save on airfare from Siem Reap to Hanoi is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 57% on airfare.

Reviews of airlines servicing Hanoi

Get insights into the airlines that provide service to Hanoi. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Hanoi. Reviews last updated September 17, 2025.
Get a feel of what it's like to fly with VietJet Air from Siem Reap to Hanoi by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
VietJet Air
5.6
Fair
147 reviews

Comfort

5.3

Entertainment

4.0

Food

4.7

Boarding

6.0

Crew

6.6

Overall

5.6

Reviews

1 / 5
8.0
Excellent

xuan-anh,Aug 2025

SGN - SYD

The baggage check-in need lots of improvements, 80 minutes in the queue was ways too long! Staffs were good. Crew was very good, helpful and polite, excellent pilot. Food was regrettable! Entertainment was not an option, so customers should be warned to bring their own, which must be fully charged because it's not allowed to be charged during the flight.
VietJet Air
5.6
Fair
147 reviews
VietJet Air
5.6
Fair
147 reviews

Comfort

5.3

Entertainment

4.0

Food

4.7

Boarding

6.0

Crew

6.6

Overall

5.6

Reviews

1 / 5
8.0
Excellent

xuan-anh,Aug 2025

SGN - SYD

The baggage check-in need lots of improvements, 80 minutes in the queue was ways too long! Staffs were good. Crew was very good, helpful and polite, excellent pilot. Food was regrettable! Entertainment was not an option, so customers should be warned to bring their own, which must be fully charged because it's not allowed to be charged during the flight.

Related info for your journey

Find useful and relevant information for your journey from Siem Reap to Hanoi. 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 Siem Reap to Hanoi flight route?

    Within the past month, 7 users have taken a look at flights from Siem Reap–Angkor Intl to Hanoi Noibai.

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

    Cheapflights users have booked flights from Siem Reap to Hanoi round-trip from $121. VietJet Air is priced at 29% lower than the current average price of a flight leaving 3 months from now.

  • What are the most reliable airlines from Siem Reap to Hanoi?

    The top 3 most reliable airlines when flying from Siem Reap to Hanoi are VietJet Air (56%), Air France (44%) and Vietnam Airlines (44%).

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Siem Reap to Hanoi?

    Currently, September is the cheapest month in which you can book a flight from Siem Reap to Hanoi (average of $862). Flying from Siem Reap to Hanoi in December is currently the most expensive (average of $1,597). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Siem Reap to Hanoi

Discover the top airline that operate flights from Siem Reap to Hanoi. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
VietJet AirCheapest$121Average$171FlexibilityNo cancel feeOn-timeN/A

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