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Cheap flights from Siem Reap, Cambodia to Hanoi

SAI — HAN
18 Oct — 25 Oct1
1 adult
1 adult, Economy

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 Tuesday and return on a Wednesday

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 18 September 2025.

Popular in

January

Cheapest in

September

Average price

£92
Highest demand for flights based on searches. 18% potential increase in price (£20 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£2 potential savings vs. average return 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 return 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 return flight from Siem Reap to Hanoi. Price data was last updated on 12 September 2025.

The price you pay for your flight from Siem Reap to Hanoi may vary depending on when you book. For the best chance of a lower fare, look to book 22 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, May is the cheapest month in which you can book a flight from Siem Reap to Hanoi (average of £793). Flying from Siem Reap to Hanoi in December is currently the most expensive (average of £1,129). 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 18 September 2025.

A simple way to save on the total cost of your ticket is to fly from Siem Reap to Hanoi in the morning. If you’re flexible enough to do this you can expect to save up to 9% on your trip compared to booking a flight at midday.

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?

    Flights from Siem Reap–Angkor Intl to Hanoi Noibai have been viewed 4 times in the past calendar month.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Siem Reap to Hanoi on time: VietJet Air (56%), Air France (44%), 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 holiday 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, May is the cheapest month in which you can book a flight from Siem Reap to Hanoi (average of £793). Flying from Siem Reap to Hanoi in December is currently the most expensive (average of £1,129). 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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Can Cheapflights find flights from Siem Reap to Hanoi with no change fees?

Certainly. Search results for flights to Hanoi from Siem Reap shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Siem Reap to Hanoi become cheaper?

Yes! Start tracking prices for Siem Reap to Hanoi flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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