What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Siem Reap to Hanoi flights?

Over the past year, Vietnam Airlines have had the lowest number of delays on this route, with just 26% of flights being delayed.

How often are flights from Siem Reap to Hanoi delayed?

About 26% of weekly flights between Siem Reap and Hanoi have experienced delays in the past year, with the average delay time being 104 minutes.

What is the most punctual flight time for Siem Reap to Hanoi flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

How popular is this Siem Reap to Hanoi flight route?

Flights from Siem Reap–Angkor Intl to Hanoi Noibai have been viewed 3 times in the past calendar month.

How long is the flight from Siem Reap to Hanoi?

A quick flight from Siem Reap to Hanoi can take about 3h 15m. Vietnam Airlines provides one of the quickest options available for as low as £178. The distance from Siem Reap to Hanoi is about 552 mi.

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

Currently priced at £86, VietJet Air will fly you from Siem Reap to Hanoi and back. In addition to VietJet Air, many other airlines offer competitively priced options for your trip. This flight start at 35% lower than the current average price 3 months from now.

Weekly flight availability from Siem Reap to Hanoi

The most flights from SAI to HAN are scheduled on a Wednesday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

In terms of precipitation, rainfall in Hanoi ranges from 14.0 - 296.0 inches per month. August is typically the wettest month, when rainfall can reach 296.0 mm. December is typically the driest time to visit Hanoi when rainfall is around 14.0 mm.

If weather is an important factor for your trip to Hanoi, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 17.0 C).

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 (54%), Air France (46%), Vietnam Airlines (46%).

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.

£61+ Cheap Flights from Siem Reap, Cambodia to Hanoi

Cheap flight deals from Siem Reap to Hanoi

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Siem Reap to Hanoi
Explore the most affordable flight options available from Siem Reap to Hanoi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 September 2026.

Sun 6/919:05 -

Nonstop1h 45m

Wed 9/916:20 -

Nonstop1h 45m

Deal found 6/9£150

Wed 9/919:05 -

Nonstop1h 45m

Tue 15/916:20 -

Nonstop1h 45m

Deal found 6/9£160

Thu 8/1018:05 -

Nonstop1h 45m

Sat 17/1013:10 -

1 stop3h 15m

Deal found 9/9£171

Wed 9/918:05 -

Nonstop1h 45m

Thu 17/915:30 -

Nonstop1h 40m

Deal found 6/9£175

Thu 10/1217:05 -

1 stop3h 25m

Thu 17/1212:40 -

1 stop3h 30m

Deal found 10/9£178

Thu 10/918:05 -

Nonstop1h 45m

Thu 17/915:30 -

Nonstop1h 40m

Deal found 6/9£186

Tue 8/918:05 -

Nonstop1h 45m

Mon 14/915:30 -

Nonstop1h 40m

Deal found 7/9£187

Fri 11/918:05 -

Nonstop1h 45m

Sun 13/906:50 -

2 stops11h 30m

Deal found 9/9£201

Sun 13/918:05 -

Nonstop1h 45m

Wed 16/906:50 -

2 stops11h 30m

Deal found 6/9£207

Sun 13/918:05 -

Nonstop1h 45m

Sun 20/917:20 -

2 stops24h 35m

Deal found 6/9£209

Sun 13/918:05 -

Nonstop1h 45m

Mon 14/906:50 -

2 stops11h 30m

Deal found 6/9£210

Find flight deals from Siem Reap to Hanoi

Round-trip from	£168
One-way from	£61
Popular in	June
Cheapest in	September
Average price	£100

Vietnam Airlines
11/1-4/2
Nonstop
3h 25m total
Siem Reap to Hanoi

Search Deals

VietJet Air
23/2-31/12
Nonstop
1h 45m total
Siem Reap to Hanoi

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£7 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

Siem ReapHanoi

SAI Siem Reap–Angkor Intl - HAN Hanoi Noibai

SAIHAN

Siem Reap–Angkor Intl

Tue 23/2

19:05-20:50

Nonstop1h 45m

Hanoi Noibai

Wed 31/12

00:00-23:00

Nonstop0h 00m

£61

Siem ReapHanoi

SAI Siem Reap–Angkor Intl - HAN Hanoi Noibai

SAIHAN

Siem Reap–Angkor Intl

Mon 4/1

19:05-20:50

Nonstop1h 45m

Hanoi Noibai

Wed 31/12

00:00-23:00

Nonstop0h 00m

£129

Siem ReapHanoi

SAI Siem Reap–Angkor Intl - HAN Hanoi Noibai

SAIHAN

Siem Reap–Angkor Intl

Sun 6/12

19:05-20:50

Nonstop1h 45m

Hanoi Noibai

Wed 31/12

00:00-23:00

Nonstop0h 00m

£138

Siem ReapHanoi

SAI Siem Reap–Angkor Intl - HAN Hanoi Noibai

SAIHAN

Siem Reap–Angkor Intl

Wed 11/11

21:30-08:40

1 stop11h 10m

Hanoi Noibai

Wed 31/12

00:00-23:00

Nonstop0h 00m

£145

Siem ReapHanoi

SAI Siem Reap–Angkor Intl - HAN Hanoi Noibai

SAIHAN

Siem Reap–Angkor Intl

Sun 6/12

21:30-08:40

1 stop11h 10m

Hanoi Noibai

Wed 31/12

00:00-23:00

Nonstop0h 00m

£146

Siem ReapHanoi

SAI Siem Reap–Angkor Intl - HAN Hanoi Noibai

SAIHAN

Siem Reap–Angkor Intl

Fri 6/11

21:30-08:40

1 stop11h 10m

Hanoi Noibai

Wed 31/12

00:00-23:00

Nonstop0h 00m

£150

Siem ReapHanoi

SAI Siem Reap–Angkor Intl - HAN Hanoi Noibai

SAIHAN

Siem Reap–Angkor Intl

Sat 28/11

21:30-19:15

2 stops21h 45m

Hanoi Noibai

Wed 31/12

00:00-23:00

Nonstop0h 00m

£151

Siem ReapHanoi

SAI Siem Reap–Angkor Intl - HAN Hanoi Noibai

SAIHAN

Siem Reap–Angkor Intl

Tue 15/9

09:35-19:45

2 stops10h 10m

Hanoi Noibai

Wed 31/12

00:00-23:00

Nonstop0h 00m

£153

Siem ReapHanoi

SAI Siem Reap–Angkor Intl - HAN Hanoi Noibai

SAIHAN

Siem Reap–Angkor Intl

Mon 7/12

21:30-10:10

1 stop12h 40m

Hanoi Noibai

Wed 31/12

00:00-23:00

Nonstop0h 00m

£154

Siem ReapHanoi

SAI Siem Reap–Angkor Intl - HAN Hanoi Noibai

SAIHAN

Siem Reap–Angkor Intl

Thu 22/10

17:20-20:35

1 stop3h 15m

Hanoi Noibai

Mon 26/10

12:40-16:10

1 stop3h 30m

£178

Flights are sorted by cheapest return flights first.

Deals found on 6/9

Showing 1-10 of 15 resultsSorted by cheapest first

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.

SAI-HAN

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

Prices

Airlines

Delays

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

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 27 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, September is the cheapest month in which you can book a flight from Siem Reap to Hanoi (average of £100). Flying from Siem Reap to Hanoi in June is currently the most expensive (average of £164). 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?

When flying from Siem Reap to Hanoi, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Siem Reap to Hanoi?

Airfare is above average for this route at the moment.

Siem Reap to Hanoi flights typically cost between £91 and £108 in January.
The cheapest return price found within the last 5 days was £168 on Multiple Airlines (11 Jan–4 Feb).

Reviews of airlines servicing Hanoi

See what other customers who have flown with VietJet Air from Siem Reap to Hanoi have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

VietJet Air

5.6

Fair

174 reviews

Check prices

Reviews

1 / 7

10.0

Excellent

xuan-anh,Apr 2026

SGN - SYD

Check in was too long (58 mn). Online check in wasn’t available on this flight (VJ85).

VietJet Air

5.6

Fair

174 reviews

VietJet Air

5.6

Fair

174 reviews

Check prices

Reviews

1 / 7

10.0

Excellent

xuan-anh,Apr 2026

SGN - SYD

Check in was too long (58 mn). Online check in wasn’t available on this flight (VJ85).

Related info for your journey

How popular is this Siem Reap to Hanoi flight route?
Flights from Siem Reap–Angkor Intl to Hanoi Noibai have been viewed 3 times in the past calendar month.
How long is the flight from Siem Reap to Hanoi?
A quick flight from Siem Reap to Hanoi can take about 3h 15m. Vietnam Airlines provides one of the quickest options available for as low as £178. The distance from Siem Reap to Hanoi is about 552 mi.
What is the cheapest airline to fly from Siem Reap to Hanoi round-trip?
Currently priced at £86, VietJet Air will fly you from Siem Reap to Hanoi and back. In addition to VietJet Air, many other airlines offer competitively priced options for your trip. This flight start at 35% lower than the current average price 3 months from now.
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 (54%), Air France (46%), Vietnam Airlines (46%).
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, September is the cheapest month in which you can book a flight from Siem Reap to Hanoi (average of £100). Flying from Siem Reap to Hanoi in June is currently the most expensive (average of £164). 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.

See more FAQs

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Top airline flying from Siem Reap to Hanoi

Airline	Cheapest	Average	Flexibility	On-time
VietJet Air	Cheapest£86	Average£118	FlexibilityNo cancel fee	On-timeN/A	Search VietJet Air flights

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How does Cheapflights help users find flights from Siem Reap to Hanoi?

Cheapflights helps you search for flights from Siem Reap to Hanoi via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Siem Reap to Hanoi?

Millions of users choose and trust Cheapflights to book the best flight deals from Siem Reap to Hanoi for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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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Cheap flights from Siem Reap, Cambodia to Hanoi from £61

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Siem Reap to Hanoi

Cheapest flights from Siem Reap to HanoiExplore the most affordable flight options available from Siem Reap to Hanoi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 September 2026.

Explore the most affordable flight options available from Siem Reap to Hanoi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 September 2026.

Best flights from Siem Reap to HanoiDiscover carefully curated flight deals from Siem Reap to Hanoi that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 September 2026.

Discover carefully curated flight deals from Siem Reap to Hanoi that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 September 2026.

Direct flights from Siem Reap to HanoiExplore direct flight options from Siem Reap to Hanoi based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 September 2026.

Explore direct flight options from Siem Reap to Hanoi based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 September 2026.

Last-minute flights from Siem Reap to HanoiDiscover last-minute flight deals from Siem Reap to Hanoi. Data last updated 10 September 2026 and is based on user searches.

Discover last-minute flight deals from Siem Reap to Hanoi. Data last updated 10 September 2026 and is based on user searches.

One-way flights from Siem Reap to HanoiSearch for one-way flight options from Siem Reap to Hanoi. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

Search for one-way flight options from Siem Reap to Hanoi. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

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Use the filters below to find and compare flights from Siem Reap to Hanoi that are best for you.

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.

Cheapflights Insights

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

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 27 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?

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

When flying from Siem Reap to Hanoi, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Siem Reap to Hanoi?

Airfare is above average for this route at the moment.

Siem Reap to Hanoi flights typically cost between £91 and £108 in January.The cheapest return price found within the last 5 days was £168 on Multiple Airlines (11 Jan–4 Feb).

Weekly flight availability from Siem Reap to Hanoi

The most flights from SAI to HAN are scheduled on a Wednesday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

How often are flights from Siem Reap to Hanoi delayed?

About 26% of weekly flights between Siem Reap and Hanoi have experienced delays in the past year, with the average delay time being 104 minutes.

What is the most punctual flight time for Siem Reap to Hanoi flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Siem Reap to Hanoi flights?

Over the past year, Vietnam Airlines have had the lowest number of delays on this route, with just 26% of flights being delayed.

Reviews of airlines servicing Hanoi

See what other customers who have flown with VietJet Air from Siem Reap to Hanoi have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How popular is this Siem Reap to Hanoi flight route?

How long is the flight from Siem Reap to Hanoi?

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

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

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

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

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

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

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.

Alternative routes for Siem Reap to Hanoi

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Hanoi by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Vietnam

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Search flights from Siem Reap to Hanoi by cabin class

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Other flights to Hanoi

Explore flights to Hanoi departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 10 September 2026.

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Can Cheapflights find flights from Siem Reap to Hanoi with no change fees?

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

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Cheapest flights from Siem Reap to Hanoi
Explore the most affordable flight options available from Siem Reap to Hanoi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 September 2026.

Best flights from Siem Reap to Hanoi
Discover carefully curated flight deals from Siem Reap to Hanoi that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 September 2026.

Direct flights from Siem Reap to Hanoi
Explore direct flight options from Siem Reap to Hanoi based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 September 2026.

Last-minute flights from Siem Reap to Hanoi
Discover last-minute flight deals from Siem Reap to Hanoi. Data last updated 10 September 2026 and is based on user searches.

One-way flights from Siem Reap to Hanoi
Search for one-way flight options from Siem Reap to Hanoi. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

Siem Reap to Hanoi flights typically cost between £91 and £108 in January.
The cheapest return price found within the last 5 days was £168 on Multiple Airlines (11 Jan–4 Feb).