Cheap flights from Siem Reap to Hanoi from C$ 134

The cheapest month to fly to Hanoi from Siem Reap is in March. Flight prices, which tend to average around C$ 210, are often lower during this time because this is during the off-season. If you’re not able to fly to Hanoi in March, then September is your next best option. Flight prices from Siem Reap to Hanoi during September average around C$ 224.

Fly from Siem Reap–Angkor Intl to Hanoi Noibai for the best Siem Reap–Angkor Intl - Hanoi Noibai flight prices

There is only 1 cabin class available to choose from on Siem Reap to Hanoi flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

As of November 2026, prices for Siem Reap to Hanoi flights are approximately 20% cheaper when compared to flights at the same time last year.

Historically, on average around 26% of flights between Siem Reap and Hanoi have experienced a delay on any given week. The average delay length over the past 12 months has been 105 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, Vietnam Airlines has had the least delays on this route over the last 12 months, with about 26% of their flights experiencing any sort of delay.

As of November 2026, there are 4 flights per day flying from Siem Reap to Hanoi. The most common time of day flights depart is 5:00p.m., with 76% of flights taking off in the afternoon.

As of November 2026, 30 flights take off from Siem Reap and land in Hanoi each week. The most common flight departure day for this route is Mon, with 20% of weekly flights taking off on this day.