Cheap flights from Siem Reap to Hanoi from $83

The cheapest month to fly to Hanoi from Siem Reap is in March. Flight prices, which tend to average around $149, 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 $159.

According to our data, Saturday is the cheapest day to fly to Hanoi from Siem Reap. The lowest ticket price found for a Saturday departure recently was $179. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Hanoi on Monday is $411.

Our most recent data shows that the best time of day to fly to Hanoi is in the evening. Flights from Siem Reap to Hanoi during this time can be as low as $186. Try not to purchase tickets in the afternoon because they tend to be around $550. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

There are 3 cabin classes 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 in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of 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 have had the least number of 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 5 flights per day flying from Siem Reap to Hanoi. The most common time of day flights depart is 5:00PM, with 76% of flights taking off in the afternoon.

The number of flights available between Siem Reap and Hanoi is 35 per week as of November 2026. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.