Cheap flights from Bangkok to Hanoi from $78

The cheapest month to fly to Hanoi from Bangkok is in September. Flight prices, which tend to average around $100, are often lower during this time because this is during the off-season. If you’re not able to fly to Hanoi in September, then June is your next best option. Flight prices from Bangkok to Hanoi during June average around $101.

According to our data, Sunday is the cheapest day to fly to Hanoi from Bangkok. The lowest ticket price found for a Sunday departure recently was $168. 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 $207.

Our most recent data shows that the best time of day to fly to Hanoi is in the afternoon. Flights from Bangkok to Hanoi during this time can be as low as $157. Try not to purchase tickets in the evening because they tend to be around $229. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Bangkok Don Mueang Intl to Hanoi Noibai for the best Bangkok - Hanoi Noibai flight prices

You are more likely to see cheaper flights to Hanoi from Bangkok when booking weeks ahead of your departure date. In general, you can expect to find flights to Hanoi for around $164 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Hanoi from Bangkok for as low as $139 on momondo.

There are 4 cabin classes available to choose from on Bangkok to Hanoi flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

VietJet Air is the most popular carrier operating from Bangkok to Hanoi Noibai

Thai AirAsia, Vietnam Airlines and VietJet Air are the top three most popular airlines that fly to Hanoi from Bangkok according to our data. Thai AirAsia is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Hanoi. Keep in mind that there are 6 different airlines that fly to Hanoi on a routine basis, so you have a few additional options to choose from.

Historically, on average around 26% of flights between Bangkok and Hanoi have experienced a delay on any given week. The average delay length over the past 12 months has been 90 minutes.

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

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Thai Airways have had the least number of delays on this route over the last 12 months; with about 17% of their flights experiencing any sort of delay.

As of July 2026, 30 flights take off from Bangkok and land in Hanoi each day. The most common flight departure time for this route is 3:00PM, with 41% of daily flights taking off in the afternoon.

As of July 2026, 213 flights take off from Bangkok and land in Hanoi each week. The most common flight departure day for this route is Wed, with 16% of weekly flights taking off on this day.