Cheap flights from Hong Kong to Hanoi from £81

The month of January is, on average, the cheapest month to fly to Hanoi from Hong Kong, with most prices found around £121. If you’re not able to fly to Hanoi in January, then March is your next best option. Flight prices from Hong Kong to Hanoi during March average around £122.

The cheapest day to depart from Hong Kong to Hanoi is on a Saturday when prices can be found for as low as £135. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Hong Kong to Hanoi for around £184.

According to our data, the cheapest time of day to fly to Hanoi is in the morning. momondo users have found flights departing from Hong Kong to Hanoi in the morning for as low as £150. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At midday is when there is more demand to fly to Hanoi, so prices are often more expensive at around £230 per ticket.

Fly from Hong Kong Intl to Hanoi Noibai for the best Hong Kong Intl - Hanoi Noibai flight prices

You are more likely to see cheaper flights to Hanoi from Hong Kong when booking weeks ahead of your departure date. In general, you can expect to find flights to Hanoi for around £161 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Hanoi from Hong Kong for as low as £132 on momondo.

There are 2 cabin classes available to choose from on Hong Kong to Hanoi flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 25% of flights between Hong Kong and Hanoi have experienced a delay on any given week. The average delay length over the past 12 months has been 111 minutes.

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

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

According to our data, HK Express have had the fewest delays on this route over the last 12 months, with about 12% of their flights experiencing any sort of delay.

4 flights are operational daily from Hong Kong to Hanoi as of October 2026. The most popular departure time for this route is 14:00, with 66% of flights per day taking off in the afternoon.

The number of flights available between Hong Kong and Hanoi is 32 per week as of October 2026. The most frequent departure day is Mon, with 22% of weekly flights leaving on this day.