Cheap flights from London Heathrow Airport to Hanoi from £264

The month of November is, on average, the cheapest month to fly to Hanoi from London Heathrow Airport, with most prices found around £494. If you’re not able to fly to Hanoi in November, then May is your next best option. Flight prices from London Heathrow Airport to Hanoi during May average around £629.

The cheapest day to depart from London Heathrow Airport to Hanoi is on a Monday when prices can be found for as low as £780. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Hanoi for around £899.

According to our data, the cheapest time of day to fly to Hanoi is in the afternoon. momondo users have found flights departing from London Heathrow Airport to Hanoi in the afternoon for as low as £752. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Hanoi, so prices are often more expensive at around £894 per ticket.

Fly from London Heathrow to Hanoi Noibai for the best London Heathrow - Hanoi Noibai flight prices

You are more likely to see cheaper flights to Hanoi from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Hanoi for around £725 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 London Heathrow Airport for as low as £670 on momondo.

There are 3 cabin classes available to choose from on London Heathrow Airport to Hanoi flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Shenzhen Airlines and Vietnam Airlines are the most popular carriers operating from London Heathrow to Hanoi Noibai

Vietnam Airlines, Etihad Airways and Cathay Pacific are the top three most popular airlines that fly to Hanoi from London Heathrow Airport according to our data. Vietnam Airlines is the first choice among our users, with 44% of people opting to fly with this airline when travelling to Hanoi. Keep in mind that there are 16 different airlines that fly to Hanoi on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% of flights between London and Hanoi have experienced a delay on any given week. The average delay length over the past 12 months has been 134 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.

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

According to our data, Vietnam Airlines have had the fewest delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

Doha (DOH) was the most common stop: 33% of momondo users choosing one-stop flights on this route connected there.

Flights via Beijing (PEK) offer the lowest average return price of £401.

Flights connecting via Dubai (DXB) have the shortest average one-way travel time: 14h 55m.

New Delhi (DEL) has the shortest average stopover time for this route: 1h 27m.

As of November 2026, there are 1 flights per day flying from London Heathrow Airport to Hanoi. The most common time of day flights depart is 11:00, with 50% of flights taking off at midday.

As of November 2026, there are 8 flights per week flying from London Heathrow Airport to Hanoi. The most common day of the week flights depart is Mon, with 25% of flights taking off on this day.