Cheap flights from London Heathrow Airport to Vietnam from £270

In general, November is the cheapest month to fly from London Heathrow Airport to Vietnam. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £565. If you’re not able to fly to Vietnam in November, then September is your next best option. Flight prices from London Heathrow Airport to Vietnam during September average around £574.

The cheapest day to depart from London Heathrow Airport to Vietnam is on a Wednesday when prices can be found for as low as £683. Flights from London Heathrow Airport to Vietnam on a Monday will generally be more expensive and average around £842. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Flying to Vietnam from London Heathrow Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as £662 when looking at flights departing in the afternoon. Flights in the morning are often more expensive, with an average ticket price of £780.

Fly from London Heathrow to Ho Chi Minh City for the best London Heathrow - Vietnam flight prices

You are more likely to see cheaper flights to Vietnam from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Vietnam for around £682 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Vietnam from London Heathrow Airport for as low as £597 on momondo.

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

Shenzhen Airlines, China Southern, and China Eastern are the most popular carriers operating from London Heathrow to Vietnam

Vietnam Airlines, China Southern and Qatar Airways are the top three most popular airlines that fly to Vietnam from London Heathrow Airport according to our data. Vietnam Airlines is the first choice among our users, with 41% of people opting to fly with this airline when travelling to Vietnam. Keep in mind that there are 17 different airlines that fly to Vietnam on a routine basis, so you have a few additional options to choose from.

Historically, on average around 16% of flights between London and Vietnam have experienced a delay on any given week. The average delay length over the past 12 months has been 180 minutes.

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

Friday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday 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 16% of their flights experiencing any sort of delay.

As of March 2026, there are 2 flights per day flying from London Heathrow Airport to Vietnam. The most common time of day flights depart is 11:00, with 100% of flights taking off at midday.

16 flights are operational weekly from London Heathrow Airport to Vietnam as of March 2026. The most popular departure day for this route is Tue, with 19% of flights per week taking off on this day.