Cheap flights from London to Vietnam from £263

In general, November is the cheapest month to fly from London to Vietnam. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £547. If you’re not able to fly to Vietnam in November, then September is your next best option. Flight prices from London to Vietnam during September average around £553.

The cheapest day to depart from London to Vietnam is on a Monday when prices can be found for as low as £780. Flights from London to Vietnam on a Saturday will generally be more expensive and average around £899. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Flying to Vietnam from London in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as £752 when looking at flights departing in the afternoon. Flights in the morning are often more expensive, with an average ticket price of £894.

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

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

There are 4 cabin classes available to choose from on London 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 Eastern, and Air China are the most popular carriers operating from London to Vietnam

Vietnam Airlines, Cathay Pacific and China Southern are the top three most popular airlines that fly to Vietnam from London according to our data. Vietnam Airlines is the first choice among our users, with 43% of people opting to fly with this airline when travelling to Vietnam. Keep in mind that there are 19 different airlines that fly to Vietnam on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% 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 137 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.

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday 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.

The number of flights available between London and Vietnam is 1 per day as of November 2026. The most frequent departure time is 11:00, with 50% of daily flights leaving at midday.

The number of flights available between London and Vietnam is 8 per week as of November 2026. The most frequent departure day is Mon, with 25% of weekly flights leaving on this day.