Cheap flights from Vietnam to London from £171

The cheapest month to fly to London from Vietnam is in October. Flight prices, which tend to average around £531, are often lower during this time because this is during the off-season. The month of December is another great option to travel to London, with average flight prices from Vietnam averaging around £660.

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £945. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Vietnam to London for around £1,057.

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £901. Flights in the morning are often more expensive, with an average ticket price of £1,020.

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

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

You could potentially save up to 17% on your flight if you consider stops on a Vietnam to London flight.

China Eastern, Air China, and China Southern are the most popular carriers operating from Vietnam to London

Vietnam Airlines, China Southern and Qatar Airways are the top three most popular airlines that fly to London from Vietnam according to our data. Vietnam Airlines is the first choice among our users, with 33% of people opting to fly with this airline when travelling to London. Keep in mind that there are 5 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 21% of flights between Vietnam and London have experienced a delay on any given week. The average delay length over the past 12 months has been 105 minutes.

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

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday 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 21% of their flights experiencing any sort of delay.

As of September 2026, there are 4 flights per week flying from Vietnam to London. The most common day of the week flights depart is Mon, with 50% of flights taking off on this day.

Flight times from Vietnam to London vary, but if you’re flying out of Hanoi and flying into London Heathrow Airport (one of the most popular routes), then the duration is 13h on average. Another popular route from Vietnam to London is flying from Ho Chi Minh City to London Heathrow Airport, which will take roughly 13h 25m. Keep in mind that layovers or delays could extend your travel time.