Cheap flights from Hanoi to London from £163

In general, December is the cheapest month to fly from Hanoi to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £685. The month of June is another great option to travel to London Heathrow Airport, with average flight prices from Hanoi averaging around £688.

On average, the least expensive day to fly to London Heathrow Airport from Hanoi is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £985. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Sunday is £1,065.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Hanoi to London Heathrow Airport in the evening for as low as £967. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £1,017 on average. Flights to London Heathrow Airport from Hanoi in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

There are 3 cabin classes available to choose from on Hanoi to London Heathrow Airport 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 33% on your flight if you consider stops on a Hanoi to London Heathrow Airport flight.

Historically, on average around 18% of flights between Hanoi and London have experienced a delay on any given week. The average delay length over the past 12 months has been 107 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. Monday 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 18% of their flights experiencing any sort of delay.

Shanghai (PVG) was the most common stop: 55% of momondo users choosing one-stop flights on this route connected there.

Flights via Guangzhou (CAN) offer the lowest average return price of £508.

Flights connecting via Abu Dhabi (AUH) have the shortest average one-way travel time: 16h 20m.

Abu Dhabi (AUH) has the shortest average stopover time for this route: 1h 38m.

The number of flights available between Hanoi and London Heathrow Airport is 1 per day as of November 2026. The most frequent departure time is 09:00, with 80% of daily flights leaving at midday.

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