Cheap flights from London Heathrow to Hanoi

from as little as £585

7 nights in Hanoi, departing London Heathrow on 14 / Mar / 2025 with China Southern Airlines (price found 16 hours ago)

Subject to availability, prices correct of the last 24 hours
Hanoi

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The London Heathrow / Hanoi route

All 9245 km of it

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Hanoi flight facts

What you need to know

Alternative flights from the UK to Hanoi

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Hanoi

Today alone, Netflights has searched over 36,121 flights. 14 / Mar / 2025 is currently the lowest priced day of the year to fly the London Heathrow/Hanoi route. There are around 3,133 flights on any given week from the UK to Hanoi and the cheapest month to fly right now is March.

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Key facts about Hanoi

How to get cheap flights from London Heathrow to Hanoi

Tips and advice from our flight experts

If you're looking to fly from London Heathrow to Hanoi, you might like to know that 14 / Mar / 2025 currently has the cheapest flights. At the moment, there are 15 airlines flying to Hanoi. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to Hanoi.

There are 3,133 flights from London Heathrow to or via Hanoi every week. Out of the 15 available airlines, the most popular ones are Vietnam Airlines, Thai Airways International & Cathay Pacific. But that doesn’t necessarily mean they’ll be the best option for your travel dates. To see as many flights as possible, try widening your search to include other departure airports.

The distance between London Heathrow to Hanoi is 9245 km. Normally, it takes about 17 hrs 40 mins to fly, and you can definitely expect the journey to be at least 11 hrs 20 mins. You can see the various flight times in the results.

If you want to travel in April, it's best to book your flights early, as this is peak season in Hanoi. The cheapest month to fly is normally December – try searching three to four months prior to then to get a bargain. You can also search by month, which will reveal the cheapest time of the week to fly.

Other popular destinations near Hanoi

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