Cheap flights from London to Hanoi

from as little as £411

26 nights in Hanoi, departing London Heathrow on 14 / Sep / 2025 with China Southern Airlines (price found 25 hours ago)

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

The London / Hanoi route

All 9244 km of it

Cheap flight deals for this route

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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 31,647 flights. 14 / Sep / 2025 is currently the lowest priced day of the year to fly the London/Hanoi route. There are around 4,794 flights on any given week from the UK to Hanoi and the cheapest month to fly right now is September.

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Key facts about Hanoi

How to get cheap flights from London to Hanoi

Tips and advice from our flight experts

Find a good deal on your flight from London to Hanoi with Netflights. 4,794 flights go via this route every week, and we've collected them all to help you find the best flight deal. If you want to keep your options open, take a look at flights from another airport in London.

The most popular airlines for this route are Qatar Airways, Vietnam Airlines & Emirates, while London Heathrow (LHR) is the most popular departure airport in the city. But when you fly is just as important as where you fly from. Search by month to find out when flights are at the priciest and their cheapest.

The 9244 km journey from London to Hanoi takes at least 11 hrs 45 mins. Another way to get a cheap flight is to book last minute – but this does mean you may not be able to get the exact flights you want.

We’ve scanned 31,647 flights today to help you find the cheapest deals – not just to Hanoi, but worldwide. You can also compare the prices of hotels and hire cars for your stay in Vietnam. Simply use the tabs above, or add them to your booking once you’ve chosen your flight.

Other popular destinations near Hanoi

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