We've gone through lots of different flights, to help you find the cheapest way to get from London Gatwick to Hanoi. You can choose from ten airlines. At the moment, 25 / Sep / 2025 is the cheapest date to travel, but scroll through the results to find the option that works best for you.
Qatar Airways is the most popular airline that flies from London Gatwick to Hanoi. But it's still worth looking at other options, as there are 1,052 flights to Hanoi every week. If you want to broaden your search, look at flights departing from other airports.
Generally speaking, the flight from London Gatwick to Hanoi takes around 18 hrs 40 mins. The fastest flight takes 15 hrs 55 mins to cover the 9244 km distance. You can view all flight times yourself in the results list.
May is normally the cheapest month to fly to Hanoi, but it’s important to try different options when you search. Searching by month, for instance, will show you the best time of the week to fly. December is always the most expensive time to fly but, if you check regularly and book early, you have a better chance of getting a good deal.
