London to Hanoi
London to Hanoi is cheapest in November and December, both at 490 €. January, the most expensive month we measured, costs about 241 € more.
London to Hanoi is 9,238 km flown direct. Every fare we measured came from VN.
That comes from pricing 179 departure dates across 7 months. Every figure below is a fare we measured on the day shown, not a live quote. When we have nothing fresh to say about a route, its page stops existing.
What is a good price from London to Hanoi?
Anything at or below the quarter mark beats three in four of the 179 one-way fares we measured here. Above the median, wait or move the date.
seen 27 Sep 2026
How far ahead do the cheap fares sit?
When we measured, the cheapest quarter of fares sat between 51 and 113 days before departure, closer in than the market as a whole. The cheap fares were on nearer dates, not months away, when we looked.
a snapshot of where the cheap seats sat, seen 27 Sep 2026
Which day of the week is cheapest?
On average, Tuesday departures came out lowest and Friday highest, a spread of about 72 €. The day matters less than the month here: pick the month first, then the day.