Cheapest return flights from London to Hanoi in May from 423€

AirHint found the following cheapest return flights from London (LON) to Hanoi (HAN) in May 2026 (see full year).

Return flights

13 May - 18 May Air China
13 May - 20 May Air China
27 May - 03 Jun Air China
03 May - 17 May Air China
28 May - 12 Jun Air China
06 May - 17 May Air China
24 May - 31 May Air China
20 May - 03 Jun Air China
12 May - 19 May Air China
05 May - 15 May Air China
03 May - 11 May Air China
20 May - 27 May Air China
01 May - 09 May Air China
31 May - 15 Jun Air China
30 May - 13 Jun Air China
24 May - 01 Jun Air China
24 May - 13 Jun Air China
18 May - 03 Jun Air China
24 May - 03 Jun Air China
31 May - 07 Jun Air China

Also check the deals for one-way flights from London to Hanoi in May.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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