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

Return flights

14 Apr - 05 May	Air China
26 Apr - 07 May	Air China
26 Apr - 10 May	Air China
29 Apr - 14 May	Air China
13 Apr - 04 May	Air China
29 Apr - 24 May	Air China
20 Apr - 04 May	Air China
20 Apr - 06 May	Air China
23 Apr - 06 May	Air China
21 Apr - 05 May	Air China
12 Apr - 22 Apr	Air China
13 Apr - 22 Apr	Air China
12 Apr - 27 Apr	Shenzhen Airlines
10 Apr - 27 Apr	Shenzhen Airlines
15 Apr - 27 Apr	Shenzhen Airlines
13 Apr - 27 Apr	Shenzhen Airlines
06 Apr - 27 Apr	Shenzhen Airlines
19 Apr - 27 Apr	Shenzhen Airlines
15 Apr - 20 Apr	Air China
08 Apr - 20 Apr	Air China

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

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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Cheapest return flights from London to Hanoi in April from 464€

Return flights