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

Return flights

29 Apr - 11 May	Air China
20 Apr - 14 May	Air China
20 Apr - 11 May	Air China
26 Apr - 11 May	Air China
19 Apr - 10 May	Air China
21 Apr - 05 May	Air China
22 Apr - 06 May	Air China
17 Apr - 12 May	Air China
18 Apr - 05 May	Air China
24 Apr - 10 May	Air China
23 Apr - 27 Apr	Wizz Air UK
06 Apr - 19 Apr	Air China
12 Apr - 22 Apr	China Eastern
09 Apr - 20 Apr	China Eastern
15 Apr - 22 Apr	China Eastern
11 Apr - 27 Apr	Wizz Air UK
14 Apr - 23 Apr	China Eastern
13 Apr - 22 Apr	China Eastern
13 Apr - 27 Apr	China Eastern
06 Apr - 27 Apr	Ryanair

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 423€

Return flights