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

Return flights

22 Apr - 31 May	Air China
29 Apr - 10 May	Air China
23 Apr - 14 May	Air China
10 Apr - 10 May	Air China
29 Apr - 17 May	Air China
17 Apr - 03 May	Air China
08 Apr - 15 Apr	Norse Atlantic Airways (UK)
10 Apr - 25 Apr	Air China
11 Apr - 25 Apr	Air China
11 Apr - 21 Apr	Air China
20 Apr - 29 Apr	Air China
07 Apr - 28 Apr	Air China
11 Apr - 22 Apr	Air China
10 Apr - 22 Apr	Air China
21 Apr - 28 Apr	Air China
20 Apr - 28 Apr	Air China
20 Apr - 04 May	Air China
29 Apr - 04 May	Air China
27 Apr - 10 May	Air China
26 Apr - 11 May	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 $648

Return flights