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

Return flights

19 Apr - 11 May	China Eastern
20 Apr - 12 May	China Eastern
21 Apr - 07 May	China Eastern
22 Apr - 09 May	China Eastern
08 Apr - 31 May	China Eastern
19 Apr - 24 May	China Eastern
06 Apr - 11 May	China Eastern
23 Apr - 14 May	China Eastern
15 Apr - 13 May	China Eastern
19 Apr - 06 May	China Eastern
14 Apr - 22 Apr	Air China
16 Apr - 27 Apr	Air China
15 Apr - 22 Apr	Air China
14 Apr - 28 Apr	Air China
08 Apr - 20 Apr	Air China
16 Apr - 22 Apr	Air China
16 Apr - 23 Apr	Air China
20 Apr - 27 Apr	Air China
19 Apr - 27 Apr	Air China
15 Apr - 27 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.

Book a cheap hotel in Hanoi

Cheap car rent in Hanoi

Cheapest return flights from London to Hanoi in April from 418€

Return flights