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

Return flights

06 Mar - 23 Mar	China Eastern
06 Mar - 13 Mar	China Eastern
06 Mar - 21 Mar	China Eastern
06 Mar - 18 Mar	China Eastern
06 Mar - 22 Mar	China Eastern
06 Mar - 28 Mar	China Eastern
08 Mar - 29 Mar	Air China
11 Mar - 26 Mar	Air China
08 Mar - 18 Mar	Air China
15 Mar - 31 Mar	Air China
15 Mar - 06 Apr	Air China
10 Mar - 07 Apr	Air China
16 Mar - 05 Apr	Air China
09 Mar - 06 Apr	Air China
12 Mar - 01 Apr	China Eastern
12 Mar - 03 Apr	China Eastern
09 Mar - 04 Apr	China Eastern
12 Mar - 07 Apr	China Eastern
12 Mar - 04 Apr	China Eastern
13 Mar - 03 Apr	Air China

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

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 March from 405€

Return flights