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

Return flights

10 Mar - 17 Mar	Air China
11 Mar - 25 Mar	Air China
11 Mar - 20 Mar	Air China
08 Mar - 22 Mar	Air China
08 Mar - 23 Mar	Air China
08 Mar - 19 Mar	Air China
09 Mar - 20 Mar	Air China
12 Mar - 24 Mar	Air China
10 Mar - 19 Mar	Air China
08 Mar - 27 Mar	Air China
18 Mar - 08 Apr	Air China
04 Mar - 01 Apr	Singapore Airlines
17 Mar - 01 Apr	Air China
18 Mar - 02 Apr	Air China
14 Mar - 04 Apr	Air China
19 Mar - 07 Apr	Air China
13 Mar - 07 Apr	Air China
16 Mar - 08 Apr	Air China
16 Mar - 05 Apr	Air China
17 Mar - 06 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 537€

Return flights