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

Return flights

11 Mar - 18 Mar	Air China
22 Mar - 25 Mar	Ryanair
01 Mar - 11 Mar	Scandinavian Airlines
22 Mar - 27 Mar	Ryanair
06 Mar - 18 Mar	Wizz Air
13 Mar - 29 Mar	Ryanair
11 Mar - 01 Apr	Air China
11 Mar - 29 Mar	Air China
11 Mar - 28 Mar	Air China
03 Mar - 11 Mar	Air China
05 Mar - 17 Mar	Ryanair
12 Mar - 07 Apr	Air China
01 Mar - 01 Apr	Air China
06 Mar - 07 Apr	Air China
20 Mar - 08 Apr	Ryanair
20 Mar - 01 Apr	Scandinavian Airlines
13 Mar - 06 Apr	Scandinavian Airlines
21 Mar - 07 Apr	Ryanair
20 Mar - 07 Apr	Scandinavian Airlines
09 Mar - 27 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 437€

Return flights