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

Return flights

01 Mar - 18 Mar	Lufthansa
13 Mar - 29 Mar	KLM
09 Mar - 29 Mar	KLM
18 Mar - 27 Mar	KLM
08 Mar - 29 Mar	KLM
21 Mar - 29 Mar	KLM
15 Mar - 29 Mar	KLM
04 Mar - 01 Apr	British Airways
05 Mar - 17 Mar	British Airways
11 Mar - 17 Mar	British Airways
03 Mar - 10 Mar	British Airways
21 Mar - 05 Apr	SWISS
25 Mar - 12 Apr	ITA Airways
25 Mar - 09 Apr	KLM
27 Mar - 12 Apr	ITA Airways
25 Mar - 13 Apr	ITA Airways
26 Mar - 15 Apr	British Airways
17 Mar - 07 Apr	British Airways
25 Mar - 10 Apr	KLM
26 Mar - 06 Apr	KLM

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 745€

Return flights