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

Return flights

01 Apr - 12 Apr	KLM
29 Apr - 17 May	KLM
15 Apr - 19 Apr	Lufthansa
27 Apr - 13 May	British Airways
27 Apr - 17 May	British Airways
16 Apr - 21 Apr	Lufthansa
08 Apr - 13 Apr	Lufthansa
29 Apr - 10 May	Lufthansa
07 Apr - 22 Apr	British Airways
08 Apr - 22 Apr	British Airways
10 Apr - 21 Apr	Lufthansa
01 Apr - 19 Apr	Lufthansa
13 Apr - 23 Apr	SWISS
27 Apr - 10 May	Lufthansa
30 Apr - 10 May	Lufthansa
23 Apr - 05 May	SWISS
23 Apr - 10 May	SWISS
08 Apr - 17 May	British Airways
09 Apr - 12 Apr	KLM
23 Apr - 07 May	SWISS

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.

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Cheapest return flights from London to Hanoi in April from 791€

Return flights