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

Return flights

30 Apr - 07 May	SWISS
26 Apr - 11 May	SWISS
26 Apr - 10 May	SWISS
24 Apr - 04 May	SWISS
26 Apr - 04 May	SWISS
17 Apr - 05 May	SWISS
21 Apr - 28 Apr	SWISS
28 Apr - 13 May	British Airways
17 Apr - 28 Apr	SWISS
20 Apr - 18 May	SWISS
24 Apr - 11 May	British Airways
20 Apr - 07 May	SWISS
17 Apr - 29 Apr	SWISS
22 Apr - 28 Apr	SWISS
24 Apr - 29 Apr	SWISS
22 Apr - 26 Apr	SWISS
20 Apr - 26 Apr	SWISS
19 Apr - 28 Apr	SWISS
15 Apr - 28 Apr	SWISS
06 Apr - 26 Apr	Lufthansa

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.

Book a cheap hotel in Hanoi

Cheap car rent in Hanoi

Cheapest return flights from London to Hanoi in April from 820€

Return flights