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

Return flights

07 Apr - 24 Apr	Ryanair
09 Apr - 23 Apr	Ryanair
25 Apr - 09 May	Ryanair
16 Apr - 30 Apr	Ryanair
29 Apr - 13 May	Ryanair
21 Apr - 05 May	Turkish Airlines
22 Apr - 06 May	Turkish Airlines
06 Apr - 30 Apr	Ryanair
29 Apr - 11 May	Turkish Airlines
13 Apr - 22 Apr	Ryanair
06 Apr - 27 Apr	Ryanair
26 Apr - 11 May	Turkish Airlines
06 Apr - 10 Apr	Ryanair
20 Apr - 03 May	Turkish Airlines
15 Apr - 29 Apr	Turkish Airlines
04 Apr - 18 Apr	Ryanair
09 Apr - 19 Apr	Ryanair
20 Apr - 06 May	Turkish Airlines
17 Apr - 03 May	Turkish Airlines
17 Apr - 04 May	Turkish Airlines

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 664€

Return flights