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

Return flights

19 May - 03 Jun	Air China
15 May - 29 May	Air China
27 May - 17 Jun	Air China
16 May - 01 Jun	Air China
13 May - 23 May	Air China
23 May - 06 Jun	Air China
07 May - 21 May	easyJet
14 May - 24 May	Air China
20 May - 24 May	Air China
14 May - 25 May	Air China
17 May - 27 May	Air China
13 May - 24 May	Air China
01 May - 22 May	Air China
22 May - 06 Jun	Air China
23 May - 20 Jun	Air China
24 May - 21 Jun	Air China
18 May - 03 Jun	Air China
03 May - 31 May	Air China
25 May - 15 Jun	Air China
03 May - 01 Jun	British Airways

Also check the deals for one-way flights from London to Hanoi in May.

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 May from $641

Return flights