AirHint found the following cheapest return flights from Lucknow (LKO) to Hanoi (HAN) in August 2025 (see full year).

Return flights

29 Aug - 12 Sep	Thai AirAsia
27 Aug - 12 Sep	Thai AirAsia
24 Aug - 12 Sep	Thai AirAsia
25 Aug - 12 Sep	Thai AirAsia
26 Aug - 30 Aug	IndiGo
20 Aug - 26 Aug	IndiGo
28 Aug - 12 Sep	AirAsia
23 Aug - 12 Sep	AirAsia
17 Aug - 24 Aug	Thai AirAsia
26 Aug - 12 Sep	AirAsia
21 Aug - 24 Aug	AirAsia
16 Aug - 24 Aug	AirAsia
19 Aug - 24 Aug	AirAsia
19 Aug - 26 Aug	Singapore Airlines

Also check the deals for one-way flights from Lucknow to Hanoi in August.

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 Lucknow to Hanoi in August from 286€

Return flights