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

Return flights

27 Jul - 13 Aug	Thai AirAsia
27 Jul - 03 Aug	Thai AirAsia
02 Jul - 09 Jul	IndiGo
07 Jul - 27 Jul	Thai AirAsia
09 Jul - 27 Jul	Thai AirAsia
07 Jul - 09 Jul	Thai AirAsia
29 Jul - 13 Aug	AirAsia
27 Jul - 11 Aug	Thai AirAsia
29 Jul - 03 Aug	AirAsia
07 Jul - 18 Jul	Thai AirAsia
10 Jul - 27 Jul	AirAsia
20 Jul - 27 Jul	IndiGo
09 Jul - 20 Jul	IndiGo
09 Jul - 18 Jul	Thai AirAsia
29 Jul - 11 Aug	AirAsia
10 Jul - 18 Jul	AirAsia

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

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 July from $306

Return flights