Cheapest return flights from Sofia to Hanoi in September from 631€

AirHint found the following cheapest return flights from Sofia (SOF) to Hanoi (HAN) in September 2025 (see full year).

Return flights

18 Sep - 04 Oct Pegasus Airlines
23 Sep - 08 Oct Pegasus Airlines
11 Sep - 24 Sep Ryanair
19 Sep - 04 Oct Pegasus Airlines
15 Sep - 30 Sep Pegasus Airlines
15 Sep - 23 Sep Pegasus Airlines
19 Sep - 21 Sep Pegasus Airlines

Also check the deals for one-way flights from Sofia to Hanoi in September.

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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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