Cheapest return flights from San Francisco to Hanoi in October from $637

AirHint found the following cheapest return flights from San Francisco (SFO) to Hanoi (HAN) in October 2025 (see full year).

Return flights

13 Oct - 28 Oct Philippine Airlines
14 Oct - 29 Oct Philippine Airlines
13 Oct - 29 Oct Philippine Airlines
14 Oct - 28 Oct Philippine Airlines
05 Oct - 21 Oct Philippine Airlines
06 Oct - 22 Oct Philippine Airlines
07 Oct - 23 Oct Philippine Airlines
07 Oct - 13 Oct Philippine Airlines
12 Oct - 27 Oct Philippine Airlines
12 Oct - 28 Oct Philippine Airlines
30 Oct - 16 Nov Asiana Airlines
18 Oct - 15 Nov China Eastern
30 Oct - 15 Nov China Eastern
12 Oct - 14 Nov Philippine Airlines
17 Oct - 16 Nov China Airlines

Also check the deals for one-way flights from San Francisco to Hanoi in October.

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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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