Cheapest one-way flights from Hanoi to San Francisco in September from $501

AirHint found the following cheapest one-way flights from Hanoi (HAN) to San Francisco (SFO) in September 2025 (see full year).

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.