● Deals from
● Sweeping every destination…
$397usually $417−5%22 Sept 2026 · 1-stop · score 35/100 · Wait
Why so cheap?
This fare is below usual but under our auto-research threshold — ask and we’ll find the reason now, with sources.
Fares by departure date
Today’s fare is cheaper than 75% of the 16 fares tracked for this route.
Questions people ask about this route
- What is the lowest price for a flight from San Francisco to Hanoi right now?
- The lowest price our scan found today (2026-08-29) is $397 one-way fare, departing 22 Sept 2026, 1-stop. Fares move constantly — the link below re-checks live availability on Aviasales.
- Is $397 a good price for a San Francisco to Hanoi flight (SFO→HAN)?
- Yes by the data: this route usually costs about $417 (midpoint of Google Flights' typical price range), so $397 is 5% below usual and cheaper than 75% of the 16 fares tracked for this route. FareFloor's deal score for it is 35/100 as of 2026-08-29.
- When is the cheapest time to fly from San Francisco to Hanoi in the coming months?
- Across the departure windows our 2026-08-29 scan compared, the lowest-priced departure found is 22 Sept 2026 at $397 one-way fare. Method: we sweep this origin's destinations several times a day via Google Flights data and keep the cheapest round-trip window per route — a cheaper window can appear any day, so treat this as today's answer, not a permanent one.
- Is there a direct flight from San Francisco to Hanoi at this price?
- The cheapest fare found today is 1-stop. A direct option, where one exists, may cost more — check the live fare link for alternatives.