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San Francisco to Hanoi flights take around 18 to 23 hours with one connection. The distance between San Francisco and Hanoi sits at roughly 7,305 miles (11,757 kilometers), and no airline currently operates direct service on this route. Most travelers fly out of San Francisco International Airport (SFO), which has daily connecting flights to Noi Bai International Airport (HAN). Airlines like United Airlines, Vietnam Airlines, Cathay Pacific and Korean Air provide connecting service on this route. Connecting flights typically route through Seoul, Tokyo, Hong Kong. Flight times vary based on your layover duration and which airline you pick.
Connecting flights from San Francisco to Hanoi run about 18 to 23 hours depending on your routing. San Francisco to Hanoi through Seoul takes around 18 with United Airlines or Vietnam Airlines. Flying via Tokyo on Cathay Pacific adds up to similar times.
United Airlines operates daily connections from San Francisco through their hub network. Several airlines codeshare, so you can book through to Hanoi on a single ticket even though you're connecting.
Layovers in hub cities typically last 2 to 4 hours. Longer connections can push total travel time past 23 hours, but sometimes those tickets cost $200 to $400 less than the shorter itineraries. Worth checking both options.
Hanoi is 15 hours ahead of San Francisco during standard time. Check local daylight saving rules as the gap might shift seasonally. When you leave San Francisco in the afternoon or evening, you'll typically arrive in Hanoi the next morning or afternoon local time.
Most eastbound flights depart San Francisco in the afternoon or evening and arrive in Hanoi the following day. The overnight connection works well since you can sleep on the long-haul leg.
Booking at least 6 to 8 weeks out usually gets you the best fares. Shoulder seasons tend to be cheaper for this route since it's between peak summer travel and the winter holiday rush.
How long is the flight from San Francisco to Hanoi?
The flight from San Francisco to Hanoi takes around 18 to 23 hours. Total travel time depends on your routing and layover duration. Flights through Seoul or Tokyo typically fall on the shorter end, while connections through other hubs can add extra time.
How far is it from San Francisco to Hanoi?
The distance from San Francisco to Hanoi is approximately 7,305 miles (11,757 kilometers). This long-haul route makes it one of the longer flights from the Western US region.
What is the time difference between San Francisco and Hanoi?
Hanoi is 15 hours ahead of San Francisco. Time differences may shift during daylight saving periods depending on local rules in each location.
Are there direct flights from San Francisco to Hanoi?
No, there are no direct flights from San Francisco to Hanoi as of 2024. All flights require at least one connection, typically through hubs like Seoul, Tokyo, or Hong Kong.
Which airlines fly from San Francisco to Hanoi?
United Airlines, Vietnam Airlines, Cathay Pacific, Korean Air, Japan Airlines and EVA Air operate service from San Francisco to Hanoi. United Airlines typically has the most weekly departures on this route.
Planning beyond this route? Explore more flight times, distances, and travel durations using our tools below. Start with our Flight Time Calculator to estimate journey times worldwide, or browse average travel times from your departure city using the San Francisco Flight Times.
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