$492 Cheap Flights from Hanoi (HAN) to San Francisco (SFO)

View $492 flight on Sat, Sep 20, 2025Opens in a new window
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Cheap Flights from Hanoi to San Francisco (HAN-SFO)

Prices were available within the past 7 days and start at $492 for one-way flights and $764 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Tue, Jun 3 - Wed, Jul 16
HAN
Hanoi
SFO
San Francisco
$764 Roundtrip, found 6 days ago
$764
Roundtrip
found 6 days ago
Select Singapore Airlines flight, departing Tue, Jun 3 from Hanoi to San Francisco, returning Wed, Jul 16, priced at $764 found 6 days ago
United
Mon, Jun 23 - Mon, Aug 25
HAN
Hanoi
SFO
San Francisco
$773 Roundtrip, found 2 days ago
$773
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 23 from Hanoi to San Francisco, returning Mon, Aug 25, priced at $773 found 2 days ago
Philippine Airlines
Wed, Jun 4 - Fri, Aug 15
HAN
Hanoi
SFO
San Francisco
$795 Roundtrip, found 12 hours ago
$795
Roundtrip
found 12 hours ago
Select Philippine Airlines flight, departing Wed, Jun 4 from Hanoi to San Francisco, returning Fri, Aug 15, priced at $795 found 12 hours ago
STARLUX Airlines
Tue, May 13 - Sun, May 18
HAN
Hanoi
SFO
San Francisco
$795 Roundtrip, just found
$795
Roundtrip
just found
Select STARLUX Airlines flight, departing Tue, May 13 from Hanoi to San Francisco, returning Sun, May 18, priced at $795 just found
China Airlines
Sat, Dec 20 - Sat, Jan 3
HAN
Hanoi
SFO
San Francisco
$802 Roundtrip, found 1 hour ago
$802
Roundtrip
found 1 hour ago
Select China Airlines flight, departing Sat, Dec 20 from Hanoi to San Francisco, returning Sat, Jan 3, priced at $802 found 1 hour ago
All Nippon Airways
Mon, Jun 23 - Mon, Aug 25
HAN
Hanoi
SFO
San Francisco
$805 Roundtrip, found 2 days ago
$805
Roundtrip
found 2 days ago
Select All Nippon Airways flight, departing Mon, Jun 23 from Hanoi to San Francisco, returning Mon, Aug 25, priced at $805 found 2 days ago
Cathay Pacific
Mon, Jun 9 - Wed, Jul 9
HAN
Hanoi
SFO
San Francisco
$823 Roundtrip, just found
$823
Roundtrip
just found
Select Cathay Pacific flight, departing Mon, Jun 9 from Hanoi to San Francisco, returning Wed, Jul 9, priced at $823 just found
Asiana Airlines
Mon, Jun 9 - Wed, Jul 9
HAN
Hanoi
SFO
San Francisco
$854 Roundtrip, just found
$854
Roundtrip
just found
Select Asiana Airlines flight, departing Mon, Jun 9 from Hanoi to San Francisco, returning Wed, Jul 9, priced at $854 just found
Korean Air
Tue, Sep 2 - Wed, Oct 29
HAN
Hanoi
SFO
San Francisco
$879 Roundtrip, found 23 hours ago
$879
Roundtrip
found 23 hours ago
Select Korean Air flight, departing Tue, Sep 2 from Hanoi to San Francisco, returning Wed, Oct 29, priced at $879 found 23 hours ago
Delta
Sun, Nov 16 - Fri, Nov 28
HAN
Hanoi
SFO
San Francisco
$890 Roundtrip, found 6 hours ago
$890
Roundtrip
found 6 hours ago
Select Delta flight, departing Sun, Nov 16 from Hanoi to San Francisco, returning Fri, Nov 28, priced at $890 found 6 hours ago
Flights from Hanoi (HAN) to San Francisco (SFO)
Origin airport
Noi Bai Intl.
Destination airport
San Francisco Intl.
Airlines serving
Air Canada, Air China, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, China Eastern Airlines, China Southern Airlines, Delta, EVA Airways, Emirates, Japan Airlines, Korean Air, Philippine Airlines, Qatar Airways, STARLUX Airlines, Turkish Airlines, United, Vietnam Airlines
Roundtrip price
$763
Distance
7306 mi

Hanoi to San Francisco Flights

The cheapest times to fly from Hanoi to San Francisco

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Hanoi to San Francisco are during the month of June. You can find some of the cheapest flights from Hanoi to San Francisco with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Hanoi to San Francisco

Sunday is one of the best days to book for cheap flights from Hanoi to San Francisco: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Hanoi to San Francisco

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Hanoi to San Francisco in 2025. You can also book with separate airlines for your outbound and return journeys, from $492 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Hanoi to San Francisco flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Hanoi to San Francisco airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Noi Bai Intl. Airport (HAN) to San Francisco Intl. Airport (SFO) cost?
Discover the latest flight deals from HAN to SFO by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from HAN to SFO?
The cheapest flights from HAN to SFO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from HAN to SFO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from HAN to SFO. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Noi Bai Intl. Airport (HAN) to San Francisco Intl. Airport (SFO)?
There aren’t any daily nonstop flights departing from Noi Bai Intl. Airport (HAN) to San Francisco Intl. Airport (SFO). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you’ll be on your way in no time at all.
What day of the week has the most flights from HAN to SFO?
Usually you’ll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Noi Bai Intl. Airport (HAN) to San Francisco Intl. Airport (SFO)?
To reach San Francisco Intl. Airport (SFO) on time, opt for a flight that takes off from Noi Bai Intl. Airport (HAN) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Noi Bai Intl. Airport (HAN) to San Francisco Intl. Airport (SFO) last-minute?
Waiting until right before your break to book your flight from HAN to SFO often results in higher prices. While it’s possible to find some last-minute discounts, they aren’t always guaranteed. Keep your travel plans flexible to maximize your chances of landing a bargain.
Is it cheaper to book a HAN to SFO flight and hotel package?
Booking a HAN to SFO flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Pick from our extensive range of stays and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Noi Bai Intl. Airport (HAN) to San Francisco Intl. Airport (SFO)?
In most cases, you can cancel or modify your HAN to SFO flight. However, additional fees may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline’s guidelines and fees on flight changes, or if you need more information, go to our Customer Service portal.

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*Available to One Key members.