$421 Cheap Flights from Hanoi (HAN) to Seattle (SEA)

View $421 flight on Sat, Jan 31, 2026Opens in a new window

Popular airlines from Noi Bai Intl. Airport (HAN) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Hanoi to Seattle (HAN-SEA)

Prices were available within the past 7 days and start at $421 for one-way flights and $692 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Sat, Jan 31 - Sun, Feb 22
HAN
Hanoi
SEA
Seattle
$692 Roundtrip, just found
$692
Roundtrip
just found
Select Singapore Airlines flight, departing Sat, Jan 31 from Hanoi to Seattle, returning Sun, Feb 22, priced at $692 just found
Singapore Airlines
Sat, Jan 31 - Sun, Feb 22
HAN
Hanoi
SEA
Seattle
$728 Roundtrip, just found
$728
Roundtrip
just found
Select Singapore Airlines flight, departing Sat, Jan 31 from Hanoi to Seattle, returning Sun, Feb 22, priced at $728 just found
Philippine Airlines
Wed, Apr 15 - Mon, May 4
HAN
Hanoi
SEA
Seattle
$738 Roundtrip, found 3 days ago
$738
Roundtrip
found 3 days ago
Select Philippine Airlines flight, departing Wed, Apr 15 from Hanoi to Seattle, returning Mon, May 4, priced at $738 found 3 days ago
Delta
Mon, Jun 1 - Mon, Jun 15
HAN
Hanoi
SEA
Seattle
$816 Roundtrip, found 3 days ago
$816
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Jun 1 from Hanoi to Seattle, returning Mon, Jun 15, priced at $816 found 3 days ago
Korean Air
Wed, Apr 15 - Wed, May 13
HAN
Hanoi
SEA
Seattle
$819 Roundtrip, just found
$819
Roundtrip
just found
Select Korean Air flight, departing Wed, Apr 15 from Hanoi to Seattle, returning Wed, May 13, priced at $819 just found
STARLUX Airlines
Fri, Nov 21 - Sat, Nov 29
HAN
Hanoi
SEA
Seattle
$826 Roundtrip, found 5 days ago
$826
Roundtrip
found 5 days ago
Select STARLUX Airlines flight, departing Fri, Nov 21 from Hanoi to Seattle, returning Sat, Nov 29, priced at $826 found 5 days ago
Japan Airlines
Thu, Jan 29 - Thu, Feb 19
HAN
Hanoi
SEA
Seattle
$834 Roundtrip, found 3 days ago
$834
Roundtrip
found 3 days ago
Select Japan Airlines flight, departing Thu, Jan 29 from Hanoi to Seattle, returning Thu, Feb 19, priced at $834 found 3 days ago
China Airlines
Mon, Apr 27 - Sun, May 24
HAN
Hanoi
SEA
Seattle
$839 Roundtrip, just found
$839
Roundtrip
just found
Select China Airlines flight, departing Mon, Apr 27 from Hanoi to Seattle, returning Sun, May 24, priced at $839 just found
Asiana Airlines
Sat, Jan 31 - Sun, Feb 22
HAN
Hanoi
SEA
Seattle
$869 Roundtrip, just found
$869
Roundtrip
just found
Select Asiana Airlines flight, departing Sat, Jan 31 from Hanoi to Seattle, returning Sun, Feb 22, priced at $869 just found
Cathay Pacific
Sun, May 10 - Sun, May 24
HAN
Hanoi
SEA
Seattle
$903 Roundtrip, found 3 days ago
$903
Roundtrip
found 3 days ago
Select Cathay Pacific flight, departing Sun, May 10 from Hanoi to Seattle, returning Sun, May 24, priced at $903 found 3 days ago

Find the cheapest month to fly from Hanoi (HAN) to Seattle (SEA)

October is typically the cheapest month to fly

From $738 - $1,036 per traveler.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $808
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $808

Frequently asked questions

How much does a flight from Noi Bai Intl. Airport (HAN) to Seattle - Tacoma Intl. Airport (SEA) cost?
Lock in a cheap one-way flight from $421 or cheap return flight from $692 from Noi Bai Intl. Airport (HAN) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Noi Bai Intl. Airport (HAN) to Seattle - Tacoma Intl. Airport (SEA)?
January is the cheapest month to fly from HAN to SEA. Traveling during quieter months is often the key to better flight prices.
What is the cheapest airline that flies from Noi Bai Intl. Airport (HAN) to Seattle - Tacoma Intl. Airport (SEA)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest HAN to SEA flight.
How many flights per day from Noi Bai Intl. Airport (HAN) to Seattle - Tacoma Intl. Airport (SEA)?
You'll have to hop on a flight with a layover if you're traveling from Noi Bai Intl. Airport (HAN) to Seattle - Tacoma Intl. Airport (SEA). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from HAN to SEA?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary based 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 Seattle - Tacoma Intl. Airport (SEA)?
To avoid possible delays on the Noi Bai Intl. Airport (HAN) to Seattle - Tacoma Intl. Airport (SEA) route, travel before 3 PM. Later departures have a 22% higher chance of being canceled.**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 Seattle - Tacoma Intl. Airport (SEA) last-minute?
Last-minute fares from HAN to SEA are generally more expensive. To secure the lowest rates, start looking for flights as soon as possible. That being said, if you're flexible with your travel plans, you may find a cheap ticket right before you leave.
Is it cheaper to book a HAN to SEA flight and hotel package?
Booking a HAN to SEA flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our wide range of hotels and then add activities, car rentals and flights to your booking. Bundle everything 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 Seattle - Tacoma Intl. Airport (SEA)?
Usually, it's possible to reschedule or cancel your HAN to SEA flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Noi Bai Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Japan Airlines, Korean Air, Philippine Airlines, Qatar Airways, STARLUX Airlines, Singapore Airlines, Turkish Airlines
Roundtrip price
$692
Distance
6832 mi

Book with confidence

Hanoi to Seattle Flights

The cheapest times to fly from Hanoi to Seattle

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 Seattle are during the month of January. You can find some of the cheapest flights from Hanoi to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Hanoi to Seattle

Sunday is one of the best days to book for cheap flights from Hanoi to Seattle: 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 Seattle

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 Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $421 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 Seattle 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 Seattle 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.

 

Hanoi to Seattle Flights

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*Available to One Key members.