S$449 Cheap Flights from Seattle to Hanoi

View S$449 flight on Sun, 23 Nov, 2025Opens in a new window

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

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Cheap Flights from Seattle to Hanoi (SEA-HAN)

Prices were available within the past 7 days and start at S$449 for one-way flights and S$1,060 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

STARLUX Airlines
Mon, 12 Jan - Fri, 16 Jan
SEA
Seattle
HAN
Hanoi
S$1,060 Return, found 2 days ago
S$1,060
Return
found 2 days ago
Select STARLUX Airlines flight, departing Mon, 12 Jan from Seattle to Hanoi, returning Fri, 16 Jan, priced at S$1,060 found 2 days ago
EVA Airways
Mon, 12 Jan - Fri, 16 Jan
SEA
Seattle
HAN
Hanoi
S$1,185 Return, found 2 days ago
S$1,185
Return
found 2 days ago
Select EVA Airways flight, departing Mon, 12 Jan from Seattle to Hanoi, returning Fri, 16 Jan, priced at S$1,185 found 2 days ago
Asiana Airlines
Mon, 12 Jan - Fri, 16 Jan
SEA
Seattle
HAN
Hanoi
S$1,209 Return, found 2 days ago
S$1,209
Return
found 2 days ago
Select Asiana Airlines flight, departing Mon, 12 Jan from Seattle to Hanoi, returning Fri, 16 Jan, priced at S$1,209 found 2 days ago
Alaska Airlines
Mon, 12 Jan - Fri, 16 Jan
SEA
Seattle
HAN
Hanoi
S$1,217 Return, found 2 days ago
S$1,217
Return
found 2 days ago
Select Alaska Airlines flight, departing Mon, 12 Jan from Seattle to Hanoi, returning Fri, 16 Jan, priced at S$1,217 found 2 days ago
Delta
Mon, 12 Jan - Fri, 16 Jan
SEA
Seattle
HAN
Hanoi
S$1,226 Return, found 2 days ago
S$1,226
Return
found 2 days ago
Select Delta flight, departing Mon, 12 Jan from Seattle to Hanoi, returning Fri, 16 Jan, priced at S$1,226 found 2 days ago
Delta
Mon, 12 Jan - Fri, 16 Jan
SEA
Seattle
HAN
Hanoi
S$1,228 Return, found 2 days ago
S$1,228
Return
found 2 days ago
Select Delta flight, departing Mon, 12 Jan from Seattle to Hanoi, returning Fri, 16 Jan, priced at S$1,228 found 2 days ago
Delta
Mon, 12 Jan - Fri, 16 Jan
SEA
Seattle
HAN
Hanoi
S$1,235 Return, found 2 days ago
S$1,235
Return
found 2 days ago
Select Delta flight, departing Mon, 12 Jan from Seattle to Hanoi, returning Fri, 16 Jan, priced at S$1,235 found 2 days ago
China Airlines
Mon, 12 Jan - Fri, 16 Jan
SEA
Seattle
HAN
Hanoi
S$1,235 Return, found 2 days ago
S$1,235
Return
found 2 days ago
Select China Airlines flight, departing Mon, 12 Jan from Seattle to Hanoi, returning Fri, 16 Jan, priced at S$1,235 found 2 days ago
Delta
Mon, 12 Jan - Fri, 16 Jan
SEA
Seattle
HAN
Hanoi
S$1,246 Return, found 2 days ago
S$1,246
Return
found 2 days ago
Select Delta flight, departing Mon, 12 Jan from Seattle to Hanoi, returning Fri, 16 Jan, priced at S$1,246 found 2 days ago
Cathay Pacific
Mon, 12 Jan - Fri, 16 Jan
SEA
Seattle
HAN
Hanoi
S$1,275 Return, found 2 days ago
S$1,275
Return
found 2 days ago
Select Cathay Pacific flight, departing Mon, 12 Jan from Seattle to Hanoi, returning Fri, 16 Jan, priced at S$1,275 found 2 days ago

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

February is typically the cheapest month to fly

From S$872 - S$1,401 per traveller.

Frequently asked questions

How much is a flight from SEA to HAN?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip journey from Seattle - Tacoma Intl. Airport (SEA) to Hanoi Intl. Airport was S$1,060. Fares this good don't last forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seattle - Tacoma Intl. Airport (SEA) to Noi Bai Intl. Airport (HAN)?
Each air carrier has its own set of terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Sea-Tac Airport to HAN that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Sea-Tac Airport to Noi Bai Intl. Airport (HAN) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SEA to Hanoi Intl. Airport?
You'll have 11,000 kilometres to cover on the long-haul SeaTac to Hanoi route. Wear comfortable clothes and consider taking a travel pillow with you.
Which airlines fly direct from SEA to Noi Bai Intl. Airport (HAN)?
Direct flights aren't available, so you'll need to make at least one stop between SEA and Hanoi Intl. Airport. Take advantage of the layover time to stretch your legs and grab a coffee.
Are Seattle - Tacoma Intl. Airport (SEA) to Hanoi Intl. Airport flight tickets cheaper when they're purchased at the last minute?
Late planners can occasionally nab a bargain, with some super cheap airfares from Seattle - Tacoma Intl. Airport (SEA) to Noi Bai Intl. Airport (HAN) showing up a few weeks before the date of departure. If you'd rather book ahead of time, Expedia compares and updates the best flight deals continuously — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines advertise prices so far in advance.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Noi Bai Intl.
Return price
S$1,060
Distance
10931 km

Book with confidence

Perfect flights from Seattle to Hanoi

Your Journey from Seattle to Hanoi

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Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Philippine Airlines, Delta, Asiana Airlines, China Airlines, STARLUX Airlines, EVA Airways, Alaska Airlines, Cathay Pacific. Our selection of flights from Seattle - Tacoma Intl. to Noi Bai Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Seattle to Hanoi Flights

Experience the joy of finding cheap flights from Seattle - Tacoma Intl. to Noi Bai Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$449 and roundtrip prices from S$1,060*.
 

Pre-Flight Essentials

Ensure a smooth journey from Seattle to Hanoi with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Hanoi

Picture yourself stepping off the plane in Hanoi and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Seattle to Hanoi Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Seattle to Hanoi.
 

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With Expedia, your adventure extends beyond the flight. Explore Hanoi at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Seattle to Hanoi with Confidence

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Seattle to Hanoi

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