Hanoi

$305+ Cheap flights from Seattle (SEA) to Hanoi (HAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HAN
ene. 11 — ene. 181
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Hanoi Noibai are usually found in September or February, booked 59 days in advance, depart on a Tuesday or Friday and return on a Sunday

Cheap flight deals from Seattle to Hanoi

Cheapest flights from Seattle to Hanoi
Explore the most affordable flight options available from Seattle to Hanoi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

This Korean Air deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/317:13 amSEA - HAN
2 stops36h 57mKorean Air
sáb. 2/712:20 pmHAN - SEA
1 stop35h 40mKorean Air
Deal found 12/9$851
This Korean Air deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/317:13 amSEA - HAN
2 stops36h 57mKorean Air
lun. 2/211:05 pmHAN - SEA
2 stops37h 37mKorean Air
Deal found 12/9$862
This Korean Air deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/317:13 amSEA - HAN
2 stops36h 57mKorean Air
vie. 2/612:20 pmHAN - SEA
1 stop35h 40mKorean Air
Deal found 12/9$876
This Korean Air deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/317:13 amSEA - HAN
2 stops36h 57mKorean Air
jue. 2/511:05 pmHAN - SEA
2 stops30h 49mKorean Air
Deal found 12/9$887
This FlightHub deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/3012:10 amSEA - HAN
1 stop31h 15mAsiana Airlines
jue. 2/511:50 pmHAN - SEA
1 stop29h 05mAsiana Airlines
Deal found 12/9$924
This Asiana Airlines deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/2912:10 amSEA - HAN
1 stop31h 15mAsiana Airlines
lun. 2/21:30 pmHAN - SEA
1 stop15h 25mAsiana Airlines
Deal found 12/9$987
This Korean Air deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/307:13 amSEA - HAN
2 stops36h 57mKorean Air
sáb. 2/712:20 pmHAN - SEA
1 stop35h 40mKorean Air
Deal found 12/9$1,047
This Asiana Airlines deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/2812:10 amSEA - HAN
1 stop31h 15mAsiana Airlines
lun. 2/21:30 pmHAN - SEA
1 stop15h 25mAsiana Airlines
Deal found 12/9$1,053
This Korean Air deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/307:13 amSEA - HAN
2 stops36h 57mKorean Air
lun. 2/211:05 pmHAN - SEA
2 stops30h 49mKorean Air
Deal found 12/9$1,058
This Korean Air deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/307:13 amSEA - HAN
2 stops36h 57mKorean Air
jue. 2/512:20 pmHAN - SEA
1 stop35h 40mKorean Air
Deal found 12/9$1,072
This Korean Air deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/317:13 amSEA - HAN
2 stops36h 57mKorean Air
dom. 2/812:20 pmHAN - SEA
2 stops43h 34mKorean Air
Deal found 12/9$1,099

Find flight deals from Seattle to Hanoi

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Hanoi (HAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated diciembre 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$650
(oojo)

One-way from

$305
(FlightHub)

Popular in

June

Cheapest in

September

Average price

$1,368
Provider with most accurate pricing for Seattle/Tacoma Intl-Hanoi Noibai flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Hanoi Noibai flights.
From Seattle/Tacoma Intl to Hanoi Noibai
One-way flight from Seattle/Tacoma Intl to Hanoi Noibai
Highest demand for flights based on searches. 19% potential increase in price ($236 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).
Average for round-trip flights in December 2025

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Hanoi that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 12, 2025.
Use the filters below to find and compare flights from Seattle to Hanoi that are best for you.

Fly from

Seattle

Fly to

Hanoi

Route

Depart

Return

Price

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

dom. 1/25

11:00 am-9:45 pm

1 stop19h 45m

Hanoi Noibai

dom. 2/1

12:20 pm-9:00 am

1 stop35h 40m

$650

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

mié. 3/18

7:15 am-9:45 pm

2 stops24h 30m

Hanoi Noibai

dom. 4/5

12:00 pm-10:40 am

1 stop36h 40m

$674

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

dom. 3/15

7:15 am-9:45 pm

2 stops24h 30m

Hanoi Noibai

lun. 4/6

12:00 pm-10:40 am

1 stop36h 40m

$724

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

dom. 3/1

11:00 am-9:45 pm

1 stop19h 45m

Hanoi Noibai

jue. 3/19

12:20 pm-8:02 pm

2 stops21h 42m

$730

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

lun. 3/9

12:00 pm-9:45 pm

1 stop19h 45m

Hanoi Noibai

jue. 3/12

12:20 pm-11:21 pm

2 stops25h 01m

$743

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

jue. 2/26

6:10 am-3:40 pm

2 stops42h 30m

Hanoi Noibai

sáb. 3/7

11:05 am-8:47 pm

2 stops24h 42m

$906

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

dom. 1/25

7:30 pm-10:25 pm

2 stops35h 55m

Hanoi Noibai

sáb. 1/31

12:25 am-9:12 pm

3 stops35h 47m

$1,043

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

jue. 1/1

5:59 pm-6:30 pm

2 stops33h 31m

Hanoi Noibai

lun. 3/2

7:30 pm-8:58 pm

2 stops40h 28m

$1,062

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

mar. 12/30

7:13 am-11:10 am

2 stops36h 57m

Hanoi Noibai

jue. 2/5

12:20 pm-9:00 am

1 stop35h 40m

$1,072

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

lun. 5/4

11:59 pm-11:30 am

3 stops45h 31m

Hanoi Noibai

mar. 5/12

12:40 pm-10:32 am

2 stops35h 52m

$1,165

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 20 results
1
2

Compare providers for flights from Seattle to Hanoi

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Hanoi in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Hanoi flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Seattle-Hanoi flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Seattle-Hanoi flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Hanoi flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Hanoi flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Hanoi

Have a flexible travel schedule? Discover the best time to fly to Hanoi from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Hanoi

What is the cheapest month to book a flight from Seattle to Hanoi?

Currently, September is the cheapest month in which you can book a flight from Seattle to Hanoi (average of $542). Flying from Seattle to Hanoi in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to HAN?

Find hourly flight availability from Seattle to Hanoi. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 12, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 13% on flights from Seattle to Hanoi by exploring options for tickets in the morning.

Reviews of airlines servicing Hanoi

Get insights into the airlines that provide service to Hanoi. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Hanoi. Reviews last updated diciembre 12, 2025.
Read reviews from past customers who have flown STARLUX Airlines, EVA Air, and Korean Air from Seattle to Hanoi. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

8.7

Comfort

8.9

Crew

9.2

Entertainment

8.9

Boarding

8.9

Overall

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Food

8.7

Comfort

8.9

Crew

9.2

Entertainment

8.9

Boarding

8.9

Overall

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Food

8.7

Comfort

8.9

Crew

9.2

Entertainment

8.9

Boarding

8.9

Overall

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Food

8.7

Comfort

8.9

Crew

9.2

Entertainment

8.9

Boarding

8.9

Overall

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Food

8.7

Comfort

8.9

Crew

9.2

Entertainment

8.9

Boarding

8.9

Overall

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Food

8.7

Comfort

8.9

Crew

9.2

Entertainment

8.9

Boarding

8.9

Overall

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Related info for your journey

Find useful and relevant information for your journey from Seattle to Hanoi. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How long is the flight from Seattle to Hanoi?

    Korean Air can get you from Seattle to Hanoi in just under 19h 45m. Your travel time can differ by up to . Airlines will cover a distance of 6827 mi.

  • What are the cheapest airlines flying from Seattle to Hanoi round-trip?

    Our cheapest airline available from Seattle to Hanoi is Singapore Airlines. Our recent data shows that you can find tickets from as low as $628 on this airline. Additional options worth looking into are Asiana Airlines and Philippine Airlines, starting at $637 and $652 round-trip. Singapore Airlines is priced at 33% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Hanoi one-way?

    $309 is the cheapest one-way deal found within the past few days, from Singapore Airlines. You may also be able to find cheap deals on Korean Air and Asiana Airlines, with prices starting from $360 and $362, respectively.

  • Where are the most common layover locations when flying from Seattle to Hanoi?

  • What are some popular things to do or see while on a layover in Taipei City?

    Taipei 101, Shilin Night Market, and Raohe Street Night Market are the most popular attractions in Taipei City if you're in need of something to do during your layover. Taipei 101, Shilin Night Market, and Raohe Street Night Market can be visited by traveling about 21.0 mi, 18.3 mi, and 21.6 mi respectively from Taipei City Taiwan Taoyuan Intl. Travelers can book a car rental at Taipei City Taiwan Taoyuan Intl for about $70 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Seattle to Hanoi flights?

  • Can I find deals for flights from Seattle to Hanoi that include hotel bookings?

    Yes. In addition to deals on Seattle to Hanoi flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Hanoi?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Hanoi.

  • Can I find deals for business class flights from Seattle to Hanoi?

    Yes. Cheapflights offers flight deals from Seattle to Hanoi by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Hanoi?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Hanoi (average of $542). Flying from Seattle to Hanoi in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 8 airlines flying from Seattle to Hanoi

Discover the top 8 airlines that operate flights from Seattle to Hanoi. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$628Average$820FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$637Average$727FlexibilityNo cancel feeOn-time76%
Philippine AirlinesCheapest$652Average$685FlexibilityNo cancel feeOn-time60%
Korean AirCheapest$704Average$899FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$707Average$827FlexibilityNo cancel feeOn-time70%
DeltaCheapest$764Average$965FlexibilityNo cancel feeOn-timeN/A
STARLUX AirlinesCheapest$771Average$888FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$783Average$937FlexibilityNo cancel feeOn-time74%

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