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$274+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HAN
Mar 17 — Mar 241
Tue 3/17
Tue 3/24
1 adult, Economy
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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 February 15, 2026.

This Ovago deal was found by Cheapflights users on 2/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/810:15 am
SEA
-
HAN
1 stop35h 15m
Singapore Airlines
Thu 5/146:30 pm
HAN
-
SEA
1 stop28h 15m
Singapore Airlines
Deal found 2/15$509
This Ovago deal was found by Cheapflights users on 2/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1510:15 am
SEA
-
HAN
1 stop35h 15m
Singapore Airlines
Wed 9/912:50 pm
HAN
-
SEA
1 stop33h 55m
Singapore Airlines
Deal found 2/15$583
This CrystalTravel deal was found by Cheapflights users on 2/11. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:10 am
SEA
-
HAN
1 stop21h 00m
Asiana Airlines
Tue 12/81:30 pm
HAN
-
SEA
1 stop15h 25m
Asiana Airlines
Deal found 2/11$614
This Gurufare deal was found by Cheapflights users on 2/13. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:15 am
SEA
-
HAN
1 stop35h 15m
Singapore Airlines
Mon 9/73:20 pm
HAN
-
SEA
1 stop31h 25m
Singapore Airlines
Deal found 2/13$615
This CrystalTravel deal was found by Cheapflights users on 2/13. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1612:10 am
SEA
-
HAN
1 stop21h 00m
Asiana Airlines
Tue 11/241:30 pm
HAN
-
SEA
1 stop15h 25m
Asiana Airlines
Deal found 2/13$617
This oojo deal was found by Cheapflights users on 2/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1412:55 am
SEA
-
HAN
1 stop31h 05m
Asiana Airlines
Wed 9/911:30 pm
HAN
-
SEA
1 stop29h 25m
Asiana Airlines
Deal found 2/12$624
This oojo deal was found by Cheapflights users on 2/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/312:55 am
SEA
-
HAN
1 stop31h 05m
Asiana Airlines
Tue 5/121:25 pm
HAN
-
SEA
1 stop15h 30m
Asiana Airlines
Deal found 2/12$625
This oojo deal was found by Cheapflights users on 2/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2711:45 am
SEA
-
HAN
1 stop32h 10m
Cathay Pacific
Tue 5/510:55 am
HAN
-
SEA
1 stop37h 10m
Cathay Pacific
Deal found 2/13$626
This FlightHub deal was found by Cheapflights users on 2/12. 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.
Mon 10/1211:45 am
SEA
-
HAN
1 stop32h 10m
Cathay Pacific
Tue 10/207:10 pm
HAN
-
SEA
1 stop28h 55m
Cathay Pacific
Deal found 2/12$627
This Korean Air deal was found by Cheapflights users on 2/12. 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.
Thu 11/511:00 am
SEA
-
HAN
1 stop19h 45m
Korean Air
Sun 11/1511:05 pm
HAN
-
SEA
1 stop24h 55m
Korean Air
Deal found 2/12$630
This Justfly.com deal was found by Cheapflights users on 2/13. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:45 am
SEA
-
HAN
1 stop32h 10m
Cathay Pacific
Tue 4/2110:55 am
HAN
-
SEA
1 stop37h 10m
Cathay Pacific
Deal found 2/13$632
This Korean Air deal was found by Cheapflights users on 2/14. 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.
Mon 11/27:20 am
SEA
-
HAN
2 stops23h 25m
Korean Air
Wed 11/2512:20 pm
HAN
-
SEA
1 stop35h 40m
Korean Air
Deal found 2/14$635

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 February 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$509
(Ovago)

One-way from

$274
(Gurufare)

Popular in

December

Cheapest in

September

Average price

$779
Provider with most accurate pricing for Seattle/Tacoma Intl-Hanoi Noibai flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Hanoi Noibai flights.
Search Deals
From Seattle/Tacoma Intl to Hanoi Noibai
Search Deals
One-way flight from Seattle/Tacoma Intl to Hanoi Noibai
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 15, 2026.
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

Tue 4/7

7:15 am-9:35 pm

2 stops24h 20m

Hanoi Noibai

Tue 4/14

11:10 pm-2:51 pm

2 stops29h 41m

$646

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 4/9

7:59 pm-9:35 pm

2 stops35h 36m

Hanoi Noibai

Tue 4/21

11:10 pm-6:26 pm

2 stops33h 16m

$666

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 4/9

7:59 pm-9:35 pm

2 stops35h 36m

Hanoi Noibai

Mon 4/20

11:10 pm-5:16 pm

2 stops32h 06m

$666

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 5/6

12:50 pm-9:35 pm

1 stop18h 45m

Hanoi Noibai

Sat 5/16

12:05 pm-8:30 pm

2 stops22h 25m

$681

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 4/8

1:00 pm-9:35 pm

1 stop18h 35m

Hanoi Noibai

Wed 4/15

11:10 pm-1:07 pm

1 stop27h 57m

$706

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Mon 4/6

12:55 am-10:00 pm

1 stop31h 05m

Hanoi Noibai

Thu 4/16

1:25 pm-2:55 pm

1 stop15h 30m

$730

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sun 3/8

12:10 am-10:25 pm

1 stop32h 15m

Hanoi Noibai

Wed 3/18

1:30 pm-2:55 pm

1 stop15h 25m

$730

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 4/30

11:45 am-9:55 am

1 stop32h 10m

Hanoi Noibai

Tue 5/19

10:55 am-11:42 pm

2 stops26h 47m

$735

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 4/30

11:10 pm-1:15 pm

1 stop24h 05m

Hanoi Noibai

Mon 5/18

1:45 am-8:05 pm

1 stop32h 20m

$740

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 4/30

8:41 am-6:10 pm

2 stops43h 29m

Hanoi Noibai

Tue 5/19

7:10 pm-10:05 am

1 stop28h 55m

$743

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/15

Showing 1-10 of 19 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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
Justfly.comPrice Accuracy3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Hanoi flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 July is currently the most expensive (average of $1,019). 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.

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 February 15, 2026.
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.
STARLUX Airlines
8.9
Very good
274 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Food

8.7

Comfort

8.9

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
STARLUX Airlines
8.9
Very good
274 reviews
STARLUX Airlines
8.9
Very good
274 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Food

8.7

Comfort

8.9

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
EVA Air
8.4
Very good
1,353 reviews
STARLUX Airlines
8.9
Very good
274 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Food

8.7

Comfort

8.9

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Korean Air
8.4
Very good
1,191 reviews
STARLUX Airlines
8.9
Very good
274 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Food

8.7

Comfort

8.9

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
China Airlines
8.3
Very good
804 reviews
STARLUX Airlines
8.9
Very good
274 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Food

8.7

Comfort

8.9

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Asiana Airlines
8.1
Very good
503 reviews
STARLUX Airlines
8.9
Very good
274 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Food

8.7

Comfort

8.9

Crew

9.2

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

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 35h 36m. 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 Delta. Our recent data shows that you can find tickets from as low as $400 on this airline. Additional options worth looking into are Singapore Airlines and Korean Air, starting at $531 and $588 round-trip. Delta is priced at 57% 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?

    $280 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 Japan Airlines and Asiana Airlines, with prices starting from $315 and $332, respectively.

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

    Most of the time, Seattle to Hanoi flights that have layovers will stop in Taipei City.

  • 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 $80 per day to make their sightseeing more efficient.

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

    Of the flights from Seattle to Hanoi that have layovers, the fewest flights stop in Seoul.

  • 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 July is currently the most expensive (average of $1,019). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 February 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$400Average$974FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$531Average$744FlexibilityNo cancel feeOn-time81%
Korean AirCheapest$588Average$815FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$622Average$721FlexibilityNo cancel feeOn-time76%
Philippine AirlinesCheapest$638Average$682FlexibilityNo cancel feeOn-time60%
China AirlinesCheapest$659Average$807FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$758Average$863FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$783Average$959FlexibilityNo cancel feeOn-time74%

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