HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Hanoi

$387+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HAN
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Hanoi with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Seattle/Tacoma Intl to Hanoi Noibai are usually found in February or October, booked 74 days in advance, depart on a Tuesday or Friday and return on a Sunday

Cheap 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 January 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$663
(Flightnetwork)

One-way from

$387
(oojo)

Popular in

June

Cheapest in

February

Average price

$910
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
High demand for flights, 23% potential price rise
Search Deals
Best time to find cheap flights, 3% potential price drop
Search Deals
Average for round-trip flights in January 2025
Search Deals

Find 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 January 21, 2025.

This Gotogate deal was found by Cheapflights users on 1/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/412:45 pmSEA - HAN
1 stop18h 40mAsiana Airlines
Tue 3/111:30 pmHAN - SEA
1 stop36h 25mAsiana Airlines
Deal found 1/19$661
This ScholarTrip deal was found by Cheapflights users on 1/20. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/510:15 amSEA - HAN
1 stop41h 20mSingapore Airlines
Mon 9/156:30 pmHAN - SEA
1 stop28h 15mSingapore Airlines
Deal found 1/20$737
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/47:00 amSEA - HAN
2 stops23h 40mMultiple Airlines
Tue 3/1111:00 pmHAN - SEA
2 stops26h 50mMultiple Airlines
Deal found 1/20$741
This Delta deal was found by Cheapflights users on 1/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/1610:44 amSEA - HAN
1 stop33h 26mDelta
Wed 2/2611:00 pmHAN - SEA
1 stop29h 30mDelta
Deal found 1/19$765
This Justfly.com deal was found by Cheapflights users on 1/20. 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.
Sun 2/23:45 pmSEA - HAN
1 stop40h 20mANA
Mon 2/1712:25 amHAN - SEA
1 stop27h 55mANA
Deal found 1/20$769
This Trip.com deal was found by Cheapflights users on 1/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/301:00 pmSEA - HAN
1 stop18h 35mKorean Air
Thu 4/312:15 pmHAN - SEA
1 stop36h 35mKorean Air
Deal found 1/19$781
This Booking.com deal was found by Cheapflights users on 1/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/312:10 amSEA - HAN
1 stop19h 25mChina Airlines
Tue 3/1111:35 amHAN - SEA
1 stop21h 40mChina Airlines
Deal found 1/20$803
This oojo deal was found by Cheapflights users on 1/19. 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 3/91:10 amSEA - HAN
1 stop26h 05mEVA Air
Wed 4/236:00 pmHAN - SEA
1 stop15h 30mEVA Air
Deal found 1/19$804
This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:35 amSEA - HAN
2 stops25h 40mUnited Airlines
Tue 10/1411:35 pmHAN - SEA
2 stops36h 18mUnited Airlines
Deal found 1/19$807
This Gurufare deal was found by Cheapflights users on 1/18. 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 3/117:10 amSEA - HAN
2 stops28h 35mChina Eastern
Wed 3/261:50 pmHAN - SEA
2 stops41h 03mChina Eastern
Deal found 1/18$849
This Gotogate deal was found by Cheapflights users on 1/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/412:05 amSEA - HAN
1 stop26h 20mSTARLUX Airlines
Wed 3/126:25 pmHAN - SEA
1 stop35h 40mSTARLUX Airlines
Deal found 1/19$851
This Japan Airlines deal was found by Cheapflights users on 1/19. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/248:30 amSEA - HAN
2 stops23h 20mJapan Airlines
Mon 10/1311:20 pmHAN - SEA
1 stop25h 05mJapan Airlines
Deal found 1/19$899

Find flights from Seattle to Hanoi within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 3/4

12:45 pm-10:25 pm

1 stop18h 40m

Hanoi Noibai

Tue 3/11

1:30 pm-11:55 am

1 stop36h 25m

$661

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 3/4

7:00 am-9:40 pm

2 stops23h 40m

Hanoi Noibai

Tue 3/11

11:00 pm-11:50 am

2 stops26h 50m

$741

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sun 2/16

10:44 am-11:10 am

1 stop33h 26m

Hanoi Noibai

Wed 2/26

11:00 pm-1:30 pm

1 stop29h 30m

$765

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sun 2/2

3:45 pm-11:05 pm

1 stop40h 20m

Hanoi Noibai

Mon 2/17

12:25 am-1:20 pm

1 stop27h 55m

$769

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sun 3/30

1:00 pm-9:35 pm

1 stop18h 35m

Hanoi Noibai

Thu 4/3

12:15 pm-10:50 am

1 stop36h 35m

$781

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Mon 3/3

12:10 am-10:35 am

1 stop19h 25m

Hanoi Noibai

Tue 3/11

11:35 am-7:15 pm

1 stop21h 40m

$803

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sun 3/9

1:10 am-5:15 pm

1 stop26h 05m

Hanoi Noibai

Wed 4/23

6:00 pm-7:30 pm

1 stop15h 30m

$804

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 3/11

7:10 am-1:45 am

2 stops28h 35m

Hanoi Noibai

Wed 3/26

1:50 pm-4:53 pm

2 stops41h 03m

$849

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 3/4

12:05 am-5:25 pm

1 stop26h 20m

Hanoi Noibai

Wed 3/12

6:25 pm-4:05 pm

1 stop35h 40m

$851

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 3/5

7:00 am-11:05 pm

2 stops25h 05m

Hanoi Noibai

Tue 3/11

12:25 am-9:15 pm

2 stops34h 50m

$865

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 22 results
1
2
3

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*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.

Travel insights for flights from Seattle to Hanoi

Get recent, data-driven insights about flights from Seattle to Hanoi including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Seattle to Hanoi?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Hanoi. Price data was last updated on January 17, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Hanoi, you should look to book at least 74 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $975). Flying from Seattle to Hanoi in December is currently the most expensive (average of $1,618). 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 January 21, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 14% on flights from Seattle to Hanoi by exploring options for tickets in the morning.

What is the cheapest day to fly from Seattle to Hanoi?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Hanoi. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Hanoi flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Hanoi by month

Plan your trip to Hanoi by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Hanoi ranges from 0.6 - 11.7 inches per month. August is typically the wettest month, when rainfall can reach 11.7 in. December is typically the driest time to visit Hanoi when rainfall is around 0.6 in.

Temperature in Hanoi by month

Plan your trip to Hanoi by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Hanoi, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 62.6 F).

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 January 21, 2025.
To help decide which airline to fly from Seattle to Hanoi, see what other customers have to say about China Airlines, Asiana Airlines and ANA. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
136 reviews

Entertainment

9.1

Boarding

9.1

Comfort

9.0

Crew

9.3

Overall

9.1

Food

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

STARLUX Airlines
9.1
Wonderful
136 reviews
STARLUX Airlines
9.1
Wonderful
136 reviews

Entertainment

9.1

Boarding

9.1

Comfort

9.0

Crew

9.3

Overall

9.1

Food

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

Korean Air
8.5
Very good
1,039 reviews
STARLUX Airlines
9.1
Wonderful
136 reviews

Entertainment

9.1

Boarding

9.1

Comfort

9.0

Crew

9.3

Overall

9.1

Food

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

EVA Air
8.4
Very good
1,255 reviews
STARLUX Airlines
9.1
Wonderful
136 reviews

Entertainment

9.1

Boarding

9.1

Comfort

9.0

Crew

9.3

Overall

9.1

Food

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

ANA
8.4
Very good
852 reviews
STARLUX Airlines
9.1
Wonderful
136 reviews

Entertainment

9.1

Boarding

9.1

Comfort

9.0

Crew

9.3

Overall

9.1

Food

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

China Airlines
8.2
Very good
737 reviews
STARLUX Airlines
9.1
Wonderful
136 reviews

Entertainment

9.1

Boarding

9.1

Comfort

9.0

Crew

9.3

Overall

9.1

Food

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

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.

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

    Our cheapest airline available from Seattle to Hanoi is Asiana Airlines. Our recent data shows that you can find tickets from as low as $663 on this airline. Additional options worth looking into are Delta and ANA, starting at $765 and $769 round-trip. Asiana Airlines is priced at 39% 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?

    $387 is the cheapest one-way deal found within the past few days, from Asiana Airlines. You may also be able to find cheap deals on Singapore Airlines and China Airlines, with prices starting from $399 and $453, 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 Incheon. Seattle to Hanoi flights stop in Taipei City the next most.

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

    G Tower, Wolmido Amusement Park, and Moraenae Market are the most popular attractions in Incheon if you're in need of something to do during your layover. G Tower, Wolmido Amusement Park, and Moraenae Market can be visited by traveling about 10.7 mi, 8.3 mi, and 14.7 mi respectively from Incheon Intl. Travelers can book a car rental at Incheon Intl for about $46 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Taipei City?

    The majority of Taipei City visitors spend their time at Taipei 101, Shilin Night Market, and Raohe Street Night Market. Taipei 101, Shilin Night Market, and Raohe Street Night Market can be accessed by traveling approximately 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 $85 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 Tokyo.

  • 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 $975). Flying from Seattle to Hanoi in December is currently the most expensive (average of $1,618). 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$640Average$821FlexibilityNo cancel feeOn-time76%
Singapore AirlinesCheapest$697Average$1,009FlexibilityNo cancel feeOn-time81%
DeltaCheapest$764Average$1,066FlexibilityNo cancel feeOn-timeN/A
Japan AirlinesCheapest$770Average$1,044FlexibilityNo cancel feeOn-time79%
China AirlinesCheapest$775Average$864FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$777Average$1,195FlexibilityNo cancel feeOn-time81%
STARLUX AirlinesCheapest$865Average$910FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$929Average$1,342FlexibilityNo cancel feeOn-time74%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.