How long is the flight from Seattle to Hanoi?

Delta, Asiana Airlines, and Korean Air can get you from Seattle to Hanoi in just under 31h 15m. Your travel time can differ by up to 1h 40m. Airlines will cover a distance of 6827 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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 Korean Air, starting at $628 and $722 round-trip. Singapore Airlines is priced at 33% lower than the current average price of a flight leaving 3 months from now.

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.

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).

What are the most popular airlines that fly from Seattle to Hanoi?

Consider Asiana Airlines, EVA Air or China Airlines when booking your flight. These represent the most popular airlines when flying from Seattle to Hanoi.

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 Seoul.

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 Taipei City.

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

Lotte World, Dongdaemun Market, and Bukchon Hanok Village are the most popular attractions in Seoul if you're in need of something to do during your layover. Lotte World, Dongdaemun Market, and Bukchon Hanok Village can be visited by traveling about 35.7 mi, 31.6 mi, and 30.6 mi respectively from Incheon Intl. Travelers can book a car rental at Incheon Intl for about $57 per day to make their sightseeing more efficient.

Most accurate provider : When it comes to deals on Seattle-Hanoi flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Hanoi flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$338+ Flights from Seattle to Hanoi

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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.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Hanoi Noibai are usually found in September or February, booked 89 days in advance, depart on a Tuesday or Friday and return on a Sunday

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 October 27, 2025.

Sun 11/99:30 pmSEA - HAN

1 stop37h 15mPhilippine Airlines

Tue 11/182:50 amHAN - SEA

1 stop30h 50mPhilippine Airlines

Deal found 10/27

$659

Tue 11/259:30 pmSEA - HAN

1 stop37h 15mPhilippine Airlines

Wed 12/242:50 amHAN - SEA

1 stop30h 50mPhilippine Airlines

Deal found 10/27

$665

Tue 11/259:30 pmSEA - HAN

1 stop37h 15mPhilippine Airlines

Mon 12/222:50 amHAN - SEA

1 stop30h 50mPhilippine Airlines

Deal found 10/27

$672

Mon 11/2412:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Thu 12/251:30 pmHAN - SEA

1 stop15h 25mAsiana Airlines

Deal found 10/27

$689

Sun 11/239:30 pmSEA - HAN

1 stop24h 10mPhilippine Airlines

Wed 12/242:50 amHAN - SEA

1 stop30h 50mPhilippine Airlines

Deal found 10/25

$691

Sat 11/2912:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Thu 12/111:30 pmHAN - SEA

1 stop15h 25mAsiana Airlines

Deal found 10/27

$693

Mon 11/2412:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Wed 12/2411:50 pmHAN - SEA

1 stop29h 05mAsiana Airlines

Deal found 10/24

$701

Fri 11/289:30 pmSEA - HAN

1 stop37h 15mPhilippine Airlines

Thu 12/251:55 pmHAN - SEA

1 stop19h 45mPhilippine Airlines

Deal found 10/25

$711

Mon 11/2412:10 amSEA - HAN

1 stop25h 20mChina Airlines

Thu 12/2511:35 amHAN - SEA

1 stop21h 35mChina Airlines

Deal found 10/25

$715

Mon 11/2412:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Fri 12/2611:50 pmHAN - SEA

1 stop29h 05mAsiana Airlines

Deal found 10/27

$720

Sat 11/2912:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Mon 12/291:30 pmHAN - SEA

1 stop15h 25mAsiana Airlines

Deal found 10/27

$723

Sat 11/1512:10 amSEA - HAN

1 stop21h 00mAsiana Airlines

Sat 12/131:30 pmHAN - SEA

1 stop15h 25mAsiana Airlines

Deal found 10/27

$727

Best flights from Seattle to Hanoi
Discover carefully curated flight deals from Seattle to Hanoi that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2025.

Thu 11/2711:15 amSEA - HAN

1 stop32h 55mDelta

Mon 12/2212:20 pmHAN - SEA

1 stop16h 00mDelta

Deal found 10/24

$729

Sat 11/2212:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Mon 12/221:30 pmHAN - SEA

1 stop15h 25mAsiana Airlines

Deal found 10/25

$732

Thu 11/2712:25 pmSEA - HAN

2 stops31h 45mKorean Air

Wed 12/2412:20 pmHAN - SEA

1 stop35h 40mKorean Air

Deal found 10/25

$738

Mon 11/2411:15 amSEA - HAN

1 stop19h 30mDelta

Mon 12/2211:05 pmHAN - SEA

1 stop29h 15mDelta

Deal found 10/24

$729

Sat 11/2212:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Thu 12/251:30 pmHAN - SEA

1 stop15h 25mAsiana Airlines

Deal found 10/25

$732

Wed 11/267:10 amSEA - HAN

2 stops37h 00mKorean Air

Wed 12/2411:05 pmHAN - SEA

1 stop24h 55mKorean Air

Deal found 10/25

$738

Sun 11/237:59 pmSEA - HAN

2 stops34h 46mKorean Air

Wed 12/2411:05 pmHAN - SEA

1 stop24h 55mKorean Air

Deal found 10/25

$738

Sat 11/2911:15 amSEA - HAN

1 stop19h 30mDelta

Tue 12/2311:05 pmHAN - SEA

1 stop29h 15mDelta

Deal found 10/25

$770

Tue 11/257:10 amSEA - HAN

2 stops23h 35mKorean Air

Tue 12/2311:05 pmHAN - SEA

1 stop24h 55mKorean Air

Deal found 10/25

$738

Thu 11/272:11 pmSEA - HAN

2 stops29h 59mKorean Air

Tue 12/2311:05 pmHAN - SEA

2 stops32h 52mKorean Air

Deal found 10/25

$749

Tue 11/255:59 pmSEA - HAN

2 stops26h 11mKorean Air

Mon 12/2212:20 pmHAN - SEA

2 stops42h 47mKorean Air

Deal found 10/25

$749

Last-minute flights from Seattle to Hanoi
Discover last-minute flight deals from Seattle to Hanoi. Data last updated October 27, 2025 and is based on user searches.

Sun 11/99:30 pmSEA - HAN

1 stop37h 15mPhilippine Airlines

Tue 11/182:50 amHAN - SEA

1 stop30h 50mPhilippine Airlines

Deal found 10/27

$659

Sat 11/1512:10 amSEA - HAN

1 stop21h 00mAsiana Airlines

Sat 12/131:30 pmHAN - SEA

1 stop15h 25mAsiana Airlines

Deal found 10/27

$727

Sun 11/239:30 pmSEA - HAN

1 stop24h 10mPhilippine Airlines

Wed 12/242:50 amHAN - SEA

1 stop30h 50mPhilippine Airlines

Deal found 10/25

$691

Mon 11/2412:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Thu 12/251:30 pmHAN - SEA

1 stop15h 25mAsiana Airlines

Deal found 10/27

$689

Mon 11/2412:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Wed 12/2411:50 pmHAN - SEA

1 stop29h 05mAsiana Airlines

Deal found 10/24

$701

Mon 11/2412:10 amSEA - HAN

1 stop25h 20mChina Airlines

Thu 12/2511:35 amHAN - SEA

1 stop21h 35mChina Airlines

Deal found 10/25

$715

Mon 11/2412:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Fri 12/2611:50 pmHAN - SEA

1 stop29h 05mAsiana Airlines

Deal found 10/27

$720

Tue 11/259:30 pmSEA - HAN

1 stop37h 15mPhilippine Airlines

Tue 12/232:50 amHAN - SEA

1 stop30h 50mPhilippine Airlines

Deal found 10/25

$665

Tue 11/259:30 pmSEA - HAN

1 stop37h 15mPhilippine Airlines

Mon 12/222:50 amHAN - SEA

1 stop30h 50mPhilippine Airlines

Deal found 10/25

$672

Fri 11/289:30 pmSEA - HAN

1 stop37h 15mPhilippine Airlines

Thu 12/251:55 pmHAN - SEA

1 stop19h 45mPhilippine Airlines

Deal found 10/25

$711

Sat 11/2912:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Thu 12/111:30 pmHAN - SEA

1 stop15h 25mAsiana Airlines

Deal found 10/27

$693

Sat 11/2912:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

Mon 12/291:30 pmHAN - SEA

1 stop15h 25mAsiana Airlines

Deal found 10/27

$723

One-way flights from Seattle to Hanoi
Search for one-way flight options from Seattle to Hanoi. Find affordable one-way fares based on user searches. Data last updated October 27, 2025.

Fri 1/28:45 amSEA - HAN

1 stop35h 45mSingapore Airlines

Deal found 10/26

$338

Mon 12/87:21 pmSEA - HAN

3 stops28h 24mMultiple Airlines

Deal found 10/25

$349

Mon 11/312:10 amSEA - HAN

1 stop25h 20mChina Airlines

Deal found 10/25

$400

Sat 11/2912:10 amSEA - HAN

1 stop19h 25mChina Airlines

Deal found 10/25

$434

Sun 11/3011:15 amSEA - HAN

1 stop32h 55mDelta

Deal found 10/25

$436

Tue 11/411:30 pmSEA - HAN

1 stop21h 05mEVA Air

Deal found 10/27

$444

Sun 12/72:25 pmSEA - HAN

3 stops44h 20mMultiple Airlines

Deal found 10/25

$458

Mon 12/13:40 pmSEA - HAN

2 stops48h 50mMultiple Airlines

Deal found 10/25

$464

Cheap flight deals from Seattle to Hanoi

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$583 (Justfly.com)
One-way from	$338 (FlightHub)
Popular in	June
Cheapest in	September
Average price	$852

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. 20% potential increase in price ($248 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($44 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 11/27

11:15 am-11:10 am

1 stop32h 55m

Hanoi Noibai

Mon 12/22

12:20 pm-1:20 pm

1 stop16h 00m

$729

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Mon 11/24

11:15 am-9:45 pm

1 stop19h 30m

Hanoi Noibai

Mon 12/22

11:05 pm-1:20 pm

1 stop29h 15m

$729

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sat 11/22

12:10 am-10:25 pm

1 stop31h 15m

Hanoi Noibai

Mon 12/22

1:30 pm-1:55 pm

1 stop15h 25m

$732

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sat 11/22

12:10 am-10:25 pm

1 stop31h 15m

Hanoi Noibai

Thu 12/25

1:30 pm-1:55 pm

1 stop15h 25m

$732

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 11/27

12:25 pm-11:10 am

2 stops31h 45m

Hanoi Noibai

Wed 12/24

12:20 pm-9:00 am

1 stop35h 40m

$738

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 11/26

7:10 am-11:10 am

2 stops37h 00m

Hanoi Noibai

Wed 12/24

11:05 pm-9:00 am

1 stop24h 55m

$738

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sun 11/23

7:59 pm-9:45 pm

2 stops34h 46m

Hanoi Noibai

Wed 12/24

11:05 pm-9:00 am

1 stop24h 55m

$738

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 11/25

7:10 am-9:45 pm

2 stops23h 35m

Hanoi Noibai

Tue 12/23

11:05 pm-9:00 am

1 stop24h 55m

$738

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 11/27

2:11 pm-11:10 am

2 stops29h 59m

Hanoi Noibai

Tue 12/23

11:05 pm-4:57 pm

2 stops32h 52m

$749

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 11/25

5:59 pm-11:10 am

2 stops26h 11m

Hanoi Noibai

Mon 12/22

12:20 pm-4:07 pm

2 stops42h 47m

$749

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/25

Showing 1-10 of 19 results

Compare providers for flights from Seattle to Hanoi

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Hanoi in October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
Trip.com	Price Accuracy2 stars	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*3 stars
Cheapfaremart	Price 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Hanoi flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $1,205). 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?

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

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

219 reviews

Reviews

1 / 8

10.0

Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

STARLUX Airlines

8.9

Very good

219 reviews

STARLUX Airlines

8.9

Very good

219 reviews

Reviews

1 / 8

10.0

Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

EVA Air

8.4

Very good

1,261 reviews

STARLUX Airlines

8.9

Very good

219 reviews

Reviews

1 / 8

10.0

Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

Korean Air

8.4

Very good

1,153 reviews

STARLUX Airlines

8.9

Very good

219 reviews

Reviews

1 / 8

10.0

Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

China Airlines

8.3

Very good

776 reviews

STARLUX Airlines

8.9

Very good

219 reviews

Reviews

1 / 8

10.0

Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

Asiana Airlines

8.2

Very good

485 reviews

STARLUX Airlines

8.9

Very good

219 reviews

Reviews

1 / 8

10.0

Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

Related info for your journey

How long is the flight from Seattle to Hanoi?
Delta, Asiana Airlines, and Korean Air can get you from Seattle to Hanoi in just under 31h 15m. Your travel time can differ by up to 1h 40m. Airlines will cover a distance of 6827 mi. Both multi-stop and nonstop flights can be found to your destination and back.
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 Korean Air, starting at $628 and $722 round-trip. Singapore Airlines is priced at 33% lower than the current average price of a flight leaving 3 months from now.
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 Seoul.
What are some popular things to do or see while on a layover in Seoul?
Lotte World, Dongdaemun Market, and Bukchon Hanok Village are the most popular attractions in Seoul if you're in need of something to do during your layover. Lotte World, Dongdaemun Market, and Bukchon Hanok Village can be visited by traveling about 35.7 mi, 31.6 mi, and 30.6 mi respectively from Incheon Intl. Travelers can book a car rental at Incheon Intl for about $57 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 Taipei City.
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 $1,205). 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

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Top 7 airlines flying from Seattle to Hanoi

Airline	Cheapest	Average	Flexibility	On-time
Singapore Airlines	Cheapest$628	Average$966	FlexibilityNo cancel fee	On-time81%
Asiana Airlines	Cheapest$628	Average$726	FlexibilityNo cancel fee	On-time76%
Korean Air	Cheapest$722	Average$892	FlexibilityNo cancel fee	On-time81%
China Airlines	Cheapest$741	Average$847	FlexibilityNo cancel fee	On-time70%
Delta	Cheapest$764	Average$784	FlexibilityNo cancel fee	On-timeN/A
STARLUX Airlines	Cheapest$775	Average$895	FlexibilityNo cancel fee	On-timeN/A
EVA Air	Cheapest$783	Average$935	FlexibilityNo cancel fee	On-time74%

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$338+ 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 1/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Hanoi with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Hanoi Noibai are usually found in September or February, booked 89 days in advance, depart on a Tuesday or Friday and return on a Sunday

Find flight deals from Seattle to Hanoi

Cheapest flights from Seattle to HanoiExplore 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 October 27, 2025.

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 October 27, 2025.

Cheap flight deals from Seattle to Hanoi

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Hanoi that are best for you.

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 October.

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.

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?

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

Reviews of airlines servicing Hanoi

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.

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?

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

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 Seoul?

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?

How can I find direct flights from Seattle to Hanoi?

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

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

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Top 7 airlines flying from Seattle to Hanoi

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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 October 27, 2025.