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.

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 Taipei City.

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.

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.

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.

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.

$305+ 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.

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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.

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

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

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

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

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

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

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

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

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

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

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

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 diciembre 12, 2025.

dom. 1/2511:00 amSEA - HAN

1 stop19h 45mKorean Air

dom. 2/112:20 pmHAN - SEA

1 stop35h 40mKorean Air

Deal found 12/11

$650

jue. 2/266:10 amSEA - HAN

2 stops42h 30mCathay Pacific

sáb. 3/711:05 amHAN - SEA

2 stops24h 42mCathay Pacific

Deal found 12/10

$906

dom. 1/257:30 pmSEA - HAN

2 stops35h 55mUnited Airlines

sáb. 1/3112:25 amHAN - SEA

3 stops35h 47mUnited Airlines

Deal found 12/11

$1,043

lun. 5/411:59 pmSEA - HAN

3 stops45h 31mMultiple Airlines

mar. 5/1212:40 pmHAN - SEA

2 stops35h 52mMultiple Airlines

Deal found 12/10

$1,165

vie. 1/28:45 amSEA - HAN

1 stop32h 50mSingapore Airlines

lun. 3/29:40 amHAN - SEA

1 stop36h 30mSingapore Airlines

Deal found 12/11

$1,248

mié. 3/187:15 amSEA - HAN

2 stops24h 30mKorean Air

dom. 4/512:00 pmHAN - SEA

1 stop36h 40mKorean Air

Deal found 12/9

$674

dom. 3/157:15 amSEA - HAN

2 stops24h 30mKorean Air

lun. 4/612:00 pmHAN - SEA

1 stop36h 40mKorean Air

Deal found 12/9

$724

dom. 3/111:00 amSEA - HAN

1 stop19h 45mKorean Air

jue. 3/1912:20 pmHAN - SEA

2 stops21h 42mKorean Air

Deal found 12/11

$730

lun. 3/912:00 pmSEA - HAN

1 stop19h 45mKorean Air

jue. 3/1212:20 pmHAN - SEA

2 stops25h 01mKorean Air

Deal found 12/10

$743

jue. 1/15:59 pmSEA - HAN

2 stops33h 31mCathay Pacific

lun. 3/27:30 pmHAN - SEA

2 stops40h 28mCathay Pacific

Deal found 12/11

$1,062

jue. 1/18:45 amSEA - HAN

1 stop41h 40mMultiple Airlines

lun. 3/26:30 pmHAN - SEA

2 stops37h 28mMultiple Airlines

Deal found 12/10

$1,228

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

Last-minute flights from Seattle to Hanoi
Discover last-minute flight deals from Seattle to Hanoi. Data last updated diciembre 12, 2025 and is based on user searches.

jue. 1/83:45 pmSEA - HAN

1 stop40h 20mANA

mié. 1/1412:25 amHAN - SEA

1 stop27h 55mANA

Deal found 12/10

$733

sáb. 1/1712:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

mar. 1/2711:50 pmHAN - SEA

1 stop29h 05mAsiana Airlines

Deal found 12/10

$684

sáb. 1/1712:10 amSEA - HAN

1 stop21h 00mAsiana Airlines

mar. 2/311:50 pmHAN - SEA

1 stop29h 05mAsiana Airlines

Deal found 12/11

$689

dom. 1/187:15 amSEA - HAN

2 stops23h 30mKorean Air

mar. 1/2711:05 pmHAN - SEA

1 stop24h 55mKorean Air

Deal found 12/10

$692

dom. 1/186:18 amSEA - HAN

2 stops25h 47mANA

lun. 2/212:25 amHAN - SEA

1 stop27h 55mANA

Deal found 12/11

$708

dom. 1/186:18 amSEA - HAN

2 stops25h 47mANA

lun. 1/2612:25 amHAN - SEA

2 stops30h 19mANA

Deal found 12/10

$740

mié. 1/2112:10 amSEA - HAN

1 stop31h 15mAsiana Airlines

jue. 1/2911:50 pmHAN - SEA

1 stop29h 05mAsiana Airlines

Deal found 12/10

$656

jue. 1/227:15 amSEA - HAN

2 stops23h 30mKorean Air

jue. 1/2911:05 pmHAN - SEA

1 stop24h 55mKorean Air

Deal found 12/10

$734

dom. 1/2511:00 amSEA - HAN

1 stop19h 45mKorean Air

dom. 2/112:20 pmHAN - SEA

1 stop35h 40mKorean Air

Deal found 12/11

$650

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 diciembre 12, 2025.

sáb. 3/219:45 amSEA - HAN

1 stop41h 35mSingapore Airlines

Deal found 12/9

$305

dom. 3/2210:30 pmSEA - HAN

1 stop24h 10mPhilippine Airlines

Deal found 12/10

$323

jue. 1/2911:00 amSEA - HAN

1 stop33h 10mKorean Air

Deal found 12/10

$355

vie. 3/2010:30 pmSEA - HAN

1 stop37h 15mPhilippine Airlines

Deal found 12/10

$399

vie. 2/611:00 amSEA - HAN

2 stops30h 50mMultiple Airlines

Deal found 12/10

$408

dom. 3/227:20 amSEA - HAN

2 stops24h 25mKorean Air

Deal found 12/9

$425

jue. 2/57:15 amSEA - HAN

2 stops23h 30mDelta

Deal found 12/10

$433

jue. 3/191:10 amSEA - HAN

1 stop25h 20mChina Airlines

Deal found 12/9

$438

jue. 2/510:05 amSEA - HAN

3 stops43h 10mMultiple Airlines

Deal found 12/10

$450

Find flight deals from Seattle to Hanoi

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.

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. 19% potential increase in price ($236 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

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

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 December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Ovago	Price Accuracy2 stars	Trust Score*2 stars
CheapOair	Price Accuracy3 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 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?

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

243 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

STARLUX Airlines

8.9

Very good

243 reviews

STARLUX Airlines

8.9

Very good

243 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

EVA Air

8.5

Very good

1,296 reviews

STARLUX Airlines

8.9

Very good

243 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Korean Air

8.4

Very good

1,184 reviews

STARLUX Airlines

8.9

Very good

243 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

China Airlines

8.2

Very good

788 reviews

STARLUX Airlines

8.9

Very good

243 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Asiana Airlines

8.2

Very good

492 reviews

STARLUX Airlines

8.9

Very good

243 reviews

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

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?
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 $70 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 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to Hanoi

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Top 8 airlines flying from Seattle to Hanoi

Airline	Cheapest	Average	Flexibility	On-time
Singapore Airlines	Cheapest$628	Average$820	FlexibilityNo cancel fee	On-time81%
Asiana Airlines	Cheapest$637	Average$727	FlexibilityNo cancel fee	On-time76%
Philippine Airlines	Cheapest$652	Average$685	FlexibilityNo cancel fee	On-time60%
Korean Air	Cheapest$704	Average$899	FlexibilityNo cancel fee	On-time81%
China Airlines	Cheapest$707	Average$827	FlexibilityNo cancel fee	On-time70%
Delta	Cheapest$764	Average$965	FlexibilityNo cancel fee	On-timeN/A
STARLUX Airlines	Cheapest$771	Average$888	FlexibilityNo cancel fee	On-timeN/A
EVA Air	Cheapest$783	Average$937	FlexibilityNo cancel fee	On-time74%

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$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.

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 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 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 diciembre 12, 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 diciembre 12, 2025.

Find 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 December.

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?

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

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?

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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Alternative routes for Seattle to Hanoi

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Top 8 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 diciembre 12, 2025.