Which airport is the most popular layover for flights between Seattle and Hanoi?

Incheon (ICN) was the most common stop: 47% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to Hanoi?

Flights via Singapore (SIN) offer the lowest average round-trip price of $835.

Which layover airport has the shortest travel time from Seattle to Hanoi?

Flights connecting via Tokyo (NRT) have the shortest average one-way travel time: 19h 20m.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Hanoi Noibai?

Singapore Airlines, Philippine Airlines, and Asiana Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Hanoi Noibai

What airlines fly to Hanoi?

Asiana Airlines, China Airlines and EVA Air are the top three most popular airlines that fly to Hanoi from Seattle according to our data. Asiana Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Hanoi. Keep in mind that there are 8 different airlines that fly to Hanoi on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Seattle to Hanoi?

Taipei City (TPE) has the shortest average layover time for this route: 3h 13m.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport?

There are 7 operators available for flights from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport as of September 2025.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport.

What documentation or ID do you need to fly to Hanoi Noibai Airport?

The travel and health documents required for your trip to Hanoi Noibai Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Hanoi Noibai Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$277 Cheap Flights from Seattle to Hanoi in 2025/26

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Find the cheapest flights from Seattle to Hanoi

Round-trip

One-way

Last minute

Cheap round-trip flights

8:45 am - 11:30 amSEA-HAN

35h 45m1 stop

12:45 pm - 7:10 amHAN-SEA

33h 25m1 stop

$628Singapore Airlines

Find Deal

Tue, Jan 6 - Thu, Jan 22

8:45 am - 5:25 pmSEA-HAN

41h 40m1 stop

6:25 pm - 8:10 amHAN-SEA

27h 45m1 stop

$642Singapore Airlines

Find Deal

Thu, Mar 5 - Sat, Mar 14

12:10 am - 1:10 pmSEA-HAN

22h 00m1 stop

11:30 pm - 1:55 pmHAN-SEA

29h 25m1 stop

$668Asiana Airlines

Find Deal

Mon, Jan 5 - Thu, Jan 22

12:10 am - 10:00 pmSEA-HAN

31h 50m1 stop

11:30 pm - 1:55 pmHAN-SEA

29h 25m1 stop

$677Asiana Airlines

Find Deal

Tue, Oct 28 - Wed, Nov 5

12:10 am - 10:35 amSEA-HAN

19h 25m1 stop

11:35 am - 6:10 pmHAN-SEA

21h 35m1 stop

$707China Airlines

Find Deal

Mon, Feb 23 - Tue, Mar 3

8:15 pm - 9:45 pmSEA-HAN

34h 30m2 stops

11:05 pm - 8:31 pmHAN-SEA

36h 26m2 stops

$721Korean Air

Find Deal

Sun, Feb 22 - Wed, Mar 4

7:10 am - 9:45 pmSEA-HAN

24h 35m2 stops

12:20 pm - 9:00 amHAN-SEA

35h 40m1 stop

$738Korean Air

Find Deal

Wed, Oct 29 - Wed, Nov 5

12:10 am - 4:30 pmSEA-HAN

25h 20m1 stop

5:30 pm - 6:10 pmHAN-SEA

15h 40m1 stop

$742China Airlines

Find Deal

Tue, Nov 18 - Thu, Nov 27

1:10 am - 5:15 pmSEA-HAN

26h 05m1 stop

6:20 pm - 6:10 pmHAN-SEA

14h 50m1 stop

$778EVA Air

Find Deal

Wed, Oct 29 - Wed, Nov 5

12:10 am - 5:15 pmSEA-HAN

26h 05m1 stop

12:35 pm - 6:10 pmHAN-SEA

20h 35m1 stop

$784EVA Air

Find Deal

Wed, Nov 19 - Wed, Nov 26

Singapore Airlines flights from Seattle to Hanoi

Our best Singapore Airlines deals on Seattle to Hanoi flight tickets

Singapore Airlines

Jan 6

SEA8:45 amSeattle/Tacoma Intl

35h 45m

1 stop

HAN11:30 amHanoi Noibai

Jan 22

HAN12:45 pmHanoi Noibai

33h 25m

1 stop

SEA7:10 amSeattle/Tacoma Intl

$628

Find similar

Singapore Airlines

Mar 5

SEA8:45 amSeattle/Tacoma Intl

41h 40m

1 stop

HAN5:25 pmHanoi Noibai

Mar 14

HAN6:25 pmHanoi Noibai

27h 45m

1 stop

SEA8:10 amSeattle/Tacoma Intl

$642

Find similar

Philippine Airlines flights from Seattle to Hanoi

Our best Philippine Airlines deals on Seattle to Hanoi flight tickets

Philippine Airlines

Sep 21

SEA11:35 pmSeattle/Tacoma Intl

35h 55m

1 stop

HAN1:30 amHanoi Noibai

Oct 4

HAN2:30 amHanoi Noibai

30h 45m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$629

Find similar

Philippine Airlines

Sep 24

SEA11:35 pmSeattle/Tacoma Intl

35h 10m

1 stop

HAN12:45 amHanoi Noibai

Oct 14

HAN2:30 amHanoi Noibai

30h 45m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$643

Find similar

Philippine Airlines

Sep 21

SEA11:35 pmSeattle/Tacoma Intl

35h 55m

1 stop

HAN1:30 amHanoi Noibai

Oct 4

HAN2:30 amHanoi Noibai

30h 45m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$645

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 1/6

8:45 am-11:30 am

1 stop35h 45m

Hanoi Noibai

Thu 1/22

12:45 pm-7:10 am

1 stop33h 25m

$628

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 3/5

8:45 am-5:25 pm

1 stop41h 40m

Hanoi Noibai

Sat 3/14

6:25 pm-8:10 am

1 stop27h 45m

$642

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Mon 1/5

12:10 am-1:10 pm

1 stop22h 00m

Hanoi Noibai

Thu 1/22

11:30 pm-1:55 pm

1 stop29h 25m

$668

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 10/28

12:10 am-10:00 pm

1 stop31h 50m

Hanoi Noibai

Wed 11/5

11:30 pm-1:55 pm

1 stop29h 25m

$677

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Mon 2/23

12:10 am-10:35 am

1 stop19h 25m

Hanoi Noibai

Tue 3/3

11:35 am-6:10 pm

1 stop21h 35m

$707

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sun 2/22

8:15 pm-9:45 pm

2 stops34h 30m

Hanoi Noibai

Wed 3/4

11:05 pm-8:31 pm

2 stops36h 26m

$721

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 10/29

7:10 am-9:45 pm

2 stops24h 35m

Hanoi Noibai

Wed 11/5

12:20 pm-9:00 am

1 stop35h 40m

$738

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 11/18

12:10 am-4:30 pm

1 stop25h 20m

Hanoi Noibai

Thu 11/27

5:30 pm-6:10 pm

1 stop15h 40m

$742

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 10/29

1:10 am-5:15 pm

1 stop26h 05m

Hanoi Noibai

Wed 11/5

6:20 pm-6:10 pm

1 stop14h 50m

$778

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 11/19

12:10 am-5:15 pm

1 stop26h 05m

Hanoi Noibai

Wed 11/26

12:35 pm-6:10 pm

1 stop20h 35m

$784

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Seattle to Hanoi

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Seattle and Hanoi?

What is the cheapest month to fly to Hanoi?

The cheapest month to fly to Hanoi from Seattle is in September. Flight prices, which tend to average around $768, are often lower during this time because this is during the off-season. If you’re not able to fly to Hanoi in September, then April is your next best option. Flight prices from Seattle to Hanoi during April average around $783.

What is the cheapest day to depart on your flight to Hanoi?

According to our data, Tuesday is the cheapest day to fly to Hanoi from Seattle. The lowest ticket price found for a Tuesday departure recently was $836. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Hanoi on Monday is $1,201.

What is the cheapest time of day to depart on your flight to Hanoi?

Our most recent data shows that the best time of day to fly to Hanoi is in the morning. Flights from Seattle to Hanoi during this time can be as low as $971. Try not to purchase tickets in the afternoon because they tend to be around $1,125. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Hanoi?

You are more likely to see cheaper flights to Hanoi from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Hanoi for around $967 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Hanoi from Seattle for as low as $734 on momondo.

Can stopping save me money on Seattle to Hanoi flights?

You could potentially save up to 8% on your flight if you consider stops on a Seattle to Hanoi flight.

How have Seattle to Hanoi flight prices changed over time?

As of September 2025, prices for Seattle to Hanoi flights are approximately 33% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Hanoi

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Hanoi according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Hanoi (SEA to HAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Hanoi

Direct flights	None

There are no direct flights from Seattle to Hanoi. There are no popular flight routes from Seattle to Hanoi.

Search flight deals

How far is Seattle/Tacoma Intl to Hanoi Noibai by plane?
The distance between Seattle/Tacoma Intl and Hanoi Noibai is about 6829.4 mi. Flights usually cover this in 19h 25m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport?
There are 7 operators available for flights from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport as of September 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport.
What documentation or ID do you need to fly to Hanoi Noibai Airport?
The travel and health documents required for your trip to Hanoi Noibai Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Hanoi Noibai Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Seattle to Hanoi?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Hanoi is Asiana Airlines (30% of total bookings). The next most popular airlines are China Airlines (21%), EVA Air (16%), and Korean Air (13%).

Best airlines flying from Seattle to Hanoi

Compare and see reviews for airlines that fly from Seattle to Hanoi with momondo

Airline	Rating	Free Cancellation	Price
Asiana Airlines	PriceFrom $638	Free Cancellation	Rating 8.2 479 reviews	Search Asiana Airlines flights
Singapore Airlines	PriceFrom $682	Free Cancellation	Rating 8.1 1,365 reviews	Search Singapore Airlines flights
Japan Airlines	PriceFrom $717	Free Cancellation	Rating 8.3 1,559 reviews	Search Japan Airlines flights
Korean Air	PriceFrom $732	Free Cancellation	Rating 8.4 1,139 reviews	Search Korean Air flights
China Airlines	PriceFrom $747	Free Cancellation	Rating 8.3 767 reviews	Search China Airlines flights
Delta	PriceFrom $764	Free Cancellation	Rating 7.9 7,954 reviews	Search Delta flights
STARLUX Airlines	PriceFrom $790	Free Cancellation	Rating 8.9 211 reviews	Search STARLUX Airlines flights
EVA Air	PriceFrom $808	Free Cancellation	Rating 8.4 1,236 reviews	Search EVA Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Hanoi?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Hanoi. momondo saves you time and could save you money on your trip.

Can I find flights from Seattle to Hanoi with flexible booking policies on momondo?

All flight searches from Seattle to Hanoi on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Hanoi?

momondo helps you find the best flight between Seattle and Hanoi by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Hanoi right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Hanoi from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Hanoi trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Seattle to Hanoi from $277

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Hanoi departing on 2/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Singapore Airlines flights from Seattle to Hanoi

Our best Singapore Airlines deals on Seattle to Hanoi flight tickets

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Our best Philippine Airlines deals on Seattle to Hanoi flight tickets

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How to get the cheapest flight ticket from Seattle to Hanoi

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Seattle and Hanoi?

What is the cheapest month to fly to Hanoi?

What is the cheapest day to depart on your flight to Hanoi?

What is the cheapest time of day to depart on your flight to Hanoi?

How far in advance should I book a flight to Hanoi?

Can stopping save me money on Seattle to Hanoi flights?

You could potentially save up to 8% on your flight if you consider stops on a Seattle to Hanoi flight.

How have Seattle to Hanoi flight prices changed over time?

As of September 2025, prices for Seattle to Hanoi flights are approximately 33% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Hanoi Noibai?

Singapore Airlines, Philippine Airlines, and Asiana Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Hanoi Noibai

What airlines fly to Hanoi?

Which airport is the most popular layover for flights between Seattle and Hanoi?

Incheon (ICN) was the most common stop: 47% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to Hanoi?

Flights via Singapore (SIN) offer the lowest average round-trip price of $835.

Which layover airport has the shortest travel time from Seattle to Hanoi?

Flights connecting via Tokyo (NRT) have the shortest average one-way travel time: 19h 20m.

Which layover airport has the shortest connection time from Seattle to Hanoi?

Taipei City (TPE) has the shortest average layover time for this route: 3h 13m.

When to book flights from Seattle to Hanoi

Cheap Seattle to Hanoi (SEA to HAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Hanoi

Direct flights

How far is Seattle/Tacoma Intl to Hanoi Noibai by plane?

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport?

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport?

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport?

What documentation or ID do you need to fly to Hanoi Noibai Airport?

What is the most popular airline from Seattle to Hanoi?

Best airlines flying from Seattle to Hanoi

Compare and see reviews for airlines that fly from Seattle to Hanoi with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Hanoi?

Can I find flights from Seattle to Hanoi with flexible booking policies on momondo?

How can momondo help me find flights from Seattle to Hanoi?

I’m not ready to book a flight from Seattle to Hanoi right now. Can momondo alert me if prices change?

An easier way to manage your Hanoi trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Vietnam

Airports servicing Vietnam