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Cheap flights from Seattle to Hanoi from $307

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 1/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Hanoi

Cheap round-trip flights

Enter your travel dates to find the best prices.
Asiana Airlines Logo
12:10 am - 12:10 pmSEA-HAN
21h 00m1 stop
Asiana Airlines Logo
11:50 pm - 2:55 pmHAN-SEA
29h 05m1 stop
$599Asiana Airlines
Find Deal
sáb., feb. 28 - jue., mar. 19
Asiana Airlines Logo
12:10 am - 12:10 pmSEA-HAN
21h 00m1 stop
Asiana Airlines Logo
1:30 pm - 2:55 pmHAN-SEA
15h 25m1 stop
$630Asiana Airlines
Find Deal
dom., mar. 1 - lun., mar. 16
Asiana Airlines Logo
12:10 am - 10:25 pmSEA-HAN
31h 15m1 stop
Asiana Airlines Logo
11:50 pm - 1:55 pmHAN-SEA
29h 05m1 stop
$641Asiana Airlines
Find Deal
sáb., ene. 17 - dom., ene. 25
Korean Air Logo
11:00 am - 11:10 amSEA-HAN
33h 10m1 stop
Korean Air Logo
12:20 pm - 9:00 amHAN-SEA
35h 40m1 stop
$642Korean Air
Find Deal
lun., ene. 19 - sáb., ene. 31
Asiana Airlines Logo
12:10 am - 12:10 pmSEA-HAN
21h 00m1 stop
Asiana Airlines Logo
1:30 pm - 1:55 pmHAN-SEA
15h 25m1 stop
$648Asiana Airlines
Find Deal
sáb., feb. 21 - dom., mar. 1
Philippine Airlines Logo
11:05 pm - 1:50 amSEA-HAN
36h 45m1 stop
Philippine Airlines Logo
2:50 am - 8:10 pmHAN-SEA
31h 20m1 stop
$649Philippine Airlines
Find Deal
mar., abr. 7 - lun., abr. 27
Asiana Airlines Logo
12:10 am - 12:10 pmSEA-HAN
21h 00m1 stop
Asiana Airlines Logo
1:30 pm - 2:55 pmHAN-SEA
15h 25m1 stop
$659Asiana Airlines
Find Deal
mié., feb. 18 - lun., mar. 9
Asiana Airlines Logo
12:10 am - 10:25 pmSEA-HAN
31h 15m1 stop
Asiana Airlines Logo
1:30 pm - 1:55 pmHAN-SEA
15h 25m1 stop
$662Asiana Airlines
Find Deal
dom., ene. 18 - sáb., ene. 31
Singapore Airlines Logo
9:45 am - 5:25 pmSEA-HAN
41h 40m1 stop
Singapore Airlines Logo
9:40 am - 8:10 amHAN-SEA
36h 30m1 stop
$666Singapore Airlines
Find Deal
dom., mar. 22 - vie., mar. 27
Asiana Airlines Logo
12:10 am - 10:25 pmSEA-HAN
31h 15m1 stop
Asiana Airlines Logo
11:50 pm - 2:55 pmHAN-SEA
29h 05m1 stop
$667Asiana Airlines
Find Deal
lun., feb. 23 - mar., mar. 17

Asiana Airlines flights from Seattle to Hanoi

Our best Asiana Airlines deals on Seattle to Hanoi flight tickets
Asiana Airlines
Feb 28
SEA12:10 amSeattle/Tacoma Intl
21h 00m
1 stop
HAN12:10 pmHanoi Noibai
Mar 19
HAN11:50 pmHanoi Noibai
29h 05m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
$599
Find similar
Asiana Airlines
Mar 1
SEA12:10 amSeattle/Tacoma Intl
21h 00m
1 stop
HAN12:10 pmHanoi Noibai
Mar 16
HAN1:30 pmHanoi Noibai
15h 25m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
$630
Find similar
Asiana Airlines
Jan 17
SEA12:10 amSeattle/Tacoma Intl
31h 15m
1 stop
HAN10:25 pmHanoi Noibai
Jan 25
HAN11:50 pmHanoi Noibai
29h 05m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$641
Find similar

China Airlines flights from Seattle to Hanoi

Our best China Airlines deals on Seattle to Hanoi flight tickets
China Airlines
May 3
SEA1:10 amSeattle/Tacoma Intl
19h 25m
1 stop
HAN10:35 amHanoi Noibai
May 12
HAN5:50 pmHanoi Noibai
15h 40m
1 stop
SEA7:30 pmSeattle/Tacoma Intl
$691
Find similar
China Airlines
Mar 1
SEA12:10 amSeattle/Tacoma Intl
19h 10m
1 stop
HAN10:20 amHanoi Noibai
Mar 16
HAN11:20 amHanoi Noibai
21h 50m
1 stop
SEA7:10 pmSeattle/Tacoma Intl
$710
Find similar
China Airlines
Mar 12
SEA1:10 amSeattle/Tacoma Intl
19h 10m
1 stop
HAN10:20 amHanoi Noibai
Mar 16
HAN11:20 amHanoi Noibai
21h 50m
1 stop
SEA7:10 pmSeattle/Tacoma Intl
$743
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Hanoi that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated noviembre 20, 2025.
Use the filters below to find and compare flights from Seattle to Hanoi that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

sáb. 2/28

12:10 am-12:10 pm

1 stop21h 00m

Hanoi Noibai

jue. 3/19

11:50 pm-2:55 pm

1 stop29h 05m

$599

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

dom. 3/1

12:10 am-12:10 pm

1 stop21h 00m

Hanoi Noibai

lun. 3/16

1:30 pm-2:55 pm

1 stop15h 25m

$630

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

sáb. 1/17

12:10 am-10:25 pm

1 stop31h 15m

Hanoi Noibai

dom. 1/25

11:50 pm-1:55 pm

1 stop29h 05m

$641

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

lun. 1/19

11:00 am-11:10 am

1 stop33h 10m

Hanoi Noibai

sáb. 1/31

12:20 pm-9:00 am

1 stop35h 40m

$642

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

sáb. 2/21

12:10 am-12:10 pm

1 stop21h 00m

Hanoi Noibai

dom. 3/1

1:30 pm-1:55 pm

1 stop15h 25m

$648

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

mar. 4/7

11:05 pm-1:50 am

1 stop36h 45m

Hanoi Noibai

lun. 4/27

2:50 am-8:10 pm

1 stop31h 20m

$649

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

mié. 2/18

12:10 am-12:10 pm

1 stop21h 00m

Hanoi Noibai

lun. 3/9

1:30 pm-2:55 pm

1 stop15h 25m

$659

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

dom. 1/18

12:10 am-10:25 pm

1 stop31h 15m

Hanoi Noibai

sáb. 1/31

1:30 pm-1:55 pm

1 stop15h 25m

$662

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

dom. 3/22

9:45 am-5:25 pm

1 stop41h 40m

Hanoi Noibai

vie. 3/27

9:40 am-8:10 am

1 stop36h 30m

$666

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

lun. 2/23

12:10 am-10:25 pm

1 stop31h 15m

Hanoi Noibai

mar. 3/17

11:50 pm-2:55 pm

1 stop29h 05m

$667

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Hanoi from

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 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 $747, 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 February is your next best option. Flight prices from Seattle to Hanoi during February average around $764.

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 $944 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 $732 on momondo.

Can stopping save me money on Seattle to Hanoi flights?

You could potentially save up to 6% 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 November 2025, prices for Seattle to Hanoi flights are approximately 5% 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 18h 45m, 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?

  • 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?

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
Singapore AirlinesPriceFrom $628Free CancellationRating
8.1
1,407 reviews
Search Singapore Airlines flights
Asiana AirlinesPriceFrom $628Free CancellationRating
8.2
488 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $722Free CancellationRating
8.4
1,170 reviews
Search Korean Air flights
China AirlinesPriceFrom $722Free CancellationRating
8.3
782 reviews
Search China Airlines flights
DeltaPriceFrom $764Free CancellationRating
7.9
8,002 reviews
Search Delta flights
STARLUX AirlinesPriceFrom $775Free CancellationRating
8.9
232 reviews
Search STARLUX Airlines flights
EVA AirPriceFrom $783Free CancellationRating
8.4
1,280 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.

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