Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Hanoi from $343

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 9/5. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Seattle to Hanoi

Cheap round-trip flights

Singapore Airlines Logo
10:15 am - 11:30 amSEA-HAN
35h 15m1 stop
Singapore Airlines Logo
6:30 pm - 8:45 amHAN-SEA
28h 15m1 stop
$659Singapore Airlines
Find Deal
Fri, Sep 26 - Sat, Oct 11
Singapore Airlines Logo
10:15 am - 5:35 pmSEA-HAN
41h 20m1 stop
Singapore Airlines Logo
12:35 pm - 7:10 amHAN-SEA
33h 35m1 stop
$664Singapore Airlines
Find Deal
Sun, Oct 19 - Sat, Nov 8
Asiana Airlines Logo
12:10 am - 1:10 pmSEA-HAN
23h 00m1 stop
Asiana Airlines Logo
11:30 pm - 1:55 pmHAN-SEA
29h 25m1 stop
$737Asiana Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 15
Asiana Airlines Logo
2:15 pm - 12:15 pmSEA-HAN
32h 00m1 stop
Asiana Airlines Logo
1:25 pm - 12:30 pmHAN-SEA
37h 05m1 stop
$745Asiana Airlines
Find Deal
Wed, Sep 3 - Fri, Sep 19
China Airlines Logo
1:10 am - 10:35 amSEA-HAN
19h 25m1 stop
China Airlines Logo
11:35 am - 7:20 pmHAN-SEA
21h 45m1 stop
$805China Airlines
Find Deal
Sat, Oct 4 - Sat, Oct 18
China Airlines Logo
1:10 am - 10:35 amSEA-HAN
19h 25m1 stop
China Airlines Logo
5:50 pm - 7:20 pmHAN-SEA
15h 30m1 stop
$806China Airlines
Find Deal
Thu, Sep 25 - Sat, Oct 11
Korean Air Logo
11:00 am - 11:10 amSEA-HAN
33h 10m1 stop
Korean Air Logo
11:00 pm - 9:00 amHAN-SEA
25h 00m1 stop
$812Korean Air
Find Deal
Tue, Nov 4 - Tue, Nov 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
$842Korean Air
Find Deal
Tue, Nov 4 - Sun, Nov 16
EVA Air Logo
11:30 pm - 11:35 amSEA-HAN
21h 05m1 stop
EVA Air Logo
6:20 pm - 5:40 pmHAN-SEA
14h 20m1 stop
$881EVA Air
Find Deal
Tue, Nov 4 - Thu, Nov 13
EVA Air Logo
1:10 am - 4:50 pmSEA-HAN
25h 40m1 stop
EVA Air Logo
6:00 pm - 7:10 pmHAN-SEA
15h 10m1 stop
$909EVA Air
Find Deal
Mon, Aug 4 - Tue, Aug 19

Philippine Airlines flights from Seattle to Hanoi

Our best Philippine Airlines deals on Seattle to Hanoi flight tickets
Philippine Airlines
Oct 1
SEA11:35 pmSeattle/Tacoma Intl
35h 10m
1 stop
HAN12:45 amHanoi Noibai
Oct 28
HAN2:50 amHanoi Noibai
30h 45m
1 stop
SEA7:35 pmSeattle/Tacoma Intl
Philippine Airlines
Oct 1
SEA11:35 pmSeattle/Tacoma Intl
35h 10m
1 stop
HAN12:45 amHanoi Noibai
Oct 7
HAN2:30 amHanoi Noibai
30h 45m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
Philippine Airlines
Aug 10
SEA11:35 pmSeattle/Tacoma Intl
20h 50m
1 stop
HAN10:25 amHanoi Noibai
Aug 30
HAN2:30 amHanoi Noibai
30h 45m
1 stop
SEA7:15 pmSeattle/Tacoma Intl

STARLUX Airlines flights from Seattle to Hanoi

Our best STARLUX Airlines deals on Seattle to Hanoi flight tickets
STARLUX Airlines
Sep 30
SEA1:15 amSeattle/Tacoma Intl
25h 35m
1 stop
HAN4:50 pmHanoi Noibai
Oct 8
HAN5:50 pmHanoi Noibai
36h 20m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
STARLUX Airlines
Sep 2
SEA1:15 amSeattle/Tacoma Intl
25h 35m
1 stop
HAN4:50 pmHanoi Noibai
Sep 19
HAN11:10 amHanoi Noibai
19h 00m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
STARLUX Airlines
Sep 25
SEA1:15 amSeattle/Tacoma Intl
25h 35m
1 stop
HAN4:50 pmHanoi Noibai
Oct 12
HAN11:25 amHanoi Noibai
18h 45m
1 stop
SEA4:10 pmSeattle/Tacoma Intl

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 April. Flight prices, which tend to average around $771, are often lower during this time because this is during the off-season. If you’re not able to fly to Hanoi in April, then February is your next best option. Flight prices from Seattle to Hanoi during February 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 13 weeks ahead of your departure date. In general, you can expect to find flights to Hanoi for around $970 when searching 13 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 $744 on momondo.

Can stopping save me money on Seattle to Hanoi flights?

You could potentially save up to 11% 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 June 2025, prices for Seattle to Hanoi flights are approximately 35% more expensive 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

Best Price Found

$343

Fastest flight time

17h 30m

Direct flights

None

Airports in Hanoi

1 airport
The best one-way flight to Hanoi from Seattle in the past 72 hours is $343. The best round-trip flight deal from Seattle to Hanoi found on momondo in the last 72 hours is $659.
The fastest flight from Seattle to Hanoi takes 17h 30m
There are no direct flights from Seattle to Hanoi. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Hanoi Noibai Airport.
There is 1 airport near Hanoi: Hanoi Noibai (HAN)

  • 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 17h 30m, 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
Asiana AirlinesPriceFrom $639Free CancellationRating
8.2
443 reviews
Search Asiana Airlines flights
Singapore AirlinesPriceFrom $682Free CancellationRating
8.1
1,302 reviews
Search Singapore Airlines flights
Japan AirlinesPriceFrom $717Free CancellationRating
8.3
1,489 reviews
Search Japan Airlines flights
Korean AirPriceFrom $760Free CancellationRating
8.4
1,088 reviews
Search Korean Air flights
China AirlinesPriceFrom $761Free CancellationRating
8.3
738 reviews
Search China Airlines flights
DeltaPriceFrom $764Free CancellationRating
8.0
7,945 reviews
Search Delta flights
STARLUX AirlinesPriceFrom $802Free CancellationRating
9.1
177 reviews
Search STARLUX Airlines flights
EVA AirPriceFrom $808Free CancellationRating
8.4
1,202 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 6/16
Mon 6/23

Find better results for your trip to Vietnam