HAN - SEA

$403 Find Cheap Flights from Hanoi to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Hanoi to Seattle departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Hanoi to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Hanoi to Seattle, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$789
Typical prices: $1,034-$997
Asiana Airlines
Sun 9/6Sun 9/27
HAN - SEA • 1 stop
Cheapest one-way
$403
Typical prices: $521-$569
Singapore Airlines
Sat 10/17
HAN - SEA • 1 stop
Top airlines
Cheapest • from $789 (round-trip)
Best reviews • 8.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Hanoi and Seattle. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $1,061 (round-trip)
Shortest trip • 16h 12m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Hanoi to Seattle (HAN-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Hanoi to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Hanoi to Seattle

Sun, Sep 6 - Sun, Sep 27
Asiana Airlines Logo
11:30 pm - 3:15 pm
HAN
-
SEA
29h 45m
1 stop
Asiana Airlines Logo
12:10 am - 10:00 pm
SEA
-
HAN
31h 50m
1 stop
$789Asiana Airlines
Mon, Nov 2 - Fri, Nov 6
Korean Air Logo
11:05 pm - 9:00 am
HAN
-
SEA
24h 55m
1 stop
Korean Air Logo
11:00 am - 11:10 am
SEA
-
HAN
33h 10m
1 stop
$810Korean Air
Sat, Sep 5 - Fri, Sep 25
Asiana Airlines Logo
11:30 pm - 3:15 pm
HAN
-
SEA
29h 45m
1 stop
Asiana Airlines Logo
12:10 am - 12:15 pm
SEA
-
HAN
22h 05m
1 stop
$815Asiana Airlines
Sat, Sep 5 - Sat, Sep 26
Delta Logo
11:10 pm - 1:37 pm
HAN
-
SEA
28h 27m
1 stop
Delta Logo
7:20 am - 9:35 pm
SEA
-
HAN
24h 15m
2 stops
$907Delta
Sat, Sep 5 - Sat, Sep 26
Delta Logo
12:05 pm - 9:45 pm
HAN
-
SEA
23h 40m
2 stops
Delta Logo
9:25 pm - 9:35 pm
SEA
-
HAN
34h 10m
2 stops
$912Delta
Sat, Jun 27 - Sat, Jul 18
Korean Air Logo
11:10 pm - 11:00 am
HAN
-
SEA
25h 50m
1 stop
Korean Air Logo
1:20 pm - 10:35 am
SEA
-
HAN
31h 15m
1 stop
$955Korean Air
Fri, Jun 26 - Fri, Jul 17
Delta Logo
11:10 pm - 1:25 pm
HAN
-
SEA
28h 15m
1 stop
Delta Logo
1:05 pm - 9:35 pm
SEA
-
HAN
18h 30m
1 stop
$966Delta
Fri, Jun 26 - Mon, Jul 20
Delta Logo
11:10 pm - 1:25 pm
HAN
-
SEA
28h 15m
1 stop
Delta Logo
1:05 pm - 9:35 pm
SEA
-
HAN
18h 30m
1 stop
$968Delta
Sun, Jun 28 - Tue, Jul 21
Korean Air Logo
11:10 pm - 11:00 am
HAN
-
SEA
25h 50m
1 stop
Korean Air Logo
1:20 pm - 10:35 am
SEA
-
HAN
31h 15m
1 stop
$972Korean Air
Fri, Oct 2 - Tue, Oct 6
Qatar Airways Logo
7:30 pm - 12:25 pm
HAN
-
SEA
30h 55m
1 stop
Qatar Airways Logo
4:25 pm - 7:15 am
SEA
-
HAN
24h 50m
1 stop
$984Qatar Airways
Booking Insights

KAYAK's insights & trends for Hanoi to Seattle flights

Get data-powered insights and trends into flights from Hanoi to Seattle to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Hanoi to Seattle?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Hanoi to Seattle departing in September.

What is the cheapest month to fly from Hanoi to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Hanoi to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Hanoi to Seattle is March, where tickets cost $0 (return) on average. On the other hand, the most expensive months are January and September, where the average cost of round-trip tickets is $1,379 and $1,025 respectively.

Good to know

Low seasonApril
Cheapest flight$403
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Hanoi to Seattle

When to book flights from Hanoi to Seattle

Are your dates flexible? Find out the best times to travel from Hanoi to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Hanoi to Seattle

  • What is the cheapest flight from Hanoi to Seattle?

    In the last 5 days, the lowest price for a flight from Hanoi to Seattle was $403 for a one-way ticket and $789 for a round-trip.

  • Do I need a passport to fly between Hanoi and Seattle?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Hanoi and on arrival in Seattle.

  • Which airports will I be using when flying from Hanoi to Seattle?

    When flying out of Hanoi you will be using Hanoi Noibai. You will be landing at Seattle, also known as Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from Hanoi to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Hanoi to Seattle?

    SkyTeam is the only airline alliance operating flights between Hanoi and Seattle.

  • How does KAYAK find such low prices on flights from Hanoi to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Hanoi to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Hanoi to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Hanoi is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Hanoi to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Hanoi with another airline. Booking your flights between Hanoi and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Hanoi to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Hanoi up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Hanoi to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Hanoi to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Hanoi to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.3
China AirlinesOverall score based on 829 reviews
8.3Boarding
8.5Crew
8.0Entertainment
8.0Comfort
7.8Food
Airline reviews

The crew were professional and attentive. Blankets and pillows were on each seat which was appreciated. The food was served warm and had a balance of various nutritional options. As far as the monitor there were not enough English speaking choices and foreign shows did not offer English captions.

8.0 ExcellentAnnie, Jun 2026
MNL - TPE
Read more China Airlines reviews

The crew were professional and attentive. Blankets and pillows were on each seat which was appreciated. The food was served warm and had a balance of various nutritional options. As far as the monitor there were not enough English speaking choices and foreign shows did not offer English captions.

We really enjoyed our flight to Seattle. The food was great and service was attentive.

Everything was fine except the seats were quite compressed and hard for the 12 hour flight

The crew are amazing. Very professional, polite, kind, and accommodating.

Well, we upgraded and on a 14 hour flight not sure how we would tolerate it otherwise. The upgrades are ridiculously expensive and even with empty seats even in first class it was difficult to upgrade. Probably won’t fly China Air again due to this. The attendants tho were much better than the airlines in the states and there attentiveness and care for your comfort far exceeds other airlines in the states.

Flight attendants. Food, entertainment and most of all, be on time.

Very bad. They don’t allow group people to sit together by blocking most of seats and opening only single seat during online checking in. . By doing so, they can rip off customers at the check-in counter by collecting extra money if we want to sit together in the same row.

Hour late but understandable under the conditions. Taoyuan airport could have clearer signs language wise and more staff to help direct people.

Delayed. Not a full flight and whole rows left open with the paid seating. Food was ok. My beef meal only had one cube of beef the rest carrot cubes. Entertainment on personal device but didn’t know about it until the flight was almost done.

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

Everything you need to know for your flight from Hanoi to Seattle

Information on your arrival and departure airports