SEA - HAN

$303 Find Cheap Flights from Seattle to Hanoi

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Hanoi departing on 4/18. 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 Hanoi

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Hanoi.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Hanoi.
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Everything you should know

Cheapest round-trip
$507
Overall average: $947
Singapore Airlines
Thu 5/14Mon 5/18
SEA - HAN • 1 stop
Cheapest one-way
$303
Typical prices: $374-$454
Singapore Airlines
Sat 4/18
SEA - HAN • 1 stop
Video guide: How to find cheap flights to Hanoi
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Top airlines
Singapore Airlines
Cheapest • from $507 (round-trip)
STARLUX Airlines
Best reviews • 8.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 21% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Hanoi (SEA-HAN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Hanoi 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 Seattle to Hanoi

Thu, May 14 - Mon, May 18
Singapore Airlines Logo
10:15 am - 11:30 am
SEA
-
HAN
35h 15m
1 stop
Singapore Airlines Logo
6:30 pm - 8:45 am
HAN
-
SEA
28h 15m
1 stop
$507Singapore Airlines
Thu, May 21 - Mon, May 25
Singapore Airlines Logo
10:15 am - 11:30 am
SEA
-
HAN
35h 15m
1 stop
Singapore Airlines Logo
6:30 pm - 8:45 am
HAN
-
SEA
28h 15m
1 stop
$557Singapore Airlines
Thu, Apr 9 - Tue, Apr 21
Asiana Airlines Logo
12:55 am - 10:00 pm
SEA
-
HAN
31h 05m
1 stop
Asiana Airlines Logo
1:25 pm - 2:55 pm
HAN
-
SEA
15h 30m
1 stop
$622Asiana Airlines
Thu, Apr 9 - Tue, Apr 21
Asiana Airlines Logo
12:55 am - 12:15 pm
SEA
-
HAN
21h 20m
1 stop
Asiana Airlines Logo
1:25 pm - 2:55 pm
HAN
-
SEA
15h 30m
1 stop
$623Asiana Airlines
Mon, Apr 13 - Mon, Apr 20
Delta Logo
1:00 pm - 10:40 am
SEA
-
HAN
31h 40m
1 stop
Delta Logo
11:10 pm - 1:07 pm
HAN
-
SEA
27h 57m
1 stop
$626Delta
Fri, Mar 6 - Sat, Mar 21
Asiana Airlines Logo
12:10 am - 12:10 pm
SEA
-
HAN
21h 00m
1 stop
Asiana Airlines Logo
1:30 pm - 2:55 pm
HAN
-
SEA
15h 25m
1 stop
$627Asiana Airlines
Sun, Mar 8 - Sat, Mar 14
Asiana Airlines Logo
12:10 am - 10:25 pm
SEA
-
HAN
32h 15m
1 stop
Asiana Airlines Logo
1:30 pm - 2:55 pm
HAN
-
SEA
15h 25m
1 stop
$629Asiana Airlines
Mon, May 4 - Tue, May 12
Korean Air Logo
7:00 am - 9:35 pm
SEA
-
HAN
24h 35m
2 stops
Korean Air Logo
11:10 pm - 10:40 am
HAN
-
SEA
25h 30m
1 stop
$635Korean Air
Mon, Apr 13 - Mon, Apr 20
Korean Air Logo
12:50 pm - 10:40 am
SEA
-
HAN
31h 50m
1 stop
Korean Air Logo
11:10 pm - 5:16 pm
HAN
-
SEA
32h 06m
2 stops
$641Korean Air
Wed, Mar 11 - Mon, Mar 16
Korean Air Logo
7:25 am - 9:45 pm
SEA
-
HAN
24h 20m
2 stops
Korean Air Logo
11:05 pm - 5:09 pm
HAN
-
SEA
32h 04m
2 stops
$646Korean Air
Booking Insights

KAYAK's insights & trends for Seattle to Hanoi flights

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

Find cheap flights to Hanoi
Find cheap flights to Hanoi

Planning a trip from Seattle to Hanoi? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Hanoi, 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 Seattle to Hanoi is September, where tickets cost $741 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,408 and $1,380 respectively.

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

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

To get a below average price on the flight from Seattle to Hanoi, you should book around 5 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$303
Most popular time to fly and prices are also 17% lower on average.
Flight from Seattle to Hanoi

When to book flights from Seattle to Hanoi

Are your dates flexible? Find out the best times to travel from Seattle to Hanoi 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 Seattle to Hanoi

  • Can I change my ticket from economy to first class on Delta Airlines?

    Delta Airlines offers a wide range of classes of tickets that vary based on travel dates and flight choices available for travelers looking to travel from Seattle to Hanoi. Also, Delta Airlines offers options for customers to upgrade their tickets from economy to first class. You can upgrade if you have adequate SkyMiles required in your SkyMiles account.

  • What is the quickest way from downtown to Seattle-Tacoma International Airport (SEA)?

    The quickest and most convenient means of getting to Seattle-Tacoma International Airport (SEA) if you need to catch a flight to Hanoi is a taxi. Located approximately 14 miles from downtown, it will take you roughly 22 minutes to get to the airport.

  • Do Alaska Airlines have a baggage policy?

    Yes, if you board Alaska Airlines to Hanoi, you are permitted to have a single carry-on bag and personal items, including; a briefcase or a purse. The policy stipulates that the bag must have a maximum dimension of 22 x 14 x 9 inches in length, height and width.

  • Are there freight operation services from Seattle to Hanoi?

    Business Travelers looking to export merchandise from Seattle to Hanoi can use the commercial Seattle-Tacoma International Airport (SEA) or King County International Airport (BFI). These airports offer freight operation services to their travelers at competitive ticket prices and cargo fees.

  • What is the cheapest flight from Seattle to Hanoi?

    In the last 3 days, the lowest price for a flight from Seattle to Hanoi was $303 for a one-way ticket and $507 for a round-trip.

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

    A passport is required to fly from Seattle to Hanoi.

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

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

  • Which airline alliances offer flights from Seattle to Hanoi?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Hanoi, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Hanoi from Seattle?

    Taipei City is the most popular layover city among KAYAK users traveling from Seattle to Hanoi.

  • Which is the best airline for flights from Seattle to Hanoi, STARLUX Airlines or EVA Air?

    The two airlines most popular with KAYAK users for flights from Seattle to Hanoi are STARLUX Airlines and EVA Air. With an average price for the route of $875 and an overall rating of 8.9, STARLUX Airlines is the most popular choice. EVA Air is also a great choice for the route, with an average price of $898 and an overall rating of 8.4.

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

    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 Seattle to Hanoi.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Hanoi from Seattle 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 Seattle to Hanoi?

    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 Hanoi with an airline and back to Seattle with another airline. Booking your flights between Seattle and HAN 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 Seattle to Hanoi?

    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 Hanoi from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Hanoi

  • If you are looking to fly to Hanoi from Seattle-Tacoma International Airport (SEA), you can book a one-stop flight offered by different airlines at the airport. Travelers looking to stop in Tokyo can book Delta, Vietnam, ANA or Jal Airlines. If you are seeking to travel via Seoul, you can board Asiana or Korean Air.
  • Several Airlines offer unaccompanied minor services for minors traveling to Hanoi from Seattle, including Delta and Alaska Airlines. Alaska Airlines has a dedicated program for unaccompanied minors known as Junior Jetsetters, ensuring they are well taken care of during their flight. The airline has an age restriction of 5 to 17 years for a child to be considered a minor.
  • Served by two main airports that offer both domestic and international flights, you can book a flight at Seattle-Tacoma International Airport (SEA) or King County International Airport (BFI). Seattle-Tacoma International Airport (SEA) is a hub for Delta Airlines and Alaska Airlines, offering a strong route network for broad connectivity. Also, Delta Airlines is part of the SkyTeam alliance, a strategic Airline alliance that allows for code-sharing, coordinated schedules and seamless connections with other airlines.
  • You can book a charter flight if you are looking to avoid long queues, security checks and customs experience on commercial flights. King County International Airport (BFI) offers private and charter flights to travelers with specific needs and preferences. Charter flights offer customized and personalized services such as specific on board services, seating arrangements and extra leg space. Charter carriers provide travelers privacy, convenience and flexibility for a comfortable and exclusive traveling experience.
  • Travelers looking to fly to Hanoi in Vietnam from Seattle can choose their destination airport as Noi Bai International Airport (HAN), located 22 miles on the northern side of downtown Hanoi. The airport is the major gateway for domestic and international travelers seeking to access the downtown quickly and conveniently. You can book a taxi outside the main terminal, and it takes roughly 45 minutes under ideal traffic conditions.

Reviews of the top 5 airlines serving from Seattle to Hanoi

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Hanoi. 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 Seattle to Hanoi? 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.
8.9
STARLUX AirlinesOverall score based on 268 reviews
9.1Crew
8.8Entertainment
8.6Food
8.8Comfort
8.9Boarding
Airline reviews

Majority of the movie entertainment loaded in the aircraft were quite old.

10.0 ExcellentAnonymous, Jan 2026
TPE - ONT
Read more STARLUX Airlines reviews

Majority of the movie entertainment loaded in the aircraft were quite old.

Crew is very attentive. Another new airbus 350-900 plane. Very modern.

Passengers were confused and freaking out coz the flight information wasn’t showing on the board that was running with all the departing flights. B9 gate was still showing Cathay Pacific bound for HK 15:50 was on until 22:07. STARLUX staff cameater but didn’t let the passengers go in to pre departure area until 22:45 for the 23:30 boarding time

The aircraft is fairly new. The screen is big and it's great to enjoy movies on a long haul flight. However, the food quality , and drink and snack selections, have room for improvement.

Preboarding food selection is an excellent idea. On the other end I did know the choice. People in my area know the choice. It ends with I got my meal till most of them are half way to finish their meal.

Overall it’s good . However the food quality can be improved .

My luggage was forced open and broke the zipper. I received it in a huge STARLUX plastic bag. Unfortunately, I have a round trip ticket but might be my first and last with this airline

I went to the gate that showed on the flight board but they changed gates at the last minute and I missed my flight. I had to buy new ticket from EVA air to Manila and take 3 hour bus ride back to my home. Will never fly Starlux again!

Starlux was great service and awesome food and drinks👍🏼 will take starlux again for my next vacation👍🏼

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

From checking at the airport to end of flights, attentive and caring personnel, comfortable seating, great food. I plan on using EVA again. Thank you, all.

Very nice, I feel I got good value for the price.

Amazing one of the best airlines i have ever traveled with. I live with medical issues called psoriatic arthritis and was in pain on the flight. The flight crew made sure I had fresh ice pack ever hour. Going above an beyond with service and care ⭐️⭐️⭐️⭐️⭐️.

Certain flight crew member were rude and short with me when I asked questions.

We were very impressed with the modern plane its amenities, as well as the services of flight attendants.

everything was so good! Especially Food. It was the best I've ever had! However,I requested to add mileage point to Star alliance group ANA; it hasn't been added yet.... 😞

The crew very accommodating and food too is good. Keep up the good work

The crews are very efficient. Other airlines should learn from them when it comes to boarding and departing from the airplane. They also display efficiency in serving meals. They don't keep the aisles blocked for hours like some other airlines. The food is poor. Generally the food was unrecognizable and poorly prepared. The only thing that made it better than US flag carriers is that there was a fresh fruit bowl with each meal.

Staff show very stress with delayed flight more than passenger.

Very good service and food. Crew was professional and considerate. Cabin and restrooms were kept clean

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

This flight was a superior flight in all regards. Extremely pleasant experience.

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Not many people, so you can lay down on two seats

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.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

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

I love my Delta crew, they were so welcoming and helpful.

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

Overall was a lovely experience. The crew were kind and courteous throughout the entire flight.

Better organization of boarding procedures. Terrible leadership guiding people to gates.

I did not like how the plane landed. It was not smooth.

Better screens, it would have been nice to have more comfortable seats.

It was great, but my bag was not loaded onto the connecting flight. I'm currently getting it resolved. If this isn't a problem, everything else was excellent.

Very clean ,flight attendants very professional,nice , Boarding was very easy

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

My luggage didn’t arrive with my flight. Flight was delayed by nearly 2 hours while we sat on the plane and I almost missed my connecting flight and subsequently missed the last train from the airport so it took me another 2 hours to get to my destination after arriving, Crew skipped me several times when offering beverages, and I couldn’t get their attention at times because they wouldn’t even make eye contact with me. They didn’t give me a form for disembarking so I had to go to the back of the line after waiting an eternity for immigration. Paid for on flight wi- fi that didn’t work for most of the flight.

Love flying Asiana. Been using it for over a decade now.

I had a bad experience coming from America to Thailand. On my connecting flight my check in suitcase was not put on the departing aircraft, I received my suitcase 24 hours after arriving in Bangkok and when I open my luggage my hand swelled up. The next morning when I put on an outfit from my suitcase my face swelled up and became numb. My entire vacation was ruined it seems that some kind of chemical was sprayed into suitcase and ruined my clothes and got me sick. The staff at my hotel called the airline and spoke to someone and they told me to file a complaint and gave my a website to do so. I did not file a complaint I felt like it would have fell on death ears. I had to throw away my brand new vacation clothes and suitcase and I had the worst vacation ever due to this happening to me.

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

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

Information on your arrival and departure airports