SEA - HAN

$279 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 2/21. 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

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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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

Tue, Jan 6 - Thu, Jan 22
Singapore Airlines Logo
8:45 am - 11:30 amSEA-HAN
35h 45m1 stop
Singapore Airlines Logo
6:25 pm - 7:10 amHAN-SEA
27h 45m1 stop
$630Singapore Airlines
Find Deal
Sun, Sep 21 - Sat, Oct 4
Philippine Airlines Logo
11:35 pm - 1:30 amSEA-HAN
35h 55m1 stop
Philippine Airlines Logo
2:30 am - 7:15 pmHAN-SEA
30h 45m1 stop
$636Philippine Airlines
Find Deal
Wed, Sep 24 - Tue, Oct 14
Philippine Airlines Logo
11:35 pm - 12:45 amSEA-HAN
35h 10m1 stop
Philippine Airlines Logo
2:30 am - 7:15 pmHAN-SEA
30h 45m1 stop
$643Philippine Airlines
Find Deal
Wed, Sep 24 - Wed, Oct 15
Asiana Airlines Logo
2:15 pm - 10:00 pmSEA-HAN
17h 45m1 stop
Asiana Airlines Logo
1:25 pm - 12:30 pmHAN-SEA
37h 05m1 stop
$661Asiana Airlines
Find Deal
Sun, Sep 21 - Sun, Oct 5
Asiana Airlines Logo
2:15 pm - 12:15 pmSEA-HAN
32h 00m1 stop
Asiana Airlines Logo
11:30 pm - 12:30 pmHAN-SEA
27h 00m1 stop
$665Asiana Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
Korean Air Logo
12:50 pm - 10:40 amSEA-HAN
31h 50m1 stop
Korean Air Logo
11:05 pm - 10:00 amHAN-SEA
24h 55m1 stop
$695Korean Air
Find Deal
Wed, Sep 24 - Wed, Oct 15
Korean Air Logo
7:15 am - 9:35 pmSEA-HAN
24h 20m2 stops
Korean Air Logo
12:00 pm - 10:40 amHAN-SEA
36h 40m1 stop
$738Korean Air
Find Deal
Mon, Oct 20 - Tue, Oct 28
China Airlines Logo
1:10 am - 10:35 amSEA-HAN
19h 25m1 stop
China Airlines Logo
11:35 am - 7:10 pmHAN-SEA
21h 35m1 stop
$750China Airlines
Find Deal
Tue, Sep 23 - Thu, Oct 16
China Airlines Logo
1:10 am - 4:50 pmSEA-HAN
25h 40m1 stop
China Airlines Logo
5:50 pm - 7:20 pmHAN-SEA
15h 30m1 stop
$774China Airlines
Find Deal
Tue, Oct 14 - Wed, Dec 10
EVA Air Logo
12:30 am - 4:50 pmSEA-HAN
26h 20m1 stop
EVA Air Logo
12:35 pm - 6:10 pmHAN-SEA
20h 35m1 stop
$778EVA Air
Find Deal

Everything you should know

Top airlines
Singapore Airlines
Cheapest • from $630 (round-trip)
STARLUX Airlines
Best reviews • 8.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Video guide: How to find cheap flights to Hanoi
Watch video
Watch video
Watch video
Watch video
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 20% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$630
Overall average: $901
Singapore Airlines
Tue 1/6Thu 1/22
SEA - HAN • 1 stop
Cheapest one-way
$279
Typical prices: $444-553
Singapore Airlines
Sat 2/21
SEA - HAN • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Hanoi!
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’s the cheapest day of the week to fly from Seattle to Hanoi?

The average price of all round-trip flights from Seattle to Hanoi clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Hanoi on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Seattle to Hanoi. For your return ticket, we recommend flying on a Sunday and avoiding Saturdays for the best deals.

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 April, where tickets cost $774 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,492 and $1,413 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 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$279
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 19% 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 $279 for a one-way ticket and $630 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?

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

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

    Seoul 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 $907 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 $953 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 211 reviews
8.8Food
8.9Comfort
9.0Boarding
8.9Entertainment
9.2Crew
Airline reviews

I need Starlux to respond to my complaint and issues for my flight.

6.0 GoodAnonymous, Aug 2025TPE - LAX
Read more STARLUX Airlines reviews

I need Starlux to respond to my complaint and issues for my flight.

Someon vomit during boarding. My seat was next to the vomit. I asked crew member to switch seat, but they said it was a full flight. I had my baby with me. My baby got sick after the flight. He was in the hospital for 2 days.

The airplane so clean and they have a nice crew

it they come out with resent movie and good food

The crew could have been kinder and less pushy. The premium economy seats don't have enough cushion. The seats are to hard and the flight became painful and uncomfortable after an hour of flying.

Aircraft is new and toilets are spacious, but toilets are quite filthy. They should clean more often. They have a long list of drink offer but are actually not available during meal. They said they’ll come back with them and you don’t get them until after dinner which means you eat your meals without any drinks if you were to get something that they don’t have on the cart. They are strict about removing headphones during take off and landing which is new to us since the movies did not get turned off. Instead, we we’re forced to watch their commercials during that time. We probably would fly with them again but not with the cost we spent. For the record, I work in tourism and travel a lot for inspections.

Our transit in Taipei was disappointing. The ground crew could not tell us where the lounge was located, so we wasted 15 minutes trying to find it. The airline has a great review, but our experience says otherwise.

Greetings when you arrive on the plane and good bye when you leave. Very attentive flight attendants.

Serve me a meal, I fell asleep during the flight. So they passed me twice.

Seats are not table comfortable. Crew members are pretty good. Can be much better!!

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

Flight Attendants could have been nicer and food portions could be bigger.

Great experience, comfort and food is delicious. Always great service and one time

The food from Los Angeles to Taipei made me throw up. The flight is also not comfort. But the staffs are very friendly and nice.

Aircraft was late getting to the gate - probably due to weather. We left the gate one hour late and had to wait another hour since we lost our slot in the takeoff queue. Our box was very wet and was falling apart when we got to Clark. It appears that luggage was exposed to weather in TPE while waiting to be loaded. Crew, however, handled the delay well and was able to provide planned service.

First time traveling with EVA.. great experience in economy class... Personnel very friendly..

seats are pitched well. you don't feel too tight.

I appreciate the email reminders for online check-in which made my entry to the lines less stressful. The flight was on schedule and on time. The baording staff were proactively helpful and approachable. The airplane inflight food, entertainment and comfies as well as provisions are excellent even in the economy seating. The airline transfer was smooth and easy! Luggage safe and intact! Thank you EVA airline for making my trip a reliable safe and comfortable experience.

Great but I am not sure why I was placed in zone 4 for boarding despite being an Infinity Member??? Can you explain online. Thanks

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

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

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.

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.

Been flying with China Airline over years many times. Good experience with them, no issues.

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

Staff was so nice and very helpful with directions aswell!

Most relaxing long distance flight I have been on. And I have flown on many.

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

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.

The plane hasnt left im stuck in seatle still my flight has been grounded for almost 5 hours

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.

Coming back to America was a peaceful flight everyone and everything was perfect

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 staff was courteous and the flight was very smooth. It was so nice to see the captain greeting the passengers at the end of the flights.

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

Information on your arrival and departure airports

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