Cheap Flights from Seattle to Hanoi

Compare Seattle to Hanoi flight deals

Find the cheapest month or even day of the year to fly to Hanoi

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Flight deals from Seattle to Hanoi Airport

Looking for a cheap last-minute deal or the best return flight from Seattle to Hanoi Airport? If you want to travel next month, return fares start from $1,082. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Hanoi

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Hanoi flights are currently cheapest in September.

Seattle to Hanoi: Alternative routes

Compare routes from Seattle to Hanoi below. You may find an airport to fly into that's cheaper, faster, or easier than Hanoi.

Seattle to Hanoi: Flight information

The things to know before you go.
Cheapest flight found$1,036
Cheapest month to flySeptember

Finding cheap flights from Seattle to Hanoi: Frequently asked questions

The best price we found for a return flight from Seattle to Hanoi is $1,036. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle to Hanoi. But we found flights with one stop from $1,036.
As of February 2026, there are no flights flying from Seattle to Hanoi.
The cheapest month to fly from Seattle to Hanoi is usually September.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Hanoi Airport on Tuesday, 8 September 2026.
No airlines currently offer direct flights between Seattle and Hanoi Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Hanoi but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Hanoi is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Hanoi is Korean Air .

Travelling from Seattle to Noi Bai International Airport (HAN): What you need to know

  • There are two main airports you can fly out of in Seattle. Check out your options leaving from Seattle-Tacoma International Airport (SEA) or Lake Union Sea Plane Base Airport (LKE) when booking your flight from Seattle to Noi Bai International Airport (HAN).

  • Noi Bai International Airport is located in Hanoi. The city runs on the UTC+7 timezone and is 14 hours ahead of Seattle.

  • Leave enough time to catch your flight from Seattle to HAN. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.

  • Peak travel periods mean busier airports, so aim to get there even earlier. Give yourself at least two hours before a domestic flight and four hours for international journeys to keep to your schedule.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • A stopover is the perfect opportunity to take a break from travelling and maybe even explore another city. When searching for cheap flights from Seattle to HAN leaving from Seattle-Tacoma International Airport (SEA), uncheck the 'Direct flights only' box to find out where you can visit along the way. Your journey might pause in:

    • Incheon International Airport (ICN)

    • Taiwan Taoyuan International Airport (TPE)

    • Narita International Airport (NRT)

  • Travelling from central Seattle to SEA takes about 55 minutes on public transport. If you ride-share, drive or take a cab, you'll cover the 23 kilometres in 20 minutes or so, depending on traffic.

  • Catching an early flight from Seattle to Noi Bai International Airport? Avoid the hassle of rushing to the terminal (and sneak in some extra snooze time) by picking one of these hotels near Seattle-Tacoma International Airport:

  • 81.27% of flights leaving Seattle-Tacoma International Airport touch down at their destination on schedule. With its dependable on-time performance, delays are unlikely when taking off from SEA.

Lake Union Sea Plane Base Airport (LKE)

  • Using public transport, you can travel from central Seattle to LKE in about 25 minutes. The airport is roughly 3 kilometres away, and making the journey by car takes approximately 10 minutes.

  • Get a head start on your holiday with an extra night away from home. Before catching your Seattle to HAN flight, kick back in one of these hotels close to Lake Union Sea Plane Base Airport:

About Noi Bai International Airport (HAN)

Getting from Noi Bai International Airport (HAN) to central Hanoi

  • Central Hanoi is roughly 21 kilometres from Noi Bai International Airport. Travel times by cab or car hire will vary depending on time of day and traffic conditions, so do some research before you go.

  • It'll take around 1 hour 55 minutes if you're travelling by public transport.

How to find the cheapest flights from Seattle to Noi Bai International Airport (HAN)

  • $543 is currently the best price for a one-way ticket from Seattle to Noi Bai International Airport. Return flights start from $1,036. These fares can change based on demand.

  • To find cheap flights from Seattle to HAN, book ahead. Airlines tend to offer lower fares when tickets first go on sale.

  • The 'Whole month' tool shows you the cheapest Seattle to Noi Bai International Airport tickets across the entire month. It's an easy way to snap up a bargain if your travel plans are flexible.

  • Save time looking for cheap flight tickets from Seattle to HAN by setting up a Price Alert. We'll send you an email or push notification on the app when a lower fare becomes available.

  • Tailor your travel plans using filters. Choose your departure and arrival times, total journey duration and airlines. You can also sort the results by 'Cheapest,' 'Best' or 'Fastest' flights from Seattle to Noi Bai International Airport.

The best time to fly from Seattle to Noi Bai International Airport (HAN)

  • April is the quietest month for flights from Seattle to Noi Bai International Airport (HAN), while July is the most popular. Pick the best time to visit Hanoi based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • Lock in a Seattle to HAN flight ticket departing in June if you want to visit the city during its warmest month. Expect temperatures in Hanoi to range from 25ºC to 36ºC.

  • If you like cooler conditions, search for a cheap ticket from Seattle to Noi Bai International Airport in January when temperatures are between 10ºC and 22ºC.

More about Hanoi

  • When it comes to looking for somewhere to rest your head, you'll find the best places to stay in Hanoi right here. Browse these hotels after you've booked your flight from Seattle to Noi Bai International Airport:

  • There are plenty of fantastic things to do in Hanoi when you're ready to get out and sightsee. Start exploring at Ho Chi Minh Mausoleum followed by Hanoi Street Foods and Thang Long Water Puppet Theatre.

Explore more of Vietnam

  • You've visited Hanoi, now it's time to explore other corners of Vietnam. Journey around 225 kilometres east to Móng Cái to tick off its top attractions. From Baĩ biển Trà Cổ to Tra Co beach and Biển Trà cổ, Móng Cái, Quảng Ninh, there's plenty to keep you on the go.

  • Around 129 kilometres south of Hanoi, Bỉm Sơn is another essential stop in Vietnam. Experience major highlights starting with Quang Khanh Pagoda, Thung lũng xanh and Di Tích Lịch Sử Động Cửa Buồng.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.