Cheap flights from Seattle to Hanoi from $284
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 2/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Find the cheapest flights from Seattle to Hanoi
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
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.Korean Air flights from Seattle to Hanoi
Our best Korean Air deals on Seattle to Hanoi flight tickets
Delta flights from Seattle to Hanoi
Our best Delta deals on Seattle to Hanoi flight tickets
momondo Fare Finder
Use the filters below to find and compare flights from Seattle to Hanoi that are best for you.
Fly from
Fly to
Route
Depart
Return
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Tue 2/23
8:40 am-3:10 pm
1 stop39h 30m
Hanoi Noibai
Tue 3/16
12:45 pm-8:05 am
1 stop33h 20m
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Tue 2/23
8:40 am-3:10 pm
1 stop39h 30m
Hanoi Noibai
Tue 3/16
6:20 pm-8:05 am
1 stop27h 45m
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Wed 11/11
5:52 pm-11:10 am
2 stops26h 18m
Hanoi Noibai
Wed 11/25
11:05 pm-9:05 am
1 stop25h 00m
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Wed 11/11
5:52 pm-11:10 am
2 stops26h 18m
Hanoi Noibai
Wed 11/25
12:20 pm-9:05 am
1 stop35h 45m
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Mon 11/16
12:30 pm-11:10 am
1 stop31h 40m
Hanoi Noibai
Tue 12/1
11:05 pm-11:56 am
1 stop27h 51m
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Sun 11/15
12:30 pm-11:10 am
1 stop31h 40m
Hanoi Noibai
Tue 12/1
11:05 pm-11:56 am
1 stop27h 51m
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Thu 10/22
1:15 am-10:30 am
1 stop19h 15m
Hanoi Noibai
Sat 10/31
11:35 am-7:10 pm
1 stop21h 35m
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Sun 11/1
12:10 am-10:35 am
1 stop19h 25m
Hanoi Noibai
Mon 11/9
5:30 pm-6:10 pm
1 stop15h 40m
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Mon 2/22
10:25 am-10:05 am
1 stop32h 40m
Hanoi Noibai
Tue 3/16
7:25 pm-9:45 am
1 stop28h 20m
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Mon 1/25
10:25 am-10:05 am
1 stop32h 40m
Hanoi Noibai
Mon 2/8
7:25 pm-8:45 am
1 stop28h 20m
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 typical price of a round-trip flight between Seattle and Hanoi?
Prices are currently low for flights on this route.
Typical prices usually range from $831 to $952.The lowest price recently found on this route was $641.
What is the cheapest month to fly to Hanoi?
The cheapest month to fly to Hanoi from Seattle is in September. Flight prices, which tend to average around $684, are often lower during this time because this is during the off-season. If you’re not able to fly to Hanoi in September, then April is your next best option. Flight prices from Seattle to Hanoi during April average around $768.
How far in advance should I book a flight from Seattle to Hanoi?
You are more likely to see cheaper flights to Hanoi from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Hanoi for around $890 when searching 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 $675 on momondo.
Can stopping save me money on Seattle to Hanoi flights?
You could potentially save up to 37% 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 October 2026, prices for Seattle to Hanoi flights are approximately 25% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Hanoi Noibai?
Singapore Airlines and Korean Air are the most popular carriers operating from Seattle/Tacoma Intl to Hanoi Noibai
What airlines fly to Hanoi?
Asiana Airlines, EVA Air and China Airlines are the top three most popular airlines that fly to Hanoi from Seattle according to our data. Asiana Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Hanoi. Keep in mind that there are 7 different airlines that fly to Hanoi on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Seattle and Hanoi?
Incheon (ICN) was the most common stop: 53% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Seattle to Hanoi?
Flights via Manila (MNL) offer the lowest average round-trip price of $655.
Which layover airport has the shortest travel time from Seattle to Hanoi?
Flights connecting via Taipei City (TPE) have the shortest average one-way travel time: 20h 24m.
Which layover airport has the shortest connection time from Seattle to Hanoi?
Taipei City (TPE) has the shortest average layover time for this route: 3h 47m.
When to book flights from Seattle to Hanoi
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
Frequently asked questions about flying from Seattle to Hanoi
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 19h 45m, 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?
There are 7 operators available for flights from Seattle/Tacoma Intl Airport to Hanoi Noibai Airport as of October 2026.
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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Hanoi is Asiana Airlines (41% of total bookings). The next most popular airlines are EVA Air (19%), China Airlines (15%), and Korean Air (12%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $400 | Free Cancellation | Rating 7.8 8,651 reviews | |||
| PriceFrom $521 | Free Cancellation | Rating 8.2 1,624 reviews | |||
| PriceFrom $614 | Free Cancellation | Rating 8.2 850 reviews | |||
| PriceFrom $628 | Free Cancellation | Rating 8.1 563 reviews | |||
| PriceFrom $668 | Free Cancellation | Rating 8.4 1,217 reviews | |||
| PriceFrom $758 | Free Cancellation | Rating 8.5 1,546 reviews | |||
| PriceFrom $797 | Free Cancellation | Rating 8.7 395 reviews |
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.