Find flights
When to book
FAQs

Cheap flights from Seattle to Hanoi from C$ 572

SEA — HAN
10 Oct — 17 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Hanoi

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Hanoi

Mon 9/1112:30 p.m. -
1 stop31h 40m
Tue 17/1111:05 p.m. -
1 stop27h 46m
Deal found 8/9C$ 1,153
Tue 10/1111:00 a.m. -
1 stop33h 10m
Wed 18/1111:05 p.m. -
1 stop30h 05m
Deal found 9/9C$ 1,158
Tue 10/115:57 p.m. -
2 stops26h 13m
Tue 17/1111:05 p.m. -
1 stop25h 00m
Deal found 7/9C$ 1,165
Sat 28/1112:10 a.m. -
1 stop25h 20m
Thu 3/1211:35 a.m. -
1 stop21h 35m
Deal found 6/9C$ 1,171
Sun 1/112:30 p.m. -
2 stops53h 40m
Tue 17/1112:20 p.m. -
1 stop35h 45m
Deal found 7/9C$ 1,182
Tue 17/116:00 a.m. -
2 stops26h 05m
Tue 12/112:25 a.m. -
2 stops30h 23m
Deal found 6/9C$ 1,187
Mon 23/113:40 p.m. -
1 stop40h 25m
Mon 11/112:25 a.m. -
1 stop27h 55m
Deal found 7/9C$ 1,188
Sun 8/115:23 p.m. -
2 stops38h 42m
Mon 16/1112:25 a.m. -
2 stops33h 44m
Deal found 8/9C$ 1,195

Find flight deals from Seattle to Hanoi

Round-trip from

C$ 1,153

One-way from

C$ 572

Popular in

December

Cheapest in

September

Average price

C$ 913
Delta
  • Delta
  • 9/11-17/11
  • 2 total stops
  • 59h 26m total
  • Seattle to Hanoi
Search Deals
Singapore Airlines
  • Singapore Airlines
  • 12/2-31/12
  • 1 total stop
  • 39h 30m total
  • Seattle to Hanoi
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 162 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights 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

Price

Cheapest round-trip

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Tue 10/11

12:30 p.m.-11:10 a.m.

1 stop31h 40m

Hanoi Noibai

Wed 31/12

12:00 a.m.-8:00 a.m.

Nonstop0h 00m

C$ 597

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Mon 9/11

4:36 p.m.-11:10 a.m.

2 stops27h 34m

Hanoi Noibai

Wed 31/12

12:00 a.m.-8:00 a.m.

Nonstop0h 00m

C$ 608

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Wed 25/11

12:20 p.m.-11:05 p.m.

3 stops43h 45m

Hanoi Noibai

Wed 31/12

12:00 a.m.-8:00 a.m.

Nonstop0h 00m

C$ 636

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Tue 29/9

7:15 a.m.-9:35 p.m.

2 stops24h 20m

Hanoi Noibai

Wed 31/12

12:00 a.m.-8:00 a.m.

Nonstop0h 00m

C$ 637

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Mon 5/10

4:30 p.m.-10:15 p.m.

1 stop39h 45m

Hanoi Noibai

Wed 31/12

12:00 a.m.-8:00 a.m.

Nonstop0h 00m

C$ 669

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Sun 28/2

3:51 p.m.-11:05 p.m.

3 stops40h 14m

Hanoi Noibai

Wed 31/12

12:00 a.m.-8:00 a.m.

Nonstop0h 00m

C$ 691

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Sun 8/11

2:30 p.m.-11:10 a.m.

2 stops29h 40m

Hanoi Noibai

Wed 31/12

12:00 a.m.-8:00 a.m.

Nonstop0h 00m

C$ 698

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Sat 7/11

2:30 p.m.-11:10 a.m.

2 stops29h 40m

Hanoi Noibai

Wed 31/12

12:00 a.m.-8:00 a.m.

Nonstop0h 00m

C$ 698

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Fri 6/11

12:30 p.m.-9:45 p.m.

2 stops42h 15m

Hanoi Noibai

Wed 31/12

12:00 a.m.-8:00 a.m.

Nonstop0h 00m

C$ 698
Quickest round-trip

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Thu 31/12

3:50 p.m.-6:55 a.m.

1 stop24h 05m

Hanoi Noibai

Wed 31/12

12:00 a.m.-8:00 a.m.

Nonstop0h 00m

C$ 714

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Seattle to Hanoi

Have a flexible travel schedule? Discover the best time to fly to Hanoi from Seattle with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

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

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

The price you pay for your flight from Seattle to Hanoi may vary depending on when you book. For the best chance of a lower fare, look to book 86 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Hanoi?

Currently, September is the cheapest month in which you can book a flight from Seattle to Hanoi (average of C$ 913). Flying from Seattle to Hanoi in December is currently the most expensive (average of C$ 1,648). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to Hanoi?

Airfare is typical for this route at the moment.

Seattle to Hanoi flights typically cost between C$ 873 and C$ 1,246 in November.
The cheapest round-trip price found within the last 5 days was C$ 1,153 on Delta (9 Nov-17 Nov).

Related info for your journey

  • How long is the flight from Seattle to Hanoi?

    For as low as C$ 1,171, Korean Air can have you in Hanoi from Seattle in 25h 20m. The distance from Seattle to Hanoi is about 10987 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Seattle to Hanoi that include hotel bookings?

    Yes. In addition to deals on Seattle to Hanoi flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Hanoi?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Hanoi.

  • Can I find deals for business class flights from Seattle to Hanoi?

    Yes. Cheapflights offers flight deals from Seattle to Hanoi by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Hanoi?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Hanoi (average of C$ 913). Flying from Seattle to Hanoi in December is currently the most expensive (average of C$ 1,648). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

How does Cheapflights help users find flights from Seattle to Hanoi?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Hanoi. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Hanoi?

Cheapflights helps you find that perfect flight to Hanoi from Seattle by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Seattle to Hanoi with no change fees?

Need flexible booking options for your flight to Hanoi from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to Hanoi become cheaper?

Not ready to book yet? You can track prices for flights from Seattle to Hanoi on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.