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Cheap flights from Seattle to Hanoi from C$ 581

SEA — HAN
23 Nov — 30 Nov1
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

Wed 2/1212:35 p.m. -
1 stop18h 10m
Mon 21/1211:05 p.m. -
1 stop27h 51m
Deal found 20/10C$ 1,110
Thu 12/1111:00 a.m. -
1 stop33h 10m
Mon 23/1111:05 p.m. -
1 stop25h 00m
Deal found 20/10C$ 1,161
Tue 17/1111:00 a.m. -
1 stop33h 10m
Tue 24/1111:05 p.m. -
1 stop25h 00m
Deal found 21/10C$ 1,162
Sun 22/1112:30 p.m. -
1 stop31h 40m
Tue 1/1211:05 p.m. -
1 stop27h 51m
Deal found 20/10C$ 1,193
Mon 23/1111:00 a.m. -
1 stop33h 10m
Sat 26/1212:20 p.m. -
1 stop16h 50m
Deal found 21/10C$ 1,199
Thu 12/117:20 a.m. -
2 stops36h 50m
Mon 23/1111:05 p.m. -
2 stops36h 04m
Deal found 20/10C$ 1,224
Sun 29/119:30 p.m. -
1 stop36h 55m
Wed 2/122:35 a.m. -
1 stop31h 10m
Deal found 20/10C$ 1,234
Tue 1/1211:00 a.m. -
1 stop19h 45m
Fri 11/1211:05 p.m. -
1 stop25h 00m
Deal found 21/10C$ 1,235
Thu 3/1211:00 a.m. -
1 stop33h 10m
Tue 22/1211:05 p.m. -
1 stop25h 00m
Deal found 21/10C$ 1,237

Find flight deals from Seattle to Hanoi

Round-trip from

C$ 1,050

One-way from

C$ 581

Popular in

December

Cheapest in

September

Average price

C$ 1,224
Delta
  • Delta
  • 24/2-16/3
  • 2 total stops
  • 59h 06m total
  • Seattle to Hanoi
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Singapore Airlines
  • Singapore Airlines
  • 14/3-31/12
  • 1 total stop
  • 39h 30m total
  • Seattle to Hanoi
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 249 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 80 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2026
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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

Mon 30/11

11:00 a.m.-9:45 p.m.

1 stop19h 45m

Hanoi Noibai

Wed 31/12

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

Nonstop0h 00m

C$ 590
Quickest round-trip

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Mon 7/12

12:35 p.m.-9:45 p.m.

1 stop18h 10m

Hanoi Noibai

Wed 31/12

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

Nonstop0h 00m

C$ 592

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Tue 10/11

10:25 a.m.-10:05 a.m.

1 stop32h 40m

Hanoi Noibai

Wed 31/12

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

Nonstop0h 00m

C$ 604

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Sun 31/1

5:51 p.m.-9:45 p.m.

2 stops36h 54m

Hanoi Noibai

Wed 31/12

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

Nonstop0h 00m

C$ 623

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Tue 1/12

12:35 p.m.-11:10 a.m.

1 stop31h 35m

Hanoi Noibai

Wed 31/12

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

Nonstop0h 00m

C$ 657

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Fri 26/2

12:00 p.m.-9:45 p.m.

2 stops42h 45m

Hanoi Noibai

Wed 31/12

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

Nonstop0h 00m

C$ 664

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Thu 3/12

11:00 a.m.-9:45 p.m.

1 stop19h 45m

Hanoi Noibai

Wed 31/12

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

Nonstop0h 00m

C$ 665

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Wed 2/12

12:31 p.m.-9:45 p.m.

2 stops42h 14m

Hanoi Noibai

Wed 31/12

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

Nonstop0h 00m

C$ 665

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Tue 10/11

9:20 p.m.-11:10 a.m.

2 stops46h 50m

Hanoi Noibai

Wed 31/12

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

Nonstop0h 00m

C$ 676

SeattleHanoi

SEA Seattle/Tacoma Intl - HAN Hanoi Noibai

SEAHAN

Seattle/Tacoma Intl

Tue 17/11

7:20 a.m.-11:10 a.m.

2 stops36h 50m

Hanoi Noibai

Wed 31/12

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

Nonstop0h 00m

C$ 676

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/10

Showing 1-10 of 21 resultsSorted by cheapest first
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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 69 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$ 973). Flying from Seattle to Hanoi in December is currently the most expensive (average of C$ 1,865). 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 below average for this route at the moment.

Seattle to Hanoi flights typically cost between C$ 1,108 and C$ 1,318 in February.
The cheapest round-trip price found within the last 5 days was C$ 1,050 on Delta (25 Feb-16 Mar).

Related info for your journey

  • How long is the flight from Seattle to Hanoi?

    For as low as C$ 1,200, Korean Air can have you in Hanoi from Seattle in 17h 55m. 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$ 973). Flying from Seattle to Hanoi in December is currently the most expensive (average of C$ 1,865). 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

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