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$301+ Cheap flights from Washington to Vietnam

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SGN
Aug 27 — Sep 31
Wed 8/27
Wed 9/3
1 adult, Economy
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Cheap flight deals from Washington to Vietnam

Keep the following information in mind while searching for Washington to Vietnam flight deals. Data was last updated August 22, 2025.

Round-trip from

$511
(FlightHub)

One-way from

$301
(oojo)

Popular in

June

Cheapest in

April

Average price

$814
From Washington to Vietnam
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One-way flight from Washington to Vietnam
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Highest demand for flights based on searches. 17% potential increase in price ($205 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Washington to Vietnam

Cheapest flights from Washington to Vietnam
Explore the most affordable flight options available from Washington to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2025.

This Gotogate deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/711:35 pmSEA - HAN
1 stop35h 55mPhilippine Airlines
Sat 9/202:30 amHAN - SEA
1 stop30h 45mPhilippine Airlines
Deal found 8/21$612
This oojo deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/511:35 pmSEA - HAN
1 stop35h 55mPhilippine Airlines
Sat 10/112:30 amHAN - SEA
1 stop30h 45mPhilippine Airlines
Deal found 8/20$636
This oojo deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/52:15 pmSEA - HAN
1 stop32h 00mAsiana Airlines
Sat 10/181:25 pmHAN - SEA
1 stop37h 05mAsiana Airlines
Deal found 8/21$657
This oojo deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/12:15 pmSEA - HAN
1 stop32h 00mAsiana Airlines
Wed 4/111:30 pmHAN - SEA
1 stop29h 25mAsiana Airlines
Deal found 8/21$658
This FlightHub deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/92:15 pmSEA - HAN
1 stop17h 45mAsiana Airlines
Fri 9/1911:30 pmHAN - SEA
1 stop27h 00mAsiana Airlines
Deal found 8/20$663
This FlightHub deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2612:10 amSEA - HAN
1 stop23h 00mAsiana Airlines
Wed 11/1911:30 pmHAN - SEA
1 stop29h 25mAsiana Airlines
Deal found 8/19$664
This FlightHub deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:10 amSEA - HAN
1 stop30h 50mAsiana Airlines
Wed 11/2611:30 pmHAN - SEA
1 stop29h 25mAsiana Airlines
Deal found 8/22$666
This Gotogate deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/182:15 pmSEA - HAN
1 stop17h 45mAsiana Airlines
Thu 9/251:25 pmHAN - SEA
1 stop37h 05mAsiana Airlines
Deal found 8/20$681
This oojo deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1512:10 amSEA - HAN
1 stop30h 50mAsiana Airlines
Sat 12/1311:30 pmHAN - SEA
1 stop29h 25mAsiana Airlines
Deal found 8/21$686
This CheapOair deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/25:41 pmSEA - SGN
2 stops28h 54mKorean Air
Mon 10/2011:45 pmSGN - SEA
1 stop24h 55mKorean Air
Deal found 8/20$688
This Gurufare deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/129:30 pmSEA - SGN
1 stop26h 10mPhilippine Airlines
Fri 11/213:40 pmSGN - SEA
1 stop17h 55mPhilippine Airlines
Deal found 8/20$689
This Asiana Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/72:15 pmSEA - HAN
1 stop32h 00mAsiana Airlines
Sun 9/2111:30 pmHAN - SEA
1 stop27h 00mAsiana Airlines
Deal found 8/21$691

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Vietnam that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 22, 2025.
Use the filters below to find and compare flights from Washington to Vietnam that are best for you.

Fly from

Washington

Fly to

Vietnam

Route

Depart

Return

Price

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sun 9/7

11:35 pm-1:30 am

1 stop35h 55m

Hanoi Noibai

Sat 9/20

2:30 am-7:15 pm

1 stop30h 45m

$612

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 1/6

9:30 pm-1:50 am

1 stop37h 20m

Hanoi Noibai

Wed 1/21

2:50 am-6:35 pm

1 stop30h 45m

$631

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 2/10

8:45 am-5:25 pm

1 stop41h 40m

Hanoi Noibai

Mon 2/23

6:30 pm-7:10 am

1 stop27h 40m

$656

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 11/11

12:10 am-10:00 pm

1 stop30h 50m

Hanoi Noibai

Wed 11/26

11:30 pm-1:55 pm

1 stop29h 25m

$658

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Mon 2/16

12:10 am-10:00 pm

1 stop30h 50m

Hanoi Noibai

Tue 3/3

11:30 pm-1:55 pm

1 stop29h 25m

$658

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Mon 1/5

12:10 am-10:00 pm

1 stop30h 50m

Hanoi Noibai

Thu 1/22

11:30 pm-1:55 pm

1 stop29h 25m

$658

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Mon 9/1

2:15 pm-12:15 pm

1 stop32h 00m

Hanoi Noibai

Wed 4/1

11:30 pm-2:55 pm

1 stop29h 25m

$658

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 1/13

12:10 am-1:10 pm

1 stop22h 00m

Hanoi Noibai

Wed 1/21

11:30 pm-1:55 pm

1 stop29h 25m

$658

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 9/18

2:15 pm-10:00 pm

1 stop17h 45m

Hanoi Noibai

Mon 9/29

11:30 pm-12:30 pm

1 stop27h 00m

$658

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Tue 10/21

12:15 pm-10:05 pm

1 stop19h 50m

Ho Chi Minh City

Mon 10/27

11:40 pm-2:20 pm

1 stop28h 40m

$691

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Vietnam

Have a flexible travel schedule? Discover the best time to fly to Vietnam from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Vietnam

What is the cheapest month to book a flight from State of Washington to Vietnam?

Currently, August is the cheapest month in which you can book a flight from State of Washington to Vietnam (average of $900). Flying from State of Washington to Vietnam in June is currently the most expensive (average of $1,430). 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.

What is the cheapest time of day to fly from WA to VN?

Find hourly flight availability from Washington to Vietnam. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 22, 2025.

When flying from State of Washington to Vietnam, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Washington to Vietnam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from State of Washington to Vietnam?

    Departing from State of Washington to Vietnam will take you 17h 40m. There are 7050 mi between State of Washington and Vietnam. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from State of Washington to Vietnam one-way?

    $301 is the cheapest one-way deal found within the past few days, from Philippine Airlines. You may also be able to find cheap deals on Singapore Airlines and Asiana Airlines, with prices starting from $317 and $361, respectively.

  • Can I find deals for flights from Washington to Vietnam that include hotel bookings?

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

  • How can I find direct flights from Washington to Vietnam?

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

  • Can I find deals for business class flights from Washington to Vietnam?

    Yes. Cheapflights offers flight deals from Washington to Vietnam 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 State of Washington to Vietnam?

    Currently, August is the cheapest month in which you can book a flight from State of Washington to Vietnam (average of $900). Flying from State of Washington to Vietnam in June is currently the most expensive (average of $1,430). 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

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Alternative routes for Washington to Vietnam

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Vietnam

Discover the top 10 airlines that operate flights from Washington to Vietnam. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$576Average$928FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$639Average$794FlexibilityNo cancel feeOn-time76%
Philippine AirlinesCheapest$682Average$753FlexibilityNo cancel feeOn-time60%
ANACheapest$688Average$808FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$691Average$1,071FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$696Average$853FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$708Average$1,073FlexibilityNo cancel feeOn-time81%
Japan AirlinesCheapest$717Average$946FlexibilityNo cancel feeOn-time79%
DeltaCheapest$736Average$908FlexibilityNo cancel feeOn-timeN/A
STARLUX AirlinesCheapest$760Average$928FlexibilityNo cancel feeOn-timeN/A

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