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$314+ Cheap flights from Washington to Hanoi (HAN)

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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HAN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Washington to Hanoi

Keep the following information in mind while searching for Washington to Hanoi flight deals. Data was last updated September 15, 2025.

Round-trip from

$628
(FlightHub)

One-way from

$314
(CrystalTravel)

Popular in

December

Cheapest in

September

Average price

$768
From Washington to Hanoi Noibai
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One-way flight from Washington to Hanoi Noibai
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Highest demand for flights based on searches. 10% potential increase in price ($111 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Washington to Hanoi

Cheapest flights from Washington to Hanoi
Explore the most affordable flight options available from Washington to Hanoi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Gotogate deal was found by Cheapflights users on 9/13. 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 9/2111:35 pmSEA - HAN
1 stop35h 55mPhilippine Airlines
Sat 10/42:30 amHAN - SEA
1 stop30h 45mPhilippine Airlines
Deal found 9/13$629
This oojo deal was found by Cheapflights users on 9/14. 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.
Wed 9/2411:35 pmSEA - HAN
1 stop35h 10mPhilippine Airlines
Tue 10/142:30 amHAN - SEA
1 stop30h 45mPhilippine Airlines
Deal found 9/14$643
This FlightHub deal was found by Cheapflights users on 9/13. 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.
Wed 9/242:15 pmSEA - HAN
1 stop32h 00mAsiana Airlines
Wed 10/151:25 pmHAN - SEA
1 stop37h 05mAsiana Airlines
Deal found 9/13$661
This FlightHub deal was found by Cheapflights users on 9/15. 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 11/259:30 pmSEA - HAN
1 stop37h 20mPhilippine Airlines
Mon 12/12:50 amHAN - SEA
1 stop30h 50mPhilippine Airlines
Deal found 9/15$665
This FlightHub deal was found by Cheapflights users on 9/15. 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.
Wed 11/269:30 pmSEA - HAN
1 stop37h 20mPhilippine Airlines
Mon 12/12:50 amHAN - SEA
1 stop30h 50mPhilippine Airlines
Deal found 9/15$666
This Gotogate deal was found by Cheapflights users on 9/13. 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 9/212:15 pmSEA - HAN
1 stop32h 00mAsiana Airlines
Sun 10/511:30 pmHAN - SEA
1 stop27h 00mAsiana Airlines
Deal found 9/13$668
This Gotogate deal was found by Cheapflights users on 9/14. 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.
Tue 10/2812:10 amSEA - HAN
1 stop31h 50mAsiana Airlines
Wed 11/511:30 pmHAN - SEA
1 stop29h 25mAsiana Airlines
Deal found 9/14$677
This oojo deal was found by Cheapflights users on 9/13. 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.
Fri 9/2611:35 pmSEA - HAN
1 stop35h 10mPhilippine Airlines
Sat 10/112:30 amHAN - SEA
1 stop30h 45mPhilippine Airlines
Deal found 9/13$680
This FlightHub deal was found by Cheapflights users on 9/15. 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 11/1812:10 amSEA - HAN
1 stop22h 00mAsiana Airlines
Wed 11/2611:30 pmHAN - SEA
1 stop29h 25mAsiana Airlines
Deal found 9/15$689
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/75:30 amPDX - HAN
2 stops38h 40mDelta
Mon 11/1012:20 pmHAN - PDX
2 stops25h 21mDelta
Deal found 9/15$800
This Korean Air deal was found by Cheapflights users on 9/15. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:00 amPDX - HAN
2 stops24h 45mKorean Air
Thu 11/1312:20 pmHAN - PDX
2 stops39h 58mKorean Air
Deal found 9/15$806
This oojo deal was found by Cheapflights users on 9/14. 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.
Wed 9/172:30 pmPDX - HAN
2 stops36h 20mChina Airlines
Tue 9/305:50 pmHAN - PDX
2 stops18h 57mChina Airlines
Deal found 9/14$855

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Hanoi 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 September 15, 2025.
Use the filters below to find and compare flights from Washington to Hanoi that are best for you.

Fly from

Washington

Fly to

Hanoi

Route

Depart

Return

Price

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 10/28

12:10 am-10:00 pm

1 stop31h 50m

Hanoi Noibai

Wed 11/5

11:30 pm-1:55 pm

1 stop29h 25m

$677

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 10/29

12:00 pm-9:45 pm

1 stop19h 45m

Hanoi Noibai

Wed 11/5

12:20 pm-9:00 am

1 stop35h 40m

$693

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 9/24

7:15 am-9:35 pm

2 stops24h 20m

Hanoi Noibai

Wed 10/15

11:10 pm-10:40 am

1 stop25h 30m

$738

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sun 10/12

1:10 am-10:35 am

1 stop19h 25m

Hanoi Noibai

Mon 10/20

5:50 pm-7:20 pm

1 stop15h 30m

$748

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 10/29

7:10 am-1:45 am

2 stops28h 35m

Hanoi Noibai

Tue 11/4

2:45 am-2:44 pm

2 stops26h 59m

$753

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Mon 11/24

11:00 am-9:45 pm

1 stop19h 45m

Hanoi Noibai

Wed 12/3

12:20 pm-9:00 am

1 stop35h 40m

$760

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 11/19

11:00 am-9:45 pm

1 stop19h 45m

Hanoi Noibai

Wed 11/26

12:20 pm-9:00 am

1 stop35h 40m

$760

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 11/19

11:00 am-9:45 pm

1 stop19h 45m

Hanoi Noibai

Tue 11/25

11:05 pm-9:00 am

1 stop24h 55m

$760

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 11/20

11:00 am-11:10 am

1 stop33h 10m

Hanoi Noibai

Tue 11/25

11:05 pm-9:00 am

1 stop24h 55m

$760

PortlandHanoi

PDX - HAN

PDXHAN

Portland

Fri 11/7

5:30 am-9:45 pm

2 stops25h 15m

Hanoi Noibai

Thu 11/13

12:20 pm-11:56 pm

2 stops26h 36m

$800

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 37 results
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Best time to book a flight from Washington to Hanoi

Have a flexible travel schedule? Discover the best time to fly to Hanoi 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 Hanoi

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

Currently, September is the cheapest month in which you can book a flight from State of Washington to Hanoi (average of $864). Flying from State of Washington to Hanoi in December is currently the most expensive (average of $1,600). 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 HAN?

Find hourly flight availability from Washington to Hanoi. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

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

How much does it cost to fly round-trip from State of Washington to Hanoi?

Related info for your journey

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

  • What airport do you fly into for flights to Hanoi from Washington?

    For a flight from Washington to Hanoi, you will be flying into Noibai. Hanoi Noibai (HAN) is just 14.2 mi from the center of the city.

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

    Departing from State of Washington to Hanoi will take you 19h 25m. There are 6827 mi between State of Washington and Hanoi. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from State of Washington to Hanoi are Philippine Airlines ($314), Asiana Airlines ($363), and Korean Air ($387).

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from State of Washington to Hanoi (average of $864). Flying from State of Washington to Hanoi in December is currently the most expensive (average of $1,600). 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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Alternative routes for Washington to Hanoi

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Top 7 airlines flying from Washington to Hanoi

Discover the top 7 airlines that operate flights from Washington to Hanoi. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$637Average$737FlexibilityNo cancel feeOn-time76%
Singapore AirlinesCheapest$682Average$1,007FlexibilityNo cancel feeOn-time81%
Korean AirCheapest$732Average$906FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$747Average$847FlexibilityNo cancel feeOn-time70%
DeltaCheapest$764Average$864FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$783Average$944FlexibilityNo cancel feeOn-time74%
STARLUX AirlinesCheapest$790Average$907FlexibilityNo cancel feeOn-timeN/A

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