Cheap flights from Washington to Vietnam from $270

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Vietnam departing on 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
10:15 am - 11:30 am
SEA
-
HAN
35h 15m
1 stop
Singapore Airlines Logo
12:40 pm - 8:45 am
HAN
-
SEA
34h 05m
1 stop
$498Singapore Airlines
Sat, Aug 15 - Wed, Sep 9
Singapore Airlines Logo
10:15 am - 5:40 pm
SEA
-
HAN
41h 25m
1 stop
Singapore Airlines Logo
6:30 pm - 8:45 am
HAN
-
SEA
28h 15m
1 stop
$521Singapore Airlines
Fri, May 8 - Thu, May 14
Delta Logo
1:05 pm - 9:35 pm
SEA
-
HAN
18h 30m
1 stop
Delta Logo
11:10 pm - 1:37 pm
HAN
-
SEA
28h 27m
1 stop
$596Delta
Thu, Aug 13 - Wed, Sep 9
Korean Air Logo
1:20 pm - 9:35 pm
SEA
-
HAN
18h 15m
1 stop
Korean Air Logo
11:10 pm - 10:40 am
HAN
-
SEA
25h 30m
1 stop
$600Korean Air
Thu, Aug 13 - Sun, Sep 6
Korean Air Logo
7:20 am - 9:35 pm
SEA
-
HAN
24h 15m
2 stops
Korean Air Logo
11:10 pm - 10:40 am
HAN
-
SEA
25h 30m
1 stop
$605Korean Air
Thu, Aug 13 - Sun, Sep 6
Asiana Airlines Logo
12:55 am - 11:05 am
SEA
-
SGN
20h 10m
1 stop
Asiana Airlines Logo
12:10 am - 2:55 pm
SGN
-
SEA
28h 45m
1 stop
$636Asiana Airlines
Thu, Apr 16 - Sun, May 3
Cathay Pacific Logo
11:45 am - 9:40 am
SEA
-
PQC
31h 55m
1 stop
Cathay Pacific Logo
7:05 pm - 10:05 am
PQC
-
SEA
29h 00m
1 stop
$643Cathay Pacific
Mon, Apr 13 - Mon, Apr 20
Cathay Pacific Logo
11:45 am - 5:20 pm
SEA
-
SGN
39h 35m
1 stop
Cathay Pacific Logo
7:10 am - 10:05 am
SGN
-
SEA
16h 55m
1 stop
$645Cathay Pacific
Mon, Apr 6 - Thu, May 7
Asiana Airlines Logo
12:55 am - 10:50 pm
SEA
-
SGN
31h 55m
1 stop
Asiana Airlines Logo
12:05 pm - 2:55 pm
SGN
-
SEA
16h 50m
1 stop
$656Asiana Airlines
Mon, May 4 - Fri, May 29
Delta Logo
1:00 pm - 9:05 pm
SEA
-
DAD
18h 05m
1 stop
Delta Logo
10:55 pm - 1:11 pm
DAD
-
SEA
28h 16m
1 stop
$761Delta
Sun, Apr 26 - Wed, May 27

United Airlines flights from State of Washington to Vietnam

Our best United Airlines deals on State of Washington to Vietnam flight tickets
United Airlines
Apr 15
SEA6:00 amSeattle/Tacoma Intl
26h 05m
2 stops
SGN10:05 pmHo Chi Minh City
May 19
SGN11:15 pmHo Chi Minh City
29h 10m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$650
United Airlines
Apr 15
SEA6:00 amSeattle/Tacoma Intl
26h 05m
2 stops
SGN10:05 pmHo Chi Minh City
May 19
SGN11:15 pmHo Chi Minh City
29h 21m
2 stops
SEA2:36 pmSeattle/Tacoma Intl
$661
United Airlines
Apr 22
SEA6:00 amSeattle/Tacoma Intl
26h 05m
2 stops
SGN10:05 pmHo Chi Minh City
May 7
SGN7:00 amHo Chi Minh City
26h 48m
2 stops
SEA7:48 pmSeattle/Tacoma Intl
$672

China Airlines flights from State of Washington to Vietnam

Our best China Airlines deals on State of Washington to Vietnam flight tickets
China Airlines
Apr 30
SEA1:15 amSeattle/Tacoma Intl
18h 25m
1 stop
SGN9:40 amHo Chi Minh City
May 5
SGN10:50 amHo Chi Minh City
22h 25m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
$702
China Airlines
Apr 26
SEA1:15 amSeattle/Tacoma Intl
25h 15m
1 stop
DAD4:30 pmDa Nang
May 26
DAD5:30 pmDa Nang
15h 45m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
$786
China Airlines
Apr 27
SEA1:15 amSeattle/Tacoma Intl
17h 45m
1 stop
DAD9:00 amDa Nang
May 21
DAD10:00 amDa Nang
23h 15m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
$801

momondo Fare Finder

 
Customize your flight search to find flights from State of 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, momondo users made 832,500 searches. Data last updated March 1, 2026.
Use the filters below to find and compare flights from Washington to Vietnam that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sat 8/15

10:15 am-11:30 am

1 stop35h 15m

Hanoi Noibai

Wed 9/9

12:40 pm-8:45 am

1 stop34h 05m

$498

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Fri 5/8

10:15 am-5:40 pm

1 stop41h 25m

Hanoi Noibai

Thu 5/14

6:30 pm-8:45 am

1 stop28h 15m

$521

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 8/13

1:05 pm-9:35 pm

1 stop18h 30m

Hanoi Noibai

Wed 9/9

11:10 pm-1:37 pm

1 stop28h 27m

$596

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 8/13

1:20 pm-9:35 pm

1 stop18h 15m

Hanoi Noibai

Sun 9/6

11:10 pm-10:40 am

1 stop25h 30m

$600

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 8/13

7:20 am-9:35 pm

2 stops24h 15m

Hanoi Noibai

Sun 9/6

11:10 pm-10:40 am

1 stop25h 30m

$605

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Thu 4/16

12:55 am-11:05 am

1 stop20h 10m

Ho Chi Minh City

Sun 5/3

12:10 am-2:55 pm

1 stop28h 45m

$636

SeattlePhu Quoc

SEA - PQC

SEAPQC

Seattle/Tacoma Intl

Mon 4/13

11:45 am-9:40 am

1 stop31h 55m

Phu Quoc Duong Dang

Mon 4/20

7:05 pm-10:05 am

1 stop29h 00m

$643

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Mon 4/6

11:45 am-5:20 pm

1 stop39h 35m

Ho Chi Minh City

Thu 5/7

7:10 am-10:05 am

1 stop16h 55m

$645

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Mon 5/4

12:55 am-10:50 pm

1 stop31h 55m

Ho Chi Minh City

Fri 5/29

12:05 pm-2:55 pm

1 stop16h 50m

$656

SeattleDa Nang

SEA - DAD

SEADAD

Seattle/Tacoma Intl

Sun 4/26

1:00 pm-9:05 pm

1 stop18h 05m

Da Nang

Wed 5/27

10:55 pm-1:11 pm

1 stop28h 16m

$761

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Vietnam from

How to get the cheapest flight ticket from State of Washington to Vietnam

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 cheapest month to fly to Vietnam?

The month of April is, on average, the cheapest month to fly to Vietnam from State of Washington, with most prices found around $734. If you don’t want to visit Vietnam in April, then you should wait until November to fly from State of Washington, when ticket prices are also cheap, with an average price of $738.

How far in advance should I book a flight to Vietnam?

You are more likely to see cheaper flights to Vietnam from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Vietnam for around $876 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Vietnam from State of Washington for as low as $734 on momondo.

Can stopping save me money on State of Washington to Vietnam flights?

You could potentially save up to 30% on your flight if you consider stops on a State of Washington to Vietnam flight.

Cheap State of Washington to Vietnam flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Vietnam

Fastest flight time

18h 50m

Direct flights

None
The fastest flight from State of Washington to Vietnam takes 18h 50m
There are no direct flights from State of Washington to Vietnam. There are no popular flight routes from State of Washington to Vietnam.
  • When did momondo last update prices for flights from Washington to Vietnam?

    Prices for flights from Washington to Vietnam are updated daily.

  • How many operators does momondo search for flights from Washington to Vietnam?

  • How old do you have to be to fly from Washington to Vietnam?

    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 Washington to Vietnam.

  • What documentation or ID do you need to fly to Vietnam?

    The travel and health documents you'll need for your trip to Vietnam may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Vietnam. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Vietnam

Compare and see reviews for airlines that fly from State of Washington to Vietnam with momondo
Airline
Rating
Free Cancellation
Price
Korean AirPriceFrom $432Free CancellationRating
8.4
1,195 reviews
Search Korean Air flights
DeltaPriceFrom $493Free CancellationRating
7.9
8,239 reviews
Search Delta flights
Singapore AirlinesPriceFrom $509Free CancellationRating
8.2
1,465 reviews
Search Singapore Airlines flights
Philippine AirlinesPriceFrom $544Free CancellationRating
7.3
962 reviews
Search Philippine Airlines flights
Cathay PacificPriceFrom $604Free CancellationRating
7.6
1,180 reviews
Search Cathay Pacific flights
Asiana AirlinesPriceFrom $618Free CancellationRating
8.1
502 reviews
Search Asiana Airlines flights
United AirlinesPriceFrom $651Free CancellationRating
7.4
9,372 reviews
Search United Airlines flights
China AirlinesPriceFrom $659Free CancellationRating
8.3
809 reviews
Search China Airlines flights
ANAPriceFrom $688Free CancellationRating
8.4
1,107 reviews
Search ANA flights
STARLUX AirlinesPriceFrom $726Free CancellationRating
8.9
275 reviews
Search STARLUX Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Vietnam?

It is quick and easy to find Washington to Vietnam flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Vietnam that suits you.

Can I find flights from Washington to Vietnam with flexible booking policies on momondo?

momondo does allow users to show only those flights to Vietnam from Washington which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington to Vietnam?

momondo provides multiple filters to help you find the best flight to Vietnam from Washington. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington to Vietnam right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Vietnam, momondo offers a useful price alert feature which will track prices for flights to Vietnam from Washington and alert you when they change.

An easier way to manage your Vietnam trip

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1 adult
Tue 3/31
Tue 4/7

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