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Cheap flights from Washington to Hanoi from $305

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 Hanoi departing on 3/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Washington to Hanoi

Cheap round-trip flights

Enter your travel dates to find the best prices.
Asiana Airlines Logo
12:10 am - 12:10 pm
SEA
-
HAN
21h 00m1 stop
Asiana Airlines Logo
1:30 pm - 2:55 pm
HAN
-
SEA
15h 25m1 stop
$638Asiana Airlines
Sun, Mar 1 - Wed, Mar 11
Multiple Airlines Logo
11:00 am - 9:45 pm
SEA
-
HAN
19h 45m1 stop
Multiple Airlines Logo
11:50 pm - 9:00 am
HAN
-
SEA
24h 10m1 stop
$644Multiple Airlines
Tue, Feb 3 - Tue, Feb 10
Philippine Airlines Logo
10:30 pm - 12:40 pm
SEA
-
HAN
24h 10m1 stop
Philippine Airlines Logo
1:45 am - 8:05 pm
HAN
-
SEA
32h 20m1 stop
$645Philippine Airlines
Thu, Mar 19 - Wed, Apr 8
Asiana Airlines Logo
12:10 am - 12:15 pm
SEA
-
HAN
22h 05m1 stop
Asiana Airlines Logo
1:25 pm - 2:55 pm
HAN
-
SEA
15h 30m1 stop
$652Asiana Airlines
Tue, Apr 7 - Fri, Apr 17
Asiana Airlines Logo
12:10 am - 10:25 pm
SEA
-
HAN
31h 15m1 stop
Asiana Airlines Logo
11:50 pm - 2:55 pm
HAN
-
SEA
29h 05m1 stop
$653Asiana Airlines
Sat, Feb 28 - Thu, Mar 19
Asiana Airlines Logo
12:10 am - 12:15 pm
SEA
-
HAN
22h 05m1 stop
Asiana Airlines Logo
1:25 pm - 2:55 pm
HAN
-
SEA
15h 30m1 stop
$698Asiana Airlines
Thu, Apr 9 - Tue, Apr 21
Korean Air Logo
7:15 am - 9:35 pm
SEA
-
HAN
24h 20m2 stops
Korean Air Logo
12:00 pm - 10:40 am
HAN
-
SEA
36h 40m1 stop
$724Korean Air
Fri, Apr 10 - Tue, Apr 21
Korean Air Logo
11:00 am - 11:10 am
SEA
-
HAN
33h 10m1 stop
Korean Air Logo
12:20 pm - 7:59 pm
HAN
-
SEA
21h 39m2 stops
$730Korean Air
Sun, Mar 1 - Thu, Mar 19
Delta Logo
5:15 pm - 9:45 pm
PDX
-
HAN
37h 30m2 stops
Delta Logo
11:05 pm - 10:48 pm
HAN
-
PDX
38h 43m2 stops
$853Delta
Sat, Jan 31 - Fri, Mar 6
China Eastern Logo
6:25 am - 1:45 am
PDX
-
HAN
28h 20m2 stops
China Eastern Logo
4:20 am - 4:10 pm
HAN
-
PDX
26h 50m2 stops
$896China Eastern
Sat, Jan 31 - Wed, Mar 4

Asiana Airlines flights from State of Washington to Hanoi

Our best Asiana Airlines deals on State of Washington to Hanoi flight tickets
Asiana Airlines
Mar 1
SEA12:10 amSeattle/Tacoma Intl
21h 00m
1 stop
HAN12:10 pmHanoi Noibai
Mar 11
HAN1:30 pmHanoi Noibai
15h 25m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
$638
Find similar
Asiana Airlines
Apr 7
SEA12:10 amSeattle/Tacoma Intl
22h 05m
1 stop
HAN12:15 pmHanoi Noibai
Apr 17
HAN1:25 pmHanoi Noibai
15h 30m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
$652
Find similar
Asiana Airlines
Feb 28
SEA12:10 amSeattle/Tacoma Intl
31h 15m
1 stop
HAN10:25 pmHanoi Noibai
Mar 19
HAN11:50 pmHanoi Noibai
29h 05m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
$653
Find similar

Philippine Airlines flights from State of Washington to Hanoi

Our best Philippine Airlines deals on State of Washington to Hanoi flight tickets
Philippine Airlines
Mar 19
SEA10:30 pmSeattle/Tacoma Intl
24h 10m
1 stop
HAN12:40 pmHanoi Noibai
Apr 8
HAN1:45 amHanoi Noibai
32h 20m
1 stop
SEA8:05 pmSeattle/Tacoma Intl
$645
Find similar
Philippine Airlines
Dec 23
SEA9:30 pmSeattle/Tacoma Intl
37h 15m
1 stop
HAN1:45 amHanoi Noibai
Dec 29
HAN2:50 amHanoi Noibai
30h 50m
1 stop
SEA6:40 pmSeattle/Tacoma Intl
$1,677
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from State of 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, momondo users made 832,500 searches. Data last updated December 22, 2025.
Use the filters below to find and compare flights from Washington to Hanoi that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sun 3/1

12:10 am-12:10 pm

1 stop21h 00m

Hanoi Noibai

Wed 3/11

1:30 pm-2:55 pm

1 stop15h 25m

$638

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 2/3

11:00 am-9:45 pm

1 stop19h 45m

Hanoi Noibai

Tue 2/10

11:50 pm-9:00 am

1 stop24h 10m

$644

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 3/19

10:30 pm-12:40 pm

1 stop24h 10m

Hanoi Noibai

Wed 4/8

1:45 am-8:05 pm

1 stop32h 20m

$645

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Tue 4/7

12:10 am-12:15 pm

1 stop22h 05m

Hanoi Noibai

Fri 4/17

1:25 pm-2:55 pm

1 stop15h 30m

$652

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sat 2/28

12:10 am-10:25 pm

1 stop31h 15m

Hanoi Noibai

Thu 3/19

11:50 pm-2:55 pm

1 stop29h 05m

$653

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Thu 4/9

12:10 am-12:15 pm

1 stop22h 05m

Hanoi Noibai

Tue 4/21

1:25 pm-2:55 pm

1 stop15h 30m

$698

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Fri 4/10

7:15 am-9:35 pm

2 stops24h 20m

Hanoi Noibai

Tue 4/21

12:00 pm-10:40 am

1 stop36h 40m

$724

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sun 3/1

11:00 am-11:10 am

1 stop33h 10m

Hanoi Noibai

Thu 3/19

12:20 pm-7:59 pm

2 stops21h 39m

$730

PortlandHanoi

PDX - HAN

PDXHAN

Portland

Sat 1/31

5:15 pm-9:45 pm

2 stops37h 30m

Hanoi Noibai

Fri 3/6

11:05 pm-10:48 pm

2 stops38h 43m

$853

PortlandHanoi

PDX - HAN

PDXHAN

Portland

Sat 1/31

6:25 am-1:45 am

2 stops28h 20m

Hanoi Noibai

Wed 3/4

4:20 am-4:10 pm

2 stops26h 50m

$896

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Hanoi from

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

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 Hanoi?

The cheapest month to fly to Hanoi from State of Washington is in September. Flight prices, which tend to average around $747, are often lower during this time because this is during the off-season. If you’re not able to fly to Hanoi in September, then April is your next best option. Flight prices from State of Washington to Hanoi during April average around $768.

What is the cheapest day to depart on your flight to Hanoi?

According to our data, Tuesday is the cheapest day to fly to Hanoi from State of Washington. The lowest ticket price found for a Tuesday departure recently was $836. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Hanoi on Monday is $1,201.

What is the cheapest time of day to depart on your flight to Hanoi?

Our most recent data shows that the best time of day to fly to Hanoi is in the morning. Flights from State of Washington to Hanoi during this time can be as low as $971. Try not to purchase tickets in the afternoon because they tend to be around $1,125. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Hanoi from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Hanoi for around $945 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Hanoi from State of Washington for as low as $732 on momondo.

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

You could potentially save up to 10% on your flight if you consider stops on a State of Washington to Hanoi flight.

Cheap State of Washington to Hanoi flight deals and tips

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

Fastest flight time

18h 45m

Direct flights

None
The fastest flight from State of Washington to Hanoi takes 18h 45m
There are no direct flights from State of Washington to Hanoi. There are no popular flight routes from State of Washington to Hanoi.
Search flight deals

  • When did momondo last update prices for flights from Washington to Hanoi Noibai Airport?

    Prices for flights from Washington to Hanoi Noibai Airport were last updated today.

  • How many operators does momondo search for flights from Washington to Hanoi Noibai Airport?

  • How old do you have to be to fly from Washington to Hanoi Noibai Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Hanoi Noibai Airport.

  • What documentation or ID do you need to fly to Hanoi Noibai Airport?

    The necessary travel and health documents for your Hanoi Noibai Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Hanoi

Compare and see reviews for airlines that fly from State of Washington to Hanoi with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $628Free CancellationRating
8.1
1,414 reviews
Search Singapore Airlines flights
Asiana AirlinesPriceFrom $642Free CancellationRating
8.2
495 reviews
Search Asiana Airlines flights
Philippine AirlinesPriceFrom $652Free CancellationRating
7.3
943 reviews
Search Philippine Airlines flights
China AirlinesPriceFrom $688Free CancellationRating
8.3
792 reviews
Search China Airlines flights
Korean AirPriceFrom $704Free CancellationRating
8.4
1,185 reviews
Search Korean Air flights
DeltaPriceFrom $728Free CancellationRating
7.9
8,014 reviews
Search Delta flights
STARLUX AirlinesPriceFrom $771Free CancellationRating
8.9
248 reviews
Search STARLUX Airlines flights
EVA AirPriceFrom $783Free CancellationRating
8.4
1,298 reviews
Search EVA Air flights

Why use momondo?

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

It is quick and easy to find Washington to Hanoi 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 Hanoi that suits you.

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

momondo does allow users to show only those flights to Hanoi 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 Hanoi?

momondo provides multiple filters to help you find the best flight to Hanoi 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 Hanoi right now. Can momondo alert me if prices change?

Price alerts on flights to Hanoi from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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