How does KAYAK find such low prices on flights from Washington to Hanoi?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Hanoi.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Hanoi?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Hanoi from Washington is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Washington to Hanoi?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Hanoi with an airline and back to Washington with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Hanoi?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Hanoi from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$400 CHEAP FLIGHTS from Washington to Hanoi

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Flight Deals

Cheap Flights from Washington to Hanoi

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Washington to Hanoi

Fri, Jan 15 - Mon, Jan 25

8:40 am - 5:30 pmSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

41h 50m1 stop Singapore Changi

12:45 pm - 7:05 amHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

33h 20m1 stop Singapore Changi

$636Singapore Airlines

Tue, Jan 26 - Tue, Mar 2

8:40 am - 5:30 pmSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

41h 50m1 stop Singapore Changi

6:20 pm - 7:05 amHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

27h 45m1 stop Singapore Changi

$644Singapore Airlines

Tue, Feb 23 - Mon, Mar 15

12:10 am - 10:35 amSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

19h 25m1 stop Taipei City Taiwan Taoyuan Intl

5:30 pm - 7:10 pmHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

15h 40m1 stop Taipei City Taiwan Taoyuan Intl

$775China Airlines

Sun, Nov 1 - Sun, Nov 15

12:10 am - 4:30 pmSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

25h 20m1 stop Taipei City Taiwan Taoyuan Intl

5:30 pm - 6:10 pmHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

15h 40m1 stop Taipei City Taiwan Taoyuan Intl

$779China Airlines

Tue, Nov 17 - Tue, Nov 24

12:10 am - 9:45 pmSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

30h 35m1 stop Incheon Intl

11:05 pm - 9:05 amHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

25h 00m1 stop Incheon Intl

$815Korean Air

Mon, Nov 2 - Sun, Nov 15

7:16 am - 9:45 pmSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

23h 29m2 stops San Francisco Incheon Intl

11:05 pm - 9:05 amHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

25h 00m1 stop Incheon Intl

$819Korean Air

Thu, Mar 4 - Sun, Mar 28

10:25 am - 10:05 amSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

32h 40m1 stop Hong Kong Intl

7:10 pm - 10:05 amHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

28h 55m1 stop Hong Kong Intl

$820Cathay Pacific

Thu, Mar 11 - Mon, Mar 22

10:25 am - 10:05 amSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

32h 40m1 stop Hong Kong Intl

11:15 am - 9:45 amHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

36h 30m1 stop Hong Kong Intl

$822Cathay Pacific

Mon, Nov 16 - Sun, Nov 22

12:30 pm - 11:10 amSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

31h 40m1 stop Incheon Intl

11:05 pm - 11:51 amHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

27h 46m1 stop Incheon Intl

$836Delta

Mon, Nov 16 - Wed, Nov 25

12:30 pm - 9:45 pmSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

18h 15m1 stop Incheon Intl

11:05 pm - 11:51 amHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

27h 46m1 stop Incheon Intl

$836Delta

Recent last minute flight deals from Washington to Hanoi

Mon, Sep 21 - Sun, Sep 27

1:15 am - 10:30 amSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

19h 15m1 stop Taipei City Taiwan Taoyuan Intl

5:50 pm - 7:15 pmHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

15h 25m1 stop Taipei City Taiwan Taoyuan Intl

$812China Airlines

Tue, Sep 22 - Sun, Sep 27

1:15 am - 10:30 amSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

19h 15m1 stop Taipei City Taiwan Taoyuan Intl

5:50 pm - 7:15 pmHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

15h 25m1 stop Taipei City Taiwan Taoyuan Intl

$813China Airlines

Wed, Sep 23 - Wed, Sep 30

11:45 am - 9:55 amSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

32h 10m1 stop Hong Kong Intl

7:10 pm - 10:05 amHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

28h 55m1 stop Hong Kong Intl

$832Cathay Pacific

Wed, Sep 23 - Sun, Sep 27

5:59 pm - 6:10 pmSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

34h 11m2 stops Los Angeles Hong Kong Intl

7:10 pm - 10:05 amHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

28h 55m1 stop Hong Kong Intl

$873Multiple Airlines

Tue, Sep 22 - Sun, Sep 27

3:58 pm - 9:55 amSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

27h 57m2 stops Los Angeles Hong Kong Intl

7:10 pm - 10:05 amHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

28h 55m1 stop Hong Kong Intl

$873Multiple Airlines

Fri, Sep 18 - Fri, Sep 25

12:10 am - 12:15 pmSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

22h 05m1 stop Incheon Intl

1:25 pm - 3:15 pmHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

15h 50m1 stop Incheon Intl

$927Asiana Airlines

Sun, Sep 20 - Fri, Sep 25

1:00 pm - 10:35 amSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

31h 35m1 stop Incheon Intl

11:10 pm - 1:37 pmHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

28h 27m1 stop Incheon Intl

$957Delta

Mon, Sep 21 - Tue, Oct 6

5:49 pm - 10:35 amPDX Portland-HAN Hanoi Noibai

50h 46m2 stops Seattle/Tacoma Intl Incheon Intl

11:10 pm - 10:45 amHAN Hanoi Noibai-PDX Portland

49h 35m2 stops Incheon Intl Seattle/Tacoma Intl

$980Delta

Sun, Sep 20 - Fri, Sep 25

12:50 pm - 10:35 amSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

31h 45m1 stop Incheon Intl

11:10 pm - 4:30 pmHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

31h 20m2 stops Incheon Intl San Francisco

$980Korean Air

Sun, Sep 20 - Fri, Sep 25

4:51 pm - 10:35 amSEA Seattle/Tacoma Intl-HAN Hanoi Noibai

27h 44m2 stops Las Vegas Harry Reid Intl Incheon Intl

12:05 pm - 9:54 pmHAN Hanoi Noibai-SEA Seattle/Tacoma Intl

23h 49m2 stops Incheon Intl Las Vegas Harry Reid Intl

$985Korean Air

Useful Info

Low season	June
High season	February
Cheapest flight	$400

Best time to beat the crowds but there is an average 19% increase in price.

Most popular time to fly and prices are also 12% lower on average.

Flight from Seattle to Hanoi

How does KAYAK find such low prices on flights from Washington to Hanoi?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Hanoi.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Hanoi?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Hanoi from Washington is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Washington to Hanoi?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Hanoi with an airline and back to Washington with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Hanoi?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Hanoi from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.