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$455+ Cheap flights from Reagan-National (DCA) 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SGN
Mar 28 — Apr 41
Sat 3/28
Sat 4/4
1 adult, Economy
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Cheap flight deals from Reagan-National to Vietnam

Cheapest flights from Reagan-National to Vietnam
Explore the most affordable flight options available from Reagan-National to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 26, 2026.

This oojo deal was found by Cheapflights users on 2/23. 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 8/235:45 pm
DCA
-
SGN
2 stops43h 35m
Cathay Pacific
Sun 9/276:20 pm
SGN
-
DCA
2 stops36h 55m
Cathay Pacific
Deal found 2/23$949
This KAYAK deal was found by Cheapflights users on 2/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1511:36 am
DCA
-
SGN
2 stops25h 44m
Cathay Pacific
Thu 4/2311:05 am
SGN
-
DCA
2 stops23h 54m
Cathay Pacific
Deal found 2/25$953
This oojo deal was found by Cheapflights users on 2/25. 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 4/137:50 pm
DCA
-
SGN
2 stops41h 30m
Cathay Pacific
Thu 5/147:10 am
SGN
-
DCA
2 stops48h 25m
Cathay Pacific
Deal found 2/25$960
This Delta deal was found by Cheapflights users on 2/23. 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.
Mon 8/247:40 am
DCA
-
HAN
2 stops26h 55m
Delta
Tue 9/811:10 pm
HAN
-
DCA
2 stops35h 18m
Delta
Deal found 2/23$961
This KAYAK deal was found by Cheapflights users on 2/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:41 pm
DCA
-
SGN
2 stops28h 34m
Multiple Airlines
Mon 4/2011:30 am
SGN
-
DCA
2 stops43h 30m
Multiple Airlines
Deal found 2/23$963
This KAYAK deal was found by Cheapflights users on 2/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:31 pm
DCA
-
SGN
2 stops24h 49m
Multiple Airlines
Mon 11/27:35 pm
SGN
-
DCA
2 stops34h 24m
Multiple Airlines
Deal found 2/24$964
This Korean Air deal was found by Cheapflights users on 2/24. 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.
Mon 4/1310:05 am
DCA
-
HAN
2 stops24h 30m
Korean Air
Wed 5/611:10 pm
HAN
-
DCA
2 stops28h 57m
Korean Air
Deal found 2/24$966
This KAYAK deal was found by Cheapflights users on 2/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:59 am
DCA
-
SGN
2 stops37h 16m
Multiple Airlines
Wed 9/236:05 pm
SGN
-
DCA
2 stops34h 54m
Multiple Airlines
Deal found 2/25$968
This Korean Air deal was found by Cheapflights users on 2/24. 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.
Sun 4/125:02 pm
DCA
-
HAN
2 stops54h 48m
Korean Air
Wed 5/611:10 pm
HAN
-
DCA
2 stops28h 57m
Korean Air
Deal found 2/24$972
This oojo deal was found by Cheapflights users on 2/25. 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 8/179:59 am
DCA
-
SGN
2 stops43h 21m
China Airlines
Thu 8/2710:50 am
SGN
-
DCA
2 stops44h 10m
China Airlines
Deal found 2/25$978
This oojo deal was found by Cheapflights users on 2/23. 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.
Thu 11/265:04 pm
DCA
-
SGN
2 stops28h 56m
China Airlines
Fri 12/411:00 am
SGN
-
DCA
2 stops45h 00m
China Airlines
Deal found 2/23$982
This Gurufare deal was found by Cheapflights users on 2/23. 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.
Mon 4/66:41 pm
DCA
-
SGN
2 stops28h 34m
Multiple Airlines
Tue 4/216:05 pm
SGN
-
DCA
2 stops36h 55m
Multiple Airlines
Deal found 2/23$988

Find flight deals from Reagan-National to Vietnam

Keep the following information in mind while searching for Reagan-National to Vietnam flight deals. Data was last updated February 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$949
(oojo)

One-way from

$455
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,179
Provider with most accurate pricing for Washington, D.C. (WAS)-Ho Chi Minh City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Ho Chi Minh City flights.
Search Deals
From Washington, D.C. Reagan-National to Vietnam
Search Deals
One-way flight from Washington, D.C. Reagan-National to Vietnam
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($236 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 February 26, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Vietnam that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Mon 4/27

10:05 am-9:35 pm

2 stops24h 30m

Hanoi Noibai

Sat 5/30

11:10 pm-5:07 pm

2 stops28h 57m

$1,061

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Sun 4/26

5:00 pm-9:35 pm

2 stops41h 35m

Hanoi Noibai

Sat 5/30

11:10 pm-5:07 pm

2 stops28h 57m

$1,067

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Sat 4/11

7:00 am-9:35 pm

2 stops27h 35m

Hanoi Noibai

Sat 4/18

11:10 pm-10:34 pm

2 stops34h 24m

$1,091

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Sun 3/29

9:00 am-9:35 pm

2 stops25h 35m

Hanoi Noibai

Thu 4/16

11:10 pm-2:56 pm

2 stops26h 46m

$1,091

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Wed 4/1

7:59 pm-10:05 pm

3 stops39h 06m

Ho Chi Minh City

Wed 4/15

7:00 am-11:59 pm

3 stops27h 59m

$1,096

Washington, D.C.Da Nang

DCA - DAD

DCADAD

Washington, D.C. Reagan-National

Sun 3/1

9:59 am-1:15 pm

2 stops39h 16m

Da Nang

Tue 6/2

12:55 pm-5:59 pm

2 stops40h 04m

$1,100

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Sat 4/11

6:00 am-9:35 pm

2 stops28h 35m

Hanoi Noibai

Sat 4/18

11:10 pm-5:30 pm

2 stops53h 20m

$1,107

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Sat 4/11

10:10 am-9:35 pm

2 stops24h 25m

Hanoi Noibai

Wed 4/22

11:10 pm-5:30 pm

2 stops29h 20m

$1,111

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Fri 4/24

7:00 am-9:55 pm

2 stops27h 55m

Ho Chi Minh City

Sun 5/31

11:15 pm-4:03 pm

3 stops51h 48m

$1,121

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Thu 4/2

3:30 pm-10:05 pm

3 stops43h 35m

Ho Chi Minh City

Thu 4/16

7:00 am-11:59 pm

3 stops27h 59m

$1,136

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 57 resultsSorted by cheapest first
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Best time to book a flight from Reagan-National to Vietnam

Have a flexible travel schedule? Discover the best time to fly to Vietnam from Reagan-National 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, D.C. Reagan-National Airport to Vietnam

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Vietnam?

Currently, July is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Vietnam (average of $574). Flying from Washington, D.C. Reagan-National Airport to Vietnam in May is currently the most expensive (average of $1,252). 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.

Reviews of airlines servicing Vietnam

Get insights into the airlines that provide service to Vietnam. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Vietnam. Reviews last updated February 26, 2026.
Get a feel of what it's like to fly with Japan Airlines, Delta, and Cathay Pacific from Washington, D.C. Reagan-National Airport to Vietnam by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,714 reviews

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Food

7.7

Overall

8.3

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

HNL - KIX

Local boy flight attendant was amazing. Super friendly and attentive.
Japan Airlines
8.3
Very good
1,714 reviews
Japan Airlines
8.3
Very good
1,714 reviews

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Food

7.7

Overall

8.3

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

HNL - KIX

Local boy flight attendant was amazing. Super friendly and attentive.
Delta
7.9
Good
8,243 reviews
Japan Airlines
8.3
Very good
1,714 reviews

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Food

7.7

Overall

8.3

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

HNL - KIX

Local boy flight attendant was amazing. Super friendly and attentive.
Cathay Pacific
7.6
Good
1,179 reviews
Japan Airlines
8.3
Very good
1,714 reviews

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Food

7.7

Overall

8.3

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

HNL - KIX

Local boy flight attendant was amazing. Super friendly and attentive.
United Airlines
7.4
Good
9,350 reviews
Japan Airlines
8.3
Very good
1,714 reviews

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Food

7.7

Overall

8.3

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

HNL - KIX

Local boy flight attendant was amazing. Super friendly and attentive.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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 Washington, D.C. Reagan-National Airport to Vietnam?

    Korean Air, Delta, and United Airlines can get you from Washington, D.C. Reagan-National Airport to Vietnam in just under 24h 30m. Your travel time can differ by up to 14h 36m. Airlines will cover a distance of 8276 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Washington, D.C. Reagan-National Airport to Vietnam?

    When deciding which route to take from Washington, D.C. Reagan-National Airport to Vietnam consider Washington, D.C. Reagan-National - Ho Chi Minh City, Washington, D.C. Reagan-National - Da Nang or Washington, D.C. Reagan-National - Hanoi Noibai as they are the most popular.

  • Can I find deals for flights from Reagan-National to Vietnam that include hotel bookings?

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

  • How can I find direct flights from Reagan-National to Vietnam?

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

  • Can I find deals for business class flights from Reagan-National to Vietnam?

    Yes. Cheapflights offers flight deals from Reagan-National 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 Washington, D.C. Reagan-National Airport to Vietnam?

    Currently, July is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Vietnam (average of $574). Flying from Washington, D.C. Reagan-National Airport to Vietnam in May is currently the most expensive (average of $1,252). 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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Top 4 airlines flying from Reagan-National to Vietnam

Discover the top 4 airlines that operate flights from Reagan-National 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 February 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$974Average$1,198FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$981Average$1,183FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$1,082Average$1,310FlexibilityNo cancel feeOn-time79%
DeltaCheapest$1,094Average$1,275FlexibilityNo cancel feeOn-timeN/A

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