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$494+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SGN
Apr 25 — May 21
Sat 4/25
Sat 5/2
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 March 26, 2026.

This FlightHub deal was found by Cheapflights users on 3/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:59 pm
DCA
-
DAD
2 stops27h 01m
Multiple Airlines
Tue 9/295:30 pm
DAD
-
DCA
2 stops39h 29m
Multiple Airlines
Deal found 3/24$975
This oojo deal was found by Cheapflights users on 3/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/69:30 am
DCA
-
SGN
2 stops37h 10m
China Airlines
Mon 9/285:30 pm
SGN
-
DCA
2 stops37h 30m
China Airlines
Deal found 3/24$999
This oojo deal was found by Cheapflights users on 3/23. 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.
Tue 9/19:30 am
DCA
-
SGN
2 stops38h 25m
Singapore Airlines
Tue 10/612:20 pm
SGN
-
DCA
2 stops42h 40m
Singapore Airlines
Deal found 3/23$1,002
This FlightHub deal was found by Cheapflights users on 3/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:30 am
DCA
-
SGN
2 stops43h 50m
Multiple Airlines
Fri 10/305:50 pm
SGN
-
DCA
2 stops35h 09m
Multiple Airlines
Deal found 3/23$1,005
This Justfly.com deal was found by Cheapflights users on 3/24. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:59 pm
DCA
-
SGN
2 stops27h 41m
Multiple Airlines
Tue 11/175:50 pm
SGN
-
DCA
2 stops40h 09m
Multiple Airlines
Deal found 3/24$1,012
This Justfly.com deal was found by Cheapflights users on 3/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:59 pm
DCA
-
SGN
2 stops27h 41m
Multiple Airlines
Thu 9/245:30 pm
SGN
-
DCA
2 stops35h 29m
Multiple Airlines
Deal found 3/21$1,018
This Justfly.com deal was found by Cheapflights users on 3/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:04 pm
DCA
-
DAD
2 stops28h 56m
Multiple Airlines
Mon 10/265:35 pm
DAD
-
DCA
2 stops39h 24m
Multiple Airlines
Deal found 3/25$1,019
This FlightHub deal was found by Cheapflights users on 3/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:59 pm
DCA
-
SGN
2 stops27h 41m
Multiple Airlines
Tue 10/135:30 pm
SGN
-
DCA
2 stops35h 29m
Multiple Airlines
Deal found 3/23$1,019
This FlightHub deal was found by Cheapflights users on 3/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:04 pm
DCA
-
SGN
2 stops29h 36m
Multiple Airlines
Fri 11/65:50 pm
SGN
-
DCA
2 stops36h 09m
Multiple Airlines
Deal found 3/23$1,022
This FlightHub deal was found by Cheapflights users on 3/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:59 pm
DCA
-
SGN
2 stops27h 41m
Multiple Airlines
Tue 9/225:30 pm
SGN
-
DCA
2 stops35h 29m
Multiple Airlines
Deal found 3/23$1,027
This FlightHub deal was found by Cheapflights users on 3/21. 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.
Thu 9/106:59 pm
DCA
-
SGN
2 stops27h 41m
Multiple Airlines
Tue 9/295:30 pm
SGN
-
DCA
2 stops35h 29m
Multiple Airlines
Deal found 3/21$1,033
This China Airlines deal was found by Cheapflights users on 3/23. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:59 pm
DCA
-
SGN
2 stops27h 41m
Multiple Airlines
Fri 10/305:50 pm
SGN
-
DCA
2 stops37h 10m
Multiple Airlines
Deal found 3/23$1,036

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 March 26, 2026.

Round-trip from

$975
(FlightHub)

One-way from

$494
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,161
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. 15% potential increase in price ($210 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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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 March 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

Cheapest round-trip

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Tue 4/21

9:59 am-11:05 am

2 stops38h 06m

Hanoi Noibai

Thu 6/4

12:05 pm-8:06 pm

2 stops43h 01m

$1,157

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Wed 5/6

8:38 pm-9:35 pm

2 stops37h 57m

Hanoi Noibai

Wed 5/13

12:05 pm-12:43 pm

2 stops35h 38m

$1,268

Washington, D.C.Da Nang

DCA - DAD

DCADAD

Washington, D.C. Reagan-National

Wed 5/6

6:59 pm-4:30 pm

2 stops34h 31m

Da Nang

Wed 5/13

10:00 am-8:06 pm

2 stops45h 06m

$1,272

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Sat 9/12

10:00 am-9:35 pm

2 stops24h 35m

Hanoi Noibai

Wed 9/16

11:10 pm-5:07 pm

2 stops28h 57m

$1,289

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Thu 5/14

6:59 pm-11:05 am

2 stops29h 06m

Hanoi Noibai

Fri 6/5

6:00 pm-8:06 pm

2 stops37h 06m

$1,360

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Wed 4/8

6:30 am-10:05 pm

3 stops28h 35m

Ho Chi Minh City

Tue 5/5

7:00 am-11:58 pm

3 stops27h 58m

$1,386

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Tue 5/5

7:30 am-10:05 pm

2 stops27h 35m

Ho Chi Minh City

Tue 5/26

7:00 am-10:49 pm

3 stops26h 49m

$1,394

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Sat 4/25

7:40 am-11:15 pm

2 stops28h 35m

Ho Chi Minh City

Sat 5/23

7:30 am-8:45 pm

2 stops24h 15m

$1,405
Quickest round-trip

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Thu 7/16

10:15 am-9:35 pm

2 stops24h 20m

Hanoi Noibai

Sun 8/16

12:05 pm-11:28 pm

2 stops22h 23m

$1,410

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Tue 6/2

5:00 pm-9:35 pm

2 stops41h 35m

Hanoi Noibai

Wed 8/26

12:05 pm-4:14 pm

2 stops39h 09m

$1,413

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 60 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 $1,253). 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 March 26, 2026.
Get a feel of what it's like to fly with Japan Airlines,Delta, andUnited Airlines 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
1,748 reviews

Overall

8.3

Comfort

8.2

Crew

8.7

Entertainment

7.8

Food

7.7

Boarding

8.4

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
1,748 reviews
Japan Airlines
8.3
Very good
1,748 reviews

Overall

8.3

Comfort

8.2

Crew

8.7

Entertainment

7.8

Food

7.7

Boarding

8.4

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
8,330 reviews
Japan Airlines
8.3
Very good
1,748 reviews

Overall

8.3

Comfort

8.2

Crew

8.7

Entertainment

7.8

Food

7.7

Boarding

8.4

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
9,483 reviews
Japan Airlines
8.3
Very good
1,748 reviews

Overall

8.3

Comfort

8.2

Crew

8.7

Entertainment

7.8

Food

7.7

Boarding

8.4

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?

    EVA Air, United Airlines, and Delta can get you from Washington, D.C. Reagan-National Airport to Vietnam in just under 24h 35m. Your travel time can differ by up to 14h 50m. 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 - Hanoi Noibai or Washington, D.C. Reagan-National - Da Nang 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 $1,253). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Reagan-National to Vietnam

Discover the top 3 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 March 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
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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