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$536+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SGN
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
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 July 27, 2026.

This FlightHub deal was found by Cheapflights users on 7/22. 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 10/279:30 am
DCA
-
SGN
2 stops49h 30m
Multiple Airlines
Tue 11/103:45 pm
SGN
-
DCA
2 stops40h 15m
Multiple Airlines
Deal found 7/22$1,106
This FlightHub deal was found by Cheapflights users on 7/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/259:30 am
DCA
-
SGN
2 stops36h 35m
Multiple Airlines
Mon 2/221:55 am
SGN
-
DCA
2 stops30h 05m
Multiple Airlines
Deal found 7/25$1,118
This Delta deal was found by Cheapflights users on 7/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/259:32 am
DCA
-
SGN
2 stops25h 53m
Delta
Thu 12/38:00 am
SGN
-
DCA
2 stops25h 15m
Delta
Deal found 7/24$1,119
This FlightHub deal was found by Cheapflights users on 7/26. 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 10/149:30 am
DCA
-
SGN
2 stops37h 10m
Multiple Airlines
Wed 11/45:15 pm
SGN
-
DCA
2 stops38h 45m
Multiple Airlines
Deal found 7/26$1,120
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:30 am
DCA
-
HAN
2 stops26h 35m
United Airlines
Tue 11/1712:25 am
HAN
-
DCA
2 stops33h 32m
United Airlines
Deal found 7/24$1,121
This Justfly.com deal was found by Cheapflights users on 7/24. 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.
Thu 8/209:30 am
DCA
-
SGN
2 stops37h 10m
Multiple Airlines
Fri 9/115:30 pm
SGN
-
DCA
2 stops35h 29m
Multiple Airlines
Deal found 7/24$1,121
This KAYAK deal was found by Cheapflights users on 7/25. 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 8/59:30 am
DCA
-
SGN
2 stops27h 45m
ANA
Thu 9/107:00 am
SGN
-
DCA
2 stops24h 09m
ANA
Deal found 7/25$1,122
This Cheapflightsfares deal was found by Cheapflights users on 7/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:30 am
DCA
-
HAN
2 stops25h 45m
ANA
Tue 9/1511:35 pm
HAN
-
DCA
2 stops31h 34m
ANA
Deal found 7/26$1,123
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:46 am
DCA
-
SGN
2 stops27h 09m
United Airlines
Sun 10/117:00 am
SGN
-
DCA
2 stops25h 59m
United Airlines
Deal found 7/24$1,123
This United Airlines deal was found by Cheapflights users on 7/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:30 am
DCA
-
SGN
2 stops28h 45m
United Airlines
Wed 12/211:05 pm
SGN
-
DCA
2 stops24h 40m
United Airlines
Deal found 7/25$1,124
This FlightHub deal was found by Cheapflights users on 7/22. 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.
Mon 8/179:59 am
DCA
-
SGN
2 stops36h 56m
Multiple Airlines
Wed 8/261:50 am
SGN
-
DCA
2 stops29h 10m
Multiple Airlines
Deal found 7/22$1,125
This Delta deal was found by Cheapflights users on 7/22. 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.
Tue 9/17:45 am
DCA
-
SGN
2 stops27h 25m
Delta
Tue 9/297:30 am
SGN
-
DCA
2 stops24h 07m
Delta
Deal found 7/22$1,126

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 July 27, 2026.

Round-trip from

$1,119
(Delta)

One-way from

$536
(Kiwi.com)

Popular in

May

Cheapest in

April

Average price

$1,440
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. 7% potential increase in price ($103 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 27, 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.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Sun 8/30

7:46 am-9:55 pm

2 stops27h 09m

Ho Chi Minh City

Wed 10/7

11:15 pm-2:23 pm

2 stops26h 08m

$1,122

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Wed 10/21

9:32 am-11:15 pm

2 stops26h 43m

Ho Chi Minh City

Wed 11/18

8:00 am-11:18 pm

2 stops27h 18m

$1,126

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Sat 9/12

6:30 am-10:05 pm

3 stops28h 35m

Ho Chi Minh City

Sun 9/20

11:15 pm-8:09 pm

2 stops31h 54m

$1,126

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Sat 10/24

9:32 am-10:25 pm

2 stops25h 53m

Ho Chi Minh City

Sat 11/7

8:00 am-11:48 pm

2 stops27h 48m

$1,129

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Sun 8/30

9:39 am-10:10 pm

2 stops25h 31m

Ho Chi Minh City

Fri 10/2

7:30 am-10:40 pm

2 stops26h 10m

$1,129
Quickest round-trip

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Sun 8/30

9:39 am-10:10 pm

2 stops25h 31m

Ho Chi Minh City

Fri 10/9

7:30 am-8:39 pm

2 stops24h 09m

$1,129

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Sun 8/30

9:39 am-10:10 pm

2 stops25h 31m

Ho Chi Minh City

Fri 10/16

7:30 am-10:00 pm

2 stops25h 30m

$1,129

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Sat 8/1

7:10 pm-10:05 pm

3 stops39h 55m

Ho Chi Minh City

Thu 8/27

7:00 am-10:30 pm

2 stops26h 30m

$1,144

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Thu 10/15

7:28 am-10:15 pm

2 stops27h 47m

Hanoi Noibai

Sun 11/1

12:25 am-8:38 pm

2 stops32h 13m

$1,145

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Tue 10/13

8:25 am-10:15 pm

2 stops26h 50m

Hanoi Noibai

Wed 11/4

12:25 am-6:52 pm

2 stops30h 27m

$1,145

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

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, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Vietnam (average of $985). Flying from Washington, D.C. Reagan-National Airport to Vietnam in July is currently the most expensive (average of $1,695). 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 July 27, 2026.
Get a feel of what it's like to fly with Delta and United 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.
Delta
7.8
Good
8,483 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Overall

7.8

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,483 reviews
Delta
7.8
Good
8,483 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Overall

7.8

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
10,041 reviews
Delta
7.8
Good
8,483 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Overall

7.8

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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?

    United Airlines, Delta, and ANA can get you from Washington, D.C. Reagan-National Airport to Vietnam in just under 25h 45m. Your travel time can differ by up to 1h 24m. 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, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Vietnam (average of $985). Flying from Washington, D.C. Reagan-National Airport to Vietnam in July is currently the most expensive (average of $1,695). 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 2 airlines flying from Reagan-National to Vietnam

Discover the top 2 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 July 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$985Average$1,183FlexibilityNo cancel feeOn-time69%
DeltaCheapest$1,094Average$1,275FlexibilityNo cancel feeOn-timeN/A

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