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$628+ 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
Jun 27 — Jul 41
Sat 6/27
Sat 7/4
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 May 28, 2026.

This oojo deal was found by Cheapflights users on 5/27. 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 10/229:30 am
DCA
-
SGN
2 stops42h 05m
Singapore Airlines
Thu 11/124:15 pm
SGN
-
DCA
2 stops39h 45m
Singapore Airlines
Deal found 5/27$1,118
This oojo deal was found by Cheapflights users on 5/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:30 am
DCA
-
SGN
2 stops45h 55m
Singapore Airlines
Wed 10/284:15 pm
SGN
-
DCA
2 stops38h 45m
Singapore Airlines
Deal found 5/26$1,124
This FlightHub deal was found by Cheapflights users on 5/26. 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 9/309:30 am
DCA
-
SGN
2 stops42h 05m
Multiple Airlines
Wed 10/284:15 pm
SGN
-
DCA
2 stops38h 45m
Multiple Airlines
Deal found 5/26$1,125
This Ovago deal was found by Cheapflights users on 5/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:20 am
DCA
-
SGN
2 stops24h 00m
Multiple Airlines
Wed 9/307:10 am
SGN
-
DCA
2 stops23h 56m
Multiple Airlines
Deal found 5/27$1,189
This KAYAK deal was found by Cheapflights users on 5/28. 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.
Mon 8/246:20 am
DCA
-
SGN
2 stops24h 00m
Multiple Airlines
Mon 9/1411:05 am
SGN
-
DCA
2 stops23h 54m
Multiple Airlines
Deal found 5/28$1,191
This FlightHub deal was found by Cheapflights users on 5/27. 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.
Sun 9/69:30 am
DCA
-
SGN
2 stops38h 25m
Multiple Airlines
Wed 9/233:50 pm
SGN
-
DCA
2 stops39h 10m
Multiple Airlines
Deal found 5/27$1,208
This FlightHub deal was found by Cheapflights users on 5/27. 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 stops42h 05m
Multiple Airlines
Fri 10/304:15 pm
SGN
-
DCA
2 stops38h 45m
Multiple Airlines
Deal found 5/27$1,212
This oojo deal was found by Cheapflights users on 5/26. 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 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 stops45h 55m
Singapore Airlines
Mon 10/1912:20 pm
SGN
-
DCA
2 stops42h 40m
Singapore Airlines
Deal found 5/26$1,215
This FlightHub deal was found by Cheapflights users on 5/27. 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 9/249:30 am
DCA
-
SGN
2 stops38h 25m
Multiple Airlines
Mon 10/264:15 pm
SGN
-
DCA
2 stops38h 45m
Multiple Airlines
Deal found 5/27$1,218
This Justfly.com deal was found by Cheapflights users on 5/27. 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 11/35:00 pm
DCA
-
SGN
2 stops29h 00m
Multiple Airlines
Tue 12/15:50 pm
SGN
-
DCA
2 stops34h 18m
Multiple Airlines
Deal found 5/27$1,220
This FlightHub deal was found by Cheapflights users on 5/27. 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 8/229:30 am
DCA
-
SGN
2 stops38h 25m
Multiple Airlines
Mon 9/213:50 pm
SGN
-
DCA
2 stops39h 10m
Multiple Airlines
Deal found 5/27$1,221
This Justfly.com deal was found by Cheapflights users on 5/26. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:59 pm
DCA
-
DAD
2 stops53h 36m
Multiple Airlines
Tue 9/1512:55 pm
DAD
-
DCA
2 stops42h 05m
Multiple Airlines
Deal found 5/26$1,259

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 May 28, 2026.

Round-trip from

$1,189
(Ovago)

One-way from

$685
(Justfly.com)

Popular in

June

Cheapest in

September

Average price

$1,370
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 ($229 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 28, 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 9/6

9:30 am-10:55 am

2 stops38h 25m

Ho Chi Minh City

Wed 9/23

3:50 pm-8:00 pm

2 stops39h 10m

$1,208

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Tue 10/20

8:30 am-10:15 pm

2 stops26h 45m

Hanoi Noibai

Sun 11/15

12:25 am-8:10 pm

2 stops31h 45m

$1,271

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

Tue 10/13

11:10 pm-10:53 pm

2 stops34h 43m

$1,300

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Fri 9/11

10:00 am-9:35 pm

2 stops24h 35m

Hanoi Noibai

Mon 10/12

11:10 pm-10:15 pm

2 stops34h 05m

$1,300

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Wed 9/9

10:00 am-9:35 pm

2 stops24h 35m

Hanoi Noibai

Sat 10/10

11:10 pm-11:18 pm

2 stops35h 08m

$1,300

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Tue 10/13

8:20 am-9:35 pm

2 stops26h 15m

Hanoi Noibai

Thu 10/22

11:10 pm-6:05 pm

2 stops29h 55m

$1,306
Quickest round-trip

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Sat 10/17

8:20 am-9:35 pm

2 stops26h 15m

Hanoi Noibai

Mon 11/16

11:05 pm-1:25 pm

2 stops26h 20m

$1,306

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Thu 11/5

8:30 am-11:05 pm

2 stops26h 35m

Hanoi Noibai

Fri 11/20

12:25 am-8:10 pm

2 stops31h 45m

$1,311

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Sat 11/14

6:25 pm-9:45 pm

2 stops39h 20m

Hanoi Noibai

Wed 12/9

11:05 pm-1:25 pm

2 stops26h 20m

$1,313

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Sun 10/18

5:00 pm-9:35 pm

2 stops41h 35m

Hanoi Noibai

Wed 10/21

11:10 pm-6:05 pm

2 stops29h 55m

$1,322

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/24

Showing 1-10 of 55 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 $970). Flying from Washington, D.C. Reagan-National Airport to Vietnam in May is currently the most expensive (average of $1,318). 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 May 28, 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
7.9
Good
8,423 reviews

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.8

Boarding

8.1

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
7.9
Good
8,423 reviews
Delta
7.9
Good
8,423 reviews

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.8

Boarding

8.1

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
9,751 reviews
Delta
7.9
Good
8,423 reviews

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.8

Boarding

8.1

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 Korean Air 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 2h 10m. 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 $970). Flying from Washington, D.C. Reagan-National Airport to Vietnam in May is currently the most expensive (average of $1,318). 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 May 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$985Average$1,183FlexibilityNo cancel feeOn-time69%
DeltaCheapest$1,094Average$1,275FlexibilityNo cancel feeOn-timeN/A

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