What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Vietnam one-way?

$440 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on ANA and China Airlines, with prices starting from $507 and $574, respectively.

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Vietnam (average of $910). Flying from Washington, D.C. Reagan-National Airport to Vietnam in June is currently the most expensive (average of $1,430). 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.

In terms of precipitation, rainfall in Vietnam ranges from 0.0 - 13.4 inches per month. September is typically the wettest month, when rainfall can reach 13.4 in. February is typically the driest time to visit Vietnam when rainfall is around 0.0 in.

If weather is an important factor for your trip to Vietnam, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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.

What are the most popular airlines that fly from Washington, D.C. Reagan-National Airport to Vietnam?

Before booking your flight from Washington, D.C. Reagan-National Airport to Vietnam check out the most popular airlines for this route: Cathay Pacific, Korean Air or United Airlines.

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Vietnam?

Users have found that booking a flight from Washington, D.C. Reagan-National Airport to Vietnam at least 35 days early can save you up to 34% on average compared to booking a flight this week. If booking 35 days before your flight isn’t an option for you, users have found flights from Washington, D.C. Reagan-National Airport to Vietnam for as little as $1,178 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,451 for flights departing within the next 3 days.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, April can be a great choice for travel to Vietnam. Flights to Vietnam from Washington, D.C. Reagan-National Airport in April are about $1,308 on average during April, but can be found for as low as $799.

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.

$440+ Cheap Flights from Washington, D.C. Reagan-National Airport to Vietnam

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Cheap flight deals from Reagan-National to Vietnam

Round-trip from	$832 (Korean Air)
One-way from	$440 (AloTrip)
Popular in	December
Cheapest in	April
Average price	$1,464

From Washington, D.C. Reagan-National to Vietnam

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One-way flight from Washington, D.C. Reagan-National to Vietnam

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($131 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($38 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find 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 août 14, 2025.

mar. 8/266:59 amDCA - HAN

2 stops40h 41mKorean Air

mer. 9/311:10 pmHAN - DCA

2 stops26h 57mKorean Air

Deal found 8/13

$832

mar. 9/28:35 amDCA - HAN

2 stops26h 00mKorean Air

mer. 9/1711:10 pmHAN - DCA

2 stops26h 47mKorean Air

Deal found 8/14

$856

jeu. 9/48:35 amDCA - HAN

2 stops26h 00mKorean Air

mer. 9/1711:10 pmHAN - DCA

2 stops26h 47mKorean Air

Deal found 8/14

$878

mar. 8/266:59 amDCA - HAN

2 stops27h 36mKorean Air

mar. 9/211:10 pmHAN - DCA

2 stops32h 37mKorean Air

Deal found 8/13

$882

jeu. 9/46:45 amDCA - HAN

2 stops28h 05mAmerican Airlines

mer. 9/1711:20 pmHAN - DCA

2 stops34h 49mAmerican Airlines

Deal found 8/14

$887

mar. 8/268:35 amDCA - HAN

2 stops26h 00mKorean Air

jeu. 9/411:10 pmHAN - DCA

2 stops26h 57mKorean Air

Deal found 8/13

$906

mar. 10/288:30 amDCA - SGN

2 stops28h 45mANA

mer. 11/1211:05 pmSGN - DCA

2 stops24h 53mANA

Deal found 8/12

$936

mer. 8/278:59 amDCA - SGN

2 stops44h 21mChina Airlines

jeu. 9/45:30 pmSGN - DCA

2 stops62h 29mChina Airlines

Deal found 8/14

$945

lun. 10/63:30 pmDCA - SGN

2 stops43h 25mANA

lun. 10/2011:15 pmSGN - DCA

2 stops26h 01mANA

Deal found 8/14

$952

ven. 8/298:35 amDCA - HAN

2 stops26h 00mKorean Air

jeu. 9/411:10 pmHAN - DCA

2 stops26h 57mKorean Air

Deal found 8/13

$956

mer. 9/176:45 amDCA - SGN

2 stops28h 00mAmerican Airlines

mer. 9/248:00 amSGN - DCA

2 stops28h 00mAmerican Airlines

Deal found 8/13

$957

mer. 8/279:40 amDCA - SGN

2 stops25h 25mDelta

mar. 9/211:45 pmSGN - DCA

2 stops33h 03mDelta

Deal found 8/13

$958

Best flights from Reagan-National to Vietnam
Discover carefully curated flight deals from Reagan-National to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated août 14, 2025.

mer. 9/36:05 amDCA - HAN

2 stops28h 30mKorean Air

lun. 9/2211:10 pmHAN - DCA

2 stops26h 53mKorean Air

Deal found 8/12

$832

mar. 10/288:30 amDCA - SGN

2 stops28h 45mANA

mer. 11/1211:05 pmSGN - DCA

2 stops24h 53mANA

Deal found 8/12

$936

mer. 8/278:59 amDCA - SGN

2 stops37h 41mChina Airlines

mer. 9/35:30 pmSGN - DCA

2 stops38h 29mChina Airlines

Deal found 8/13

$945

lun. 9/296:45 amDCA - SGN

2 stops28h 00mAmerican Airlines

lun. 10/277:50 amSGN - DCA

2 stops26h 10mAmerican Airlines

Deal found 8/11

$957

mer. 8/279:40 amDCA - SGN

2 stops25h 25mDelta

mar. 9/211:45 pmSGN - DCA

2 stops33h 03mDelta

Deal found 8/13

$958

dim. 9/283:30 pmDCA - DAD

2 stops58h 10mMultiple Airlines

dim. 10/512:55 pmDAD - DCA

2 stops43h 19mMultiple Airlines

Deal found 8/13

$1,251

mar. 9/26:05 amDCA - HAN

2 stops28h 30mKorean Air

lun. 9/2211:10 pmHAN - DCA

2 stops26h 53mKorean Air

Deal found 8/12

$832

mar. 9/28:35 amDCA - HAN

2 stops26h 00mKorean Air

mar. 9/2311:10 pmHAN - DCA

2 stops26h 53mKorean Air

Deal found 8/12

$832

mer. 9/38:59 amDCA - SGN

2 stops37h 41mChina Airlines

ven. 9/125:30 pmSGN - DCA

2 stops38h 29mChina Airlines

Deal found 8/13

$945

lun. 10/63:30 pmDCA - SGN

2 stops43h 25mANA

lun. 10/2011:15 pmSGN - DCA

2 stops26h 01mANA

Deal found 8/14

$952

mer. 9/176:45 amDCA - SGN

2 stops28h 00mAmerican Airlines

mer. 9/248:00 amSGN - DCA

2 stops28h 00mAmerican Airlines

Deal found 8/13

$957

jeu. 9/48:35 amDCA - HAN

2 stops26h 00mKorean Air

lun. 9/2211:10 pmHAN - DCA

2 stops26h 53mKorean Air

Deal found 8/12

$832

Last-minute flights from Reagan-National to Vietnam
Discover last-minute flight deals from Reagan-National to Vietnam. Data last updated août 14, 2025 and is based on user searches.

mar. 8/1912:35 pmDCA - SGN

2 stops34h 30mCathay Pacific

sam. 8/301:45 pmSGN - DCA

2 stops41h 31mCathay Pacific

Deal found 8/12

$4,694

mar. 8/197:31 pmDCA - SGN

2 stops27h 34mMultiple Airlines

sam. 8/306:20 pmSGN - DCA

2 stops34h 39mMultiple Airlines

Deal found 8/13

$4,966

ven. 8/2210:09 pmDCA - SGN

2 stops48h 56mCathay Pacific

dim. 8/316:20 pmSGN - DCA

2 stops56h 51mCathay Pacific

Deal found 8/12

$1,065

ven. 8/226:59 pmDCA - SGN

2 stops27h 56mEVA Air

sam. 8/301:50 amSGN - DCA

2 stops27h 09mEVA Air

Deal found 8/12

$1,118

ven. 8/228:59 amDCA - SGN

2 stops44h 21mChina Airlines

dim. 8/315:30 pmSGN - DCA

2 stops35h 29mChina Airlines

Deal found 8/13

$1,222

ven. 8/228:59 amDCA - SGN

3 stops42h 41mSingapore Airlines

dim. 8/3112:20 pmSGN - DCA

2 stops43h 39mSingapore Airlines

Deal found 8/12

$2,341

dim. 8/246:59 pmDCA - SGN

2 stops28h 06mMultiple Airlines

mer. 9/36:20 pmSGN - DCA

2 stops34h 39mMultiple Airlines

Deal found 8/13

$984

dim. 8/246:59 pmDCA - SGN

2 stops29h 41mEVA Air

mar. 9/21:50 amSGN - DCA

2 stops51h 09mEVA Air

Deal found 8/13

$1,082

dim. 8/247:59 pmDCA - HAN

2 stops39h 16mUnited Airlines

dim. 8/3111:35 pmHAN - DCA

2 stops44h 23mUnited Airlines

Deal found 8/11

$1,215

dim. 8/248:59 amDCA - SGN

3 stops38h 56mSingapore Airlines

mer. 9/33:55 pmSGN - DCA

2 stops40h 04mSingapore Airlines

Deal found 8/13

$1,292

dim. 8/247:38 pmDCA - HAN

2 stops38h 57mMultiple Airlines

sam. 8/301:00 amHAN - DCA

2 stops30h 59mMultiple Airlines

Deal found 8/11

$1,613

dim. 8/248:59 amDCA - HAN

3 stops39h 31mSingapore Airlines

dim. 8/3112:40 pmHAN - DCA

2 stops43h 19mSingapore Airlines

Deal found 8/11

$2,043

One-way flights from Reagan-National to Vietnam
Search for one-way flight options from Reagan-National to Vietnam. Find affordable one-way fares based on user searches. Data last updated août 14, 2025.

mar. 9/168:25 amDCA - HAN

2 stops26h 10mKorean Air

Deal found 8/14

$440

jeu. 9/188:25 amDCA - HAN

2 stops26h 10mKorean Air

Deal found 8/14

$446

mer. 8/208:59 amDCA - SGN

2 stops37h 41mMultiple Airlines

Deal found 8/12

$483

mer. 9/38:59 amDCA - SGN

2 stops44h 21mMultiple Airlines

Deal found 8/14

$486

lun. 11/107:30 amDCA - HAN

2 stops27h 35mANA

Deal found 8/14

$507

sam. 8/231:00 pmDCA - SGN

3 stops46h 45mMultiple Airlines

Deal found 8/12

$507

mar. 10/286:00 pmDCA - HAN

3 stops41h 00mMultiple Airlines

Deal found 8/14

$510

ven. 9/268:25 amDCA - HAN

2 stops26h 10mKorean Air

Deal found 8/13

$511

mer. 10/291:00 pmDCA - SGN

3 stops59h 25mMultiple Airlines

Deal found 8/14

$512

mar. 9/25:06 pmDCA - SGN

2 stops36h 14mChina Airlines

Deal found 8/14

$514

mar. 10/216:35 amDCA - SGN

2 stops28h 25mAmerican Airlines

Deal found 8/14

$515

mar. 8/268:00 amDCA - SGN

2 stops45h 20mChina Airlines

Deal found 8/12

$519

Cheapflights Fare Finder

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

mer. 9/3

6:05 am-9:35 pm

2 stops28h 30m

Hanoi Noibai

lun. 9/22

11:10 pm-3:03 pm

2 stops26h 53m

$832

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

mar. 9/2

6:05 am-9:35 pm

2 stops28h 30m

Hanoi Noibai

lun. 9/22

11:10 pm-3:03 pm

2 stops26h 53m

$832

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

mar. 9/2

8:35 am-9:35 pm

2 stops26h 00m

Hanoi Noibai

mar. 9/23

11:10 pm-3:03 pm

2 stops26h 53m

$832

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

jeu. 9/4

8:35 am-9:35 pm

2 stops26h 00m

Hanoi Noibai

lun. 9/22

11:10 pm-3:03 pm

2 stops26h 53m

$832

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

jeu. 8/28

6:05 am-9:35 pm

2 stops28h 30m

Hanoi Noibai

mer. 9/3

11:10 pm-3:07 pm

2 stops26h 57m

$832

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

mar. 8/26

6:59 am-10:40 am

2 stops40h 41m

Hanoi Noibai

mer. 9/3

11:10 pm-3:07 pm

2 stops26h 57m

$832

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

mar. 9/2

8:35 am-9:35 pm

2 stops26h 00m

Hanoi Noibai

mer. 9/17

11:10 pm-3:03 pm

2 stops26h 53m

$832

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

mer. 8/27

8:35 am-9:35 pm

2 stops26h 00m

Hanoi Noibai

mer. 9/3

11:10 pm-3:07 pm

2 stops26h 57m

$832

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

mar. 9/2

8:35 am-9:35 pm

2 stops26h 00m

Hanoi Noibai

mer. 9/24

11:10 pm-3:03 pm

2 stops26h 53m

$832

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

jeu. 9/4

8:35 am-9:35 pm

2 stops26h 00m

Hanoi Noibai

mar. 9/23

11:10 pm-3:03 pm

2 stops26h 53m

$832

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 59 results

...

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 time of day to fly from DCA to VN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to Vietnam as you normally would.

Reviews of airlines servicing Vietnam

Get a feel of what it's like to fly with Korean Air, Cathay Pacific, 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.

Korean Air

8.4

Very good

1,131 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Korean Air

8.4

Very good

1,131 reviews

Korean Air

8.4

Very good

1,131 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Cathay Pacific

7.6

Good

968 reviews

Korean Air

8.4

Very good

1,131 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

United Airlines

7.4

Good

8,916 reviews

Korean Air

8.4

Very good

1,131 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Related info for your journey

What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Vietnam one-way?
$440 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on ANA and China Airlines, with prices starting from $507 and $574, respectively.
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, August is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Vietnam (average of $910). Flying from Washington, D.C. Reagan-National Airport to Vietnam in June is currently the most expensive (average of $1,430). 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

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Alternative routes for Reagan-National to Vietnam

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Baltimore to Ho Chi Minh City flights

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Reagan-National to Hongqiao Intl flights

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Dulles Intl to Gimpo Intl flights

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Reagan-National to Chennai flights

Dulles Intl to Hong Kong flights

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Dulles Intl to Pu Dong flights

Top 3 airlines flying from Reagan-National to Vietnam

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$893	Average$1,988	FlexibilityNo cancel fee	On-time69%
Cathay Pacific	Cheapest$1,088	Average$1,198	FlexibilityNo cancel fee	On-time72%
Korean Air	Cheapest$1,447	Average$1,604	FlexibilityNo cancel fee	On-time81%

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$440+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap 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 août 14, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Reagan-National to Vietnam

Cheapest flights from Reagan-National to VietnamExplore 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 août 14, 2025.

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 août 14, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Vietnam that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Vietnam

What is the cheapest time of day to fly from DCA to VN?

Find hourly flight availability from Reagan-National to Vietnam. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated août 14, 2025.

Reviews of airlines servicing Vietnam

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.

What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Vietnam one-way?

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

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

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

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

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

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.

Alternative routes for Reagan-National to Vietnam

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Reagan-National to Vietnam

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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 août 14, 2025.