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Cheap flights from Washington, D.C. Reagan-National Airport to Vietnam from $459

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to Vietnam departing on 1/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Vietnam

Cheap round-trip flights

Enter your travel dates to find the best prices.
Cathay Pacific Logo
6:59 pm - 6:35 pm
DCA
-
SGN
35h 36m2 stops
Cathay Pacific Logo
7:35 pm - 8:05 pm
SGN
-
DCA
35h 30m2 stops
$958Cathay Pacific
Tue, Feb 17 - Mon, Mar 9
Multiple Airlines Logo
5:01 pm - 4:50 pm
DCA
-
SGN
35h 49m2 stops
Multiple Airlines Logo
5:50 pm - 4:09 pm
SGN
-
DCA
34h 19m2 stops
$959Multiple Airlines
Tue, Feb 3 - Tue, Feb 10
China Airlines Logo
5:01 pm - 4:50 pm
DCA
-
SGN
35h 49m2 stops
China Airlines Logo
5:50 pm - 8:00 pm
SGN
-
DCA
38h 10m2 stops
$964China Airlines
Tue, Feb 3 - Tue, Feb 10
Cathay Pacific Logo
7:59 pm - 10:05 am
DCA
-
SGN
51h 06m2 stops
Cathay Pacific Logo
11:05 am - 3:49 pm
SGN
-
DCA
39h 44m2 stops
$966Cathay Pacific
Tue, Mar 31 - Tue, Apr 14
Multiple Airlines Logo
5:01 pm - 4:50 pm
DCA
-
SGN
35h 49m2 stops
Multiple Airlines Logo
5:50 pm - 4:09 pm
SGN
-
DCA
34h 19m2 stops
$968Multiple Airlines
Tue, Feb 3 - Tue, Feb 10
United Airlines Logo
6:00 am - 9:50 pm
DCA
-
SGN
27h 50m2 stops
United Airlines Logo
11:15 pm - 1:59 pm
SGN
-
DCA
25h 44m2 stops
$970United Airlines
Mon, Feb 16 - Wed, May 27
United Airlines Logo
6:00 am - 9:50 pm
DCA
-
SGN
27h 50m2 stops
United Airlines Logo
7:30 am - 7:32 pm
SGN
-
DCA
24h 02m2 stops
$973United Airlines
Thu, Jan 15 - Thu, Jan 22
EVA Air Logo
5:00 pm - 5:15 pm
DCA
-
HAN
36h 15m2 stops
EVA Air Logo
6:20 pm - 8:00 pm
HAN
-
DCA
36h 40m2 stops
$1,173EVA Air
Sun, Feb 15 - Wed, Mar 25
Delta Logo
8:40 am - 9:30 pm
DCA
-
DAD
25h 50m2 stops
Delta Logo
10:55 pm - 9:41 pm
DAD
-
DCA
33h 46m2 stops
$1,255Delta
Wed, Mar 18 - Fri, Apr 10
Delta Logo
7:00 am - 9:35 pm
DCA
-
HAN
27h 35m2 stops
Delta Logo
11:10 pm - 8:40 pm
HAN
-
DCA
32h 30m2 stops
$1,270Delta
Sat, Mar 28 - Sat, Apr 4

Cathay Pacific flights from Washington, D.C. Reagan-National Airport to Vietnam

Our best Cathay Pacific deals on Washington, D.C. Reagan-National Airport to Vietnam flight tickets
Cathay Pacific
Feb 17
DCA6:59 pmWashington, D.C. Reagan-National
35h 36m
2 stops
SGN6:35 pmHo Chi Minh City
Mar 9
SGN7:35 pmHo Chi Minh City
35h 30m
2 stops
DCA8:05 pmWashington, D.C. Reagan-National
$958
Find similar
Cathay Pacific
Mar 31
DCA7:59 pmWashington, D.C. Reagan-National
51h 06m
2 stops
SGN10:05 amHo Chi Minh City
Apr 14
SGN11:05 amHo Chi Minh City
39h 44m
2 stops
DCA3:49 pmWashington, D.C. Reagan-National
$966
Find similar
Cathay Pacific
Mar 3
DCA6:00 amWashington, D.C. Reagan-National
30h 20m
2 stops
SGN12:20 amHo Chi Minh City
May 12
SGN6:20 pmHo Chi Minh City
38h 55m
2 stops
DCA10:15 pmWashington, D.C. Reagan-National
$974
Find similar

China Airlines flights from Washington, D.C. Reagan-National Airport to Vietnam

Our best China Airlines deals on Washington, D.C. Reagan-National Airport to Vietnam flight tickets
China Airlines
Feb 3
DCA5:01 pmWashington, D.C. Reagan-National
35h 49m
2 stops
SGN4:50 pmHo Chi Minh City
Feb 10
SGN5:50 pmHo Chi Minh City
38h 10m
2 stops
DCA8:00 pmWashington, D.C. Reagan-National
$964
Find similar
China Airlines
Jan 26
DCA5:01 pmWashington, D.C. Reagan-National
28h 59m
2 stops
SGN10:00 amHo Chi Minh City
Feb 13
SGN11:00 amHo Chi Minh City
45h 05m
2 stops
DCA8:05 pmWashington, D.C. Reagan-National
$984
Find similar
China Airlines
Jan 26
DCA5:01 pmWashington, D.C. Reagan-National
35h 49m
2 stops
SGN4:50 pmHo Chi Minh City
Feb 12
SGN5:50 pmHo Chi Minh City
38h 15m
2 stops
DCA8:05 pmWashington, D.C. Reagan-National
$998
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport 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, momondo users made 832,500 searches. Data last updated December 21, 2025.
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.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Tue 2/17

6:59 pm-6:35 pm

2 stops35h 36m

Ho Chi Minh City

Mon 3/9

7:35 pm-8:05 pm

2 stops35h 30m

$958

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Tue 2/3

5:01 pm-4:50 pm

2 stops35h 49m

Ho Chi Minh City

Tue 2/10

5:50 pm-4:09 pm

2 stops34h 19m

$959

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Tue 2/3

5:01 pm-4:50 pm

2 stops35h 49m

Ho Chi Minh City

Tue 2/10

5:50 pm-8:00 pm

2 stops38h 10m

$964

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Tue 3/31

7:59 pm-10:05 am

2 stops51h 06m

Ho Chi Minh City

Tue 4/14

11:05 am-3:49 pm

2 stops39h 44m

$966

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Tue 2/3

5:01 pm-4:50 pm

2 stops35h 49m

Ho Chi Minh City

Tue 2/10

5:50 pm-4:09 pm

2 stops34h 19m

$968

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Mon 2/16

6:00 am-9:50 pm

2 stops27h 50m

Ho Chi Minh City

Wed 5/27

11:15 pm-1:59 pm

2 stops25h 44m

$970

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

Thu 1/15

6:00 am-9:50 pm

2 stops27h 50m

Ho Chi Minh City

Thu 1/22

7:30 am-7:32 pm

2 stops24h 02m

$973

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Sun 2/15

5:00 pm-5:15 pm

2 stops36h 15m

Hanoi Noibai

Wed 3/25

6:20 pm-8:00 pm

2 stops36h 40m

$1,173

Washington, D.C.Da Nang

DCA - DAD

DCADAD

Washington, D.C. Reagan-National

Wed 3/18

8:40 am-9:30 pm

2 stops25h 50m

Da Nang

Fri 4/10

10:55 pm-9:41 pm

2 stops33h 46m

$1,255

Washington, D.C.Hanoi

DCA - HAN

DCAHAN

Washington, D.C. Reagan-National

Sat 3/28

7:00 am-9:35 pm

2 stops27h 35m

Hanoi Noibai

Sat 4/4

11:10 pm-8:40 pm

2 stops32h 30m

$1,270

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Vietnam from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to Vietnam

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Vietnam?

The month of October is, on average, the cheapest month to fly to Vietnam from Washington, D.C. Reagan-National Airport, with most prices found around $985. If you don’t want to visit Vietnam in October, then you should wait until September to fly from Washington, D.C. Reagan-National Airport, when ticket prices are also cheap, with an average price of $1,035.

What is the cheapest day to depart on your flight to Vietnam?

According to our data, Monday is the cheapest day to fly to Vietnam from Washington, D.C. Reagan-National Airport. The lowest ticket price found for a Monday departure recently was $1,049. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Vietnam on Tuesday is $1,481.

What is the cheapest time of day to depart on your flight to Vietnam?

Flying to Vietnam from Washington, D.C. Reagan-National Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,088 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to Vietnam, so prices are often more expensive at around $1,242 per ticket.

Cheap Washington, D.C. Reagan-National Airport to Vietnam flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Vietnam

Fastest flight time

25h 43m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Vietnam takes 25h 43m
There are no direct flights from Washington, D.C. Reagan-National Airport to Vietnam. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Vietnam.
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  • When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Vietnam?

    Prices for flights from Washington, D.C. Reagan-National Airport to Vietnam were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Vietnam?

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Vietnam?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Vietnam.

  • What documentation or ID do you need to fly to Vietnam?

    The necessary travel and health documents for your Vietnam trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Washington, D.C. Reagan-National Airport to Vietnam

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Vietnam with momondo
Airline
Rating
Free Cancellation
Price
Cathay PacificPriceFrom $974Free CancellationRating
7.6
1,102 reviews
Search Cathay Pacific flights
United AirlinesPriceFrom $985Free CancellationRating
7.4
9,100 reviews
Search United Airlines flights
Japan AirlinesPriceFrom $1,082Free CancellationRating
8.3
1,661 reviews
Search Japan Airlines flights
DeltaPriceFrom $1,094Free CancellationRating
7.9
8,021 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Vietnam?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Vietnam for you.

Can I find flights from Washington, D.C. to Vietnam with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Vietnam from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Vietnam?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Vietnam from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to Vietnam right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Vietnam from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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