$579 Find Cheap Flights from Reagan Washington National Airport to Vietnam

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Reagan-National to Vietnam departing on 11/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Book Cheap Reagan-National to Vietnam Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Reagan-National to Vietnam that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Reagan-National to Vietnam

Tue, Oct 6 - Thu, Oct 22
Multiple Airlines Logo
9:30 am - 10:55 am
DCA
-
SGN
38h 25m
2 stops
Multiple Airlines Logo
12:20 pm - 8:00 pm
SGN
-
DCA
42h 40m
2 stops
$1,101Multiple Airlines
Wed, Oct 14 - Wed, Oct 28
Multiple Airlines Logo
9:30 am - 2:35 pm
DCA
-
SGN
42h 05m
2 stops
Multiple Airlines Logo
4:15 pm - 8:00 pm
SGN
-
DCA
38h 45m
2 stops
$1,125Multiple Airlines
Fri, Aug 28 - Tue, Sep 15
Delta Logo
6:59 am - 9:35 pm
DCA
-
HAN
27h 36m
2 stops
Delta Logo
12:05 pm - 11:52 pm
HAN
-
DCA
22h 47m
2 stops
$1,301Delta
Fri, Oct 23 - Wed, Nov 11
Korean Air Logo
8:20 am - 9:35 pm
DCA
-
HAN
26h 15m
2 stops
Korean Air Logo
11:05 pm - 6:05 pm
HAN
-
DCA
31h 00m
2 stops
$1,306Korean Air
Sat, Nov 7 - Tue, Nov 17
Delta Logo
12:05 pm - 9:45 pm
DCA
-
HAN
45h 40m
2 stops
Delta Logo
11:05 pm - 11:18 pm
HAN
-
DCA
36h 13m
2 stops
$1,307Delta
Thu, Oct 29 - Mon, Dec 7
ANA Logo
9:30 am - 11:05 pm
DCA
-
HAN
26h 35m
2 stops
ANA Logo
12:25 am - 6:52 pm
HAN
-
DCA
30h 27m
2 stops
$1,308ANA
Fri, Oct 30 - Tue, Dec 8
United Airlines Logo
9:30 am - 11:05 pm
DCA
-
HAN
26h 35m
2 stops
United Airlines Logo
12:25 am - 6:52 pm
HAN
-
DCA
30h 27m
2 stops
$1,311United Airlines
Sat, Nov 7 - Mon, Nov 16
Korean Air Logo
7:30 pm - 9:45 pm
DCA
-
HAN
38h 15m
2 stops
Korean Air Logo
11:05 pm - 1:25 pm
HAN
-
DCA
26h 20m
2 stops
$1,313Korean Air
Sun, Nov 8 - Thu, Nov 19
United Airlines Logo
11:00 am - 11:05 pm
DCA
-
HAN
48h 05m
2 stops
United Airlines Logo
12:25 am - 7:33 pm
HAN
-
DCA
31h 08m
2 stops
$1,317United Airlines
Sat, Oct 31 - Mon, Dec 7
ANA Logo
8:30 am - 1:20 pm
DCA
-
DAD
41h 50m
2 stops
ANA Logo
12:30 am - 6:52 pm
DAD
-
DCA
30h 22m
2 stops
$1,413ANA
Booking Insights

KAYAK's insights & trends for Reagan-National to Vietnam flights

Get data-powered insights and trends into flights from Reagan-National to Vietnam to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Reagan-National Airport to Vietnam, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Reagan-National Airport to Vietnam is October, when tickets cost $970 (return) on average. On the other hand, the most expensive months are May and July, when the average cost of round-trip tickets is $1,318 and $1,272 respectively.

Good to know

Low seasonMay
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 1% increase in price.

FAQs - booking Vietnam flights

  • How does KAYAK find such low prices on flights from Reagan Washington National Airport to Vietnam?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Reagan Washington National Airport to Vietnam.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Reagan Washington National Airport to Vietnam?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Reagan Washington National Airport to Vietnam is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Reagan Washington National Airport to Vietnam?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Reagan Washington National Airport to Vietnam with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Reagan Washington National Airport to Vietnam?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Reagan Washington National Airport to Vietnam up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Reagan-National to Vietnam

 
Need help choosing which airline to fly with from Reagan-National to Vietnam? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8412 reviews
7.2Food
7.8Entertainment
8.1Boarding
7.8Comfort
8.5Crew
Airline reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

6.0 GoodAnonymous, May 2026
ATL - ECP
Read more Delta reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

The crew were efficient. The pilots seemed professional. It was a bit chilly in our seats. The sheet provided weren’t very helpful.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

Planes were clean, no water or snacks on either flight.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Everything you need to know for your flight from Reagan-National to Vietnam

Information on your arrival and departure airports