$429 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 11/18. 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

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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, Feb 3 - Tue, Feb 24
Singapore Airlines Logo
9:59 am - 3:00 pmDCA-SGN
41h 01m2 stops
Singapore Airlines Logo
12:15 pm - 8:55 pmSGN-DCA
44h 40m2 stops
$882Singapore Airlines
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Tue, Jan 20 - Wed, Feb 4
Singapore Airlines Logo
9:59 am - 6:40 pmDCA-SGN
44h 41m2 stops
Singapore Airlines Logo
4:15 pm - 8:00 pmSGN-DCA
39h 45m2 stops
$883Singapore Airlines
Find Deal
Tue, Jan 20 - Wed, Feb 4
Singapore Airlines Logo
9:59 am - 3:00 pmDCA-SGN
41h 01m2 stops
Singapore Airlines Logo
4:15 pm - 8:00 pmSGN-DCA
39h 45m2 stops
$896Singapore Airlines
Find Deal
Mon, Jan 5 - Mon, Feb 2
China Airlines Logo
5:00 pm - 4:50 pmDCA-SGN
35h 50m2 stops
China Airlines Logo
5:50 pm - 4:09 pmSGN-DCA
34h 19m2 stops
$929China Airlines
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Mon, Jan 12 - Tue, Jan 27
China Airlines Logo
5:01 pm - 4:50 pmDCA-SGN
35h 49m2 stops
China Airlines Logo
11:00 am - 9:59 pmSGN-DCA
46h 59m2 stops
$945China Airlines
Find Deal
Thu, Jan 1 - Mon, Jan 19
United Airlines Logo
7:00 am - 9:50 pmDCA-SGN
26h 50m2 stops
United Airlines Logo
11:05 pm - 8:59 pmSGN-DCA
33h 54m2 stops
$970United Airlines
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Wed, Dec 31 - Thu, Jan 15
United Airlines Logo
7:30 am - 9:50 pmDCA-SGN
50h 20m2 stops
United Airlines Logo
7:30 am - 9:52 pmSGN-DCA
26h 22m2 stops
$973United Airlines
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Wed, Nov 12 - Wed, Nov 19
Cathay Pacific Logo
9:45 am - 10:05 amDCA-HAN
36h 20m2 stops
Cathay Pacific Logo
7:30 pm - 12:01 amHAN-DCA
40h 31m2 stops
$1,043Cathay Pacific
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Fri, Nov 14 - Tue, Nov 25
Cathay Pacific Logo
6:38 pm - 10:05 amDCA-HAN
27h 27m2 stops
Cathay Pacific Logo
11:05 am - 12:01 amHAN-DCA
48h 56m2 stops
$1,093Cathay Pacific
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Mon, Dec 1 - Mon, Dec 22
Japan Airlines Logo
5:45 pm - 10:30 pmDCA-HAN
40h 45m2 stops
Japan Airlines Logo
11:55 pm - 6:57 pmHAN-DCA
31h 02m2 stops
$1,149Japan Airlines
Find Deal
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 September, when tickets cost $1,035 (return) on average. On the other hand, the most expensive months are June and November, when the average cost of round-trip tickets is $2,209 and $2,168 respectively.

Good to know

Low seasonApril
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 5% 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.

  • What is the cheapest time of day to fly to Vietnam?

    The cheapest time of day to fly to Vietnam is generally in the morning, when round-trip flights cost $1,088 on average. Morning departures are around 12% cheaper than evening flights, on average. The most expensive time of day to fly to Vietnam is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,242.

Reviews of the top 3 airlines serving 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.
8.3
Japan AirlinesOverall score based on 1578 reviews
7.8Entertainment
7.7Food
8.4Boarding
8.2Comfort
8.7Crew
Airline reviews

Terrible. Our flight was delayed by 15 hours. We lost a full day of our vacation.

2.0 MediocreJeremy, Oct 2025LAX - HND
Read more Japan Airlines reviews

Terrible. Our flight was delayed by 15 hours. We lost a full day of our vacation.

Not good. The flight from LAX to Tokyo was delayed 15 hours.

highly recommend for trip to japan only reason why i gave good not excellent is because their selection of movies and tv shows in English is more limited .

I avoid American Airlines for a reason. Our flight was delayed at LAX. The situation at the gate was chaotic. The woman making announcements wasn't being clear or transparent regarding why there were delays. There was a lot of confusion regarding flight and gate status. Other passengers were pretty rude. I was elbowed in the eye by someone who was in a hurry to get their bags from the overhead bin immediately after the flight landed. Ultimately, I will avoid AA as much as possible in the future.

Overall a great experience. One complain was the vegetarian food that my wife had which was mostly boiled vegetables with not much flavor.

We booked business class round trip from Delhi to San Diego and back. On our last leg from Bangalore to Delhi we were down graded to economy class which was big disappointment other than that everything was great.

Had an incident with a stewardess who insisted that I take a seat. I informed her that I came to use the restroom and to have some water. After using the restroom, I wanted to stretch my legs out a little cuz my knees were aching from sitting. I understood her concern for my concern and the potential turbulence (she said she knows this route and the turbulence and safety is not to be taken lightly) but I felt that her mood, tone, demeanor, and a lack of compassion for the pain in my knees were not the proper way to address a customer or anyone for that matter. This left a bitter taste in my mouth. It was her lack of professionalism that surprised me.

It was good but need mor amenities for toiletries and entertainment

This portion of the trip from HCMC to Dallas was operated by American Airline. Unfortunately they are 2 steps below JAL in overall quality. Regardless, AAStill got me where I needed to go on time.

First experience with JAL so was okay to pretty good. 10 hour flight in premium select seat. . Seats in that category should be better than pretty good. Seat pan a little short for tall people but plenty of leg room; I think JAL in process of new planes? Also, — they could have offered a bit more water throughout flight and meals not the greatest. That said, certainly 200 percent better than a very recent AK Air International flight in similar cabin class in comfort and meals.

Seats in the absolute back row of the plane even though we booked ages ago :( Crew was awesome though

Great entertainment system, the seat is a bit old style needs refurbishment

I am Vegetarian also has Gluten free food. However they gave me chicken and fish which is gluten free, but i am a vegetrain and i requested crew Hindu meal vegetarian, they said they will come back. .but they never showed up even i asked 2nd time. They could have compensate. I also request airline industry to have another option Gluten Free for Vegetarin people as well. Because Vegetarin people will have gluen issue...

I was only given 2 meals, and my screen showed that there were 3 meals. Second meal was 1-2 hours late according to the screen.

I've stomach problems after 2 hours of flight, Iris, the flight purser not only did her best to make me feel comfortable, she went above and beyond providing pain relievers medicines and ointment. She look and found a doctor passenger on the flight to provide advise. She even report on ground staffs about my condition and provide wheelchair upon arrival. Kudos to her and Cathay Pacific!

very professional and very attentive to my Special Needs as I required a Wheel Chair and assistance to board

Everything was fine and I have no complaints or things to note.

The economy seats are much indeed roomier. Meals needs improvement.

flight delayed 45 mins - missed connection - 1 hr layover became 8 hr layover waiting for next flight -

Fast boarding flight on time boarded plane back to front instead of stupid zone groups like US airlines do...

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

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

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