$455 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 3/4. 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

Sun, Aug 23 - Sun, Sep 27
Cathay Pacific Logo
5:45 pm - 12:20 am
DCA
-
SGN
43h 35m
2 stops
Cathay Pacific Logo
6:20 pm - 8:15 pm
SGN
-
DCA
36h 55m
2 stops
$949Cathay Pacific
Wed, Apr 15 - Thu, Apr 23
Cathay Pacific Logo
11:36 am - 12:20 am
DCA
-
SGN
25h 44m
2 stops
Cathay Pacific Logo
11:05 am - 11:59 pm
SGN
-
DCA
23h 54m
2 stops
$953Cathay Pacific
Mon, Apr 13 - Thu, May 14
Cathay Pacific Logo
7:50 pm - 12:20 am
DCA
-
SGN
41h 30m
2 stops
Cathay Pacific Logo
7:10 am - 8:35 pm
SGN
-
DCA
48h 25m
2 stops
$960Cathay Pacific
Mon, Aug 24 - Sun, Sep 6
Delta Logo
10:00 am - 9:35 pm
DCA
-
HAN
24h 35m
2 stops
Delta Logo
11:10 pm - 9:21 pm
HAN
-
DCA
33h 11m
2 stops
$961Delta
Tue, Apr 7 - Mon, Apr 20
Multiple Airlines Logo
6:41 pm - 10:15 am
DCA
-
SGN
28h 34m
2 stops
Multiple Airlines Logo
11:30 am - 8:00 pm
SGN
-
DCA
43h 30m
2 stops
$963Multiple Airlines
Mon, Apr 13 - Wed, May 6
Korean Air Logo
10:05 am - 9:35 pm
DCA
-
HAN
24h 30m
2 stops
Korean Air Logo
11:10 pm - 5:07 pm
HAN
-
DCA
28h 57m
2 stops
$966Korean Air
Sun, Apr 12 - Wed, May 6
Korean Air Logo
5:02 pm - 10:50 am
DCA
-
HAN
54h 48m
2 stops
Korean Air Logo
11:10 pm - 5:07 pm
HAN
-
DCA
28h 57m
2 stops
$972Korean Air
Wed, Apr 15 - Wed, Apr 22
Multiple Airlines Logo
9:59 am - 10:00 pm
DCA
-
SGN
49h 01m
2 stops
Multiple Airlines Logo
1:50 am - 8:00 pm
SGN
-
DCA
29h 10m
2 stops
$975Multiple Airlines
Mon, Aug 17 - Mon, Sep 28
China Airlines Logo
9:59 am - 4:20 pm
DCA
-
SGN
43h 21m
2 stops
China Airlines Logo
10:50 am - 8:00 pm
SGN
-
DCA
44h 10m
2 stops
$978China Airlines
Mon, Apr 13 - Thu, May 7
Delta Logo
9:40 am - 9:35 pm
DCA
-
HAN
24h 55m
2 stops
Delta Logo
11:10 pm - 9:45 pm
HAN
-
DCA
33h 35m
2 stops
$1,001Delta
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 $985 (return) on average. On the other hand, the most expensive months are November and June, when the average cost of round-trip tickets is $2,165 and $1,275 respectively.

Good to know

Low seasonApril
Cheapest flight$460
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Reagan Washington National Airport to Ho Chi Minh City

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 4 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 1714 reviews
7.8Entertainment
7.7Food
8.7Crew
8.2Comfort
8.4Boarding
Airline reviews

Not as good as I expected, I couldn't use the screen to watch movies or anything else because it wasn't 'STEADY' AT ALL, it moved every single time that the passenger who sat on that seat moved, that caused me fell dizzy and nauseous when I tried to use it, so I ended up with only sleeping and eating with no entertainment all my haul flight on premium economy seat, plus the passenger who sat next to me, she just loved to spread her very long hair down on my shoulder, face, arm, sometimes her hair just whacked my face till I really wanted to offer her my hairband!, super annoying 😑 and that my bad experience with that flight.

4.0 OkayAnonymous, Feb 2026
DFW - HND
Read more Japan Airlines reviews

Not as good as I expected, I couldn't use the screen to watch movies or anything else because it wasn't 'STEADY' AT ALL, it moved every single time that the passenger who sat on that seat moved, that caused me fell dizzy and nauseous when I tried to use it, so I ended up with only sleeping and eating with no entertainment all my haul flight on premium economy seat, plus the passenger who sat next to me, she just loved to spread her very long hair down on my shoulder, face, arm, sometimes her hair just whacked my face till I really wanted to offer her my hairband!, super annoying 😑 and that my bad experience with that flight.

This was serviced by American Airlines. Not as great as Japan Airlines. The LAX domestic airport is not a great airport. We needed to take a shuttle to go to the gate. Mind you, this is just a connection, but we had to go to security again, which is a hassle after a very long flight from Japan. It makes sense, for our checked baggage to be picked up and moved to the other carousel for our final destination, but for us doing the security all over again, pointless. We had our boarding passes already when we were still in Japan, yet we had to start from zero again when we arrived LAX. There should at least be a different line for connecting passengers without going out like it’s our final destination. Next time, I will try to book our flights from any foreign countries non stop to my destination.

Very comfortab flight. The flight crew and service was terrific. The food was average at best.

My plans changed and I tried to cancel or change the flight for credit but was giving the run around and denied . Not great

I wouldn’t know, I tried to contact you days before to reschedule my flight back to Okinawa but you left me on hold for 2 hours. I tried calling multiple times and not once did you pick up. I had to spend 2000 dollars on a one way ticket back to Okinawa because I couldn’t get ahold of you guys to change my flight.

I fell asleep, and the crew kindly left some snacks for me

I was so hungry , from Boston to Tokyo, only 2 big food .

The crew was nice, the food could be better, and at least 2 bathroom stalls were out of service.

Good experience for economy transpacific. Reasonable comfortable seats. Food was not as good as I expected or had on other prior transpacific flights but likely attribute that to rising cost of supplies. Staff is courteous. Overall, very good.

great experience - staff were kind and attentive and food was excellent. very comfortable flight that felt much shorter than 14 hours.

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

Flight was delayed due to crew being not on time

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

The staff was frielndly. The plane was terrible, it was too small and should be decommissioned. There were no back seat screens at all. The only beverages we had a choice from was coffee, tea or water. The only bathroom in the back was behind the flight attendant's jump seat and wasn't working. And I literally felt like I was sitting on top of the guy next to me. It was terribly hot in the plane and we had to sit on the tarmac in Chicago for 1/2 hour due to congestion in Mpls. Wouldn't they have know that before they even boarded us so that we could have sat in comfort in the terminal?

Never got on it. Was re-routed through Detroit and am still in airports 12 hours later waiting for my connecting plane to arrive.

Delta has too many delays now days. It is 1:06 am now. I was supposed to land in Norfolk at 10:30 pm. I got re-booked through Detroit and I’m still in Detroit. I hope to be landed in Norfolk by 3am. I’ve been in airports for 12 hours as of right now. There is a weather delay now but most delays lately have been maintenance.

Very bad Instead 22 hour it take me more that 35 hour to arrive from Los Angeles to Phuket and they changed my flight in Hong Kong to Shanghai china and in order to get my bag I was forced to vet china visa entrry

There could have been more options on the entertainment section Nothing was available for non English speaking passengers

I didn't have much experience with Cathay Pacific airlines because of delay and missed connections, the bulk of the trip was on Japan Airlines.

Flight delayed first from bad weather, then after boarding there was a problem with the plane. We had to get off and onto another plane...connections were missed and the trip took an additional 10 hours!! Pre-paid seatting was not honored due ro last minute carrier changes. Most of the trip was on Japan Airline.

Flight from Hong Kong to LAX was late, the plane was grubby, overcrowded and hot. I recently flew Starlux and that was a MUCH better experience.

The crew, pilots and flight attendants were all amazing. What could be better is reinforcing that seats cannot be reclined at departure and landing. I had a person seated in front of me who had her seat all the way inclined, including during take-off - after the crew asked her to seat upright. Cathay Pacific should reinforce this safety request and perhaps penalize those who don't follow it. I felt very unsafe with this person limiting my space and perhaps putting my life in danger in the "unlikely" case of an emergency.

Given the Business class airfare, the food variety and quality both were substandard. The crew was not interested to serve other choices and work hard to provide alternatives. Very disappointing food service.

Crew and food were great in-flight. We had a 2 hour delay, no communication, and just got left in a limbo. The crew arrived late and they were running checkouts on the plane (which is important, but why not doing it earlier?) Cathay did nothing to about the delay, and a lot of people missed their connection flights. I had to run and got stuck at checkpoint, which made my entire trip very unpleasant. Got to my gate 5 mins prior to them closing it.

My flight was suppose to be at 7:45pm to fly but it didnt fly out until 8:55 to dallas so then all of my other flights was late and delay ihad to wait at the airport for extra 14 hours to be able to get on a different plane

There were delays at boarding and landing. These events resulted in a tight transfer time in HK. Poor signage for transfers. Finally, lost luggage at final destination.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

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