Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

DCA - BKK

$600 Find cheap flights from Reagan Washington National Airport to Bangkok

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 Bangkok departing on 8/22. 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
0 bags
Fri 5/31
Fri 6/7

Search hundreds of travel sites at once for deals on flights to Bangkok

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Bangkok.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Bangkok.
In the last 7 days travelers have searched 43,740,974 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Reagan-National to Bangkok (DCA-BKK)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Reagan-National to Bangkok 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 and deals for you by selecting your travel dates.
Choose your dates
11:30 am - 11:50 pmDCA-BKK
25h 20m2 stops
6:30 am - 9:14 pmBKK-DCA
25h 44m2 stops
$1,043Cathay Pacific
Find Deal
Mon, Sep 9 - Tue, Sep 17
1:05 pm - 11:50 pmDCA-BKK
23h 45m2 stops
6:30 am - 9:14 pmBKK-DCA
25h 44m2 stops
$1,079Cathay Pacific
Find Deal
Thu, Sep 5 - Tue, Sep 10
3:30 pm - 6:10 amDCA-BKK
27h 40m2 stops
8:00 pm - 7:09 pmBKK-DCA
34h 09m2 stops
$1,372American Airlines
Find Deal
Mon, May 13 - Sun, May 26
4:33 pm - 6:10 amDCA-BKK
26h 37m2 stops
2:10 am - 7:15 pmBKK-DCA
29h 05m2 stops
$1,380American Airlines
Find Deal
Thu, Oct 24 - Sun, Nov 17
8:30 pm - 1:20 pmDCA-BKK
29h 50m2 stops
9:40 pm - 9:40 pmBKK-DCA
35h 00m2 stops
$1,486Korean Air
Find Deal
Mon, Aug 5 - Tue, Aug 20
9:00 am - 11:35 pmDCA-BKK
27h 35m2 stops
11:30 pm - 6:19 pmBKK-DCA
29h 49m2 stops
$1,514Delta
Find Deal
Tue, Aug 13 - Mon, Aug 26
9:00 am - 9:45 pmDCA-BKK
25h 45m2 stops
1:00 am - 11:11 pmBKK-DCA
33h 11m2 stops
$1,520Korean Air
Find Deal
Thu, Oct 24 - Sat, Nov 2
8:30 am - 11:55 pmDCA-BKK
28h 25m2 stops
7:00 am - 7:02 pmBKK-DCA
47h 02m3 stops
$1,567United Airlines
Find Deal
Wed, Jul 31 - Sat, Aug 31
9:00 am - 9:45 pmDCA-BKK
25h 45m2 stops
9:40 pm - 6:19 pmBKK-DCA
31h 39m2 stops
$1,628Delta
Find Deal
Thu, Aug 8 - Sat, Aug 24
3:00 pm - 4:35 amDCA-BKK
50h 35m2 stops
7:00 am - 7:02 pmBKK-DCA
47h 02m3 stops
$1,732United Airlines
Find Deal
Sat, Jul 20 - Mon, Aug 19

Flights from Reagan-National to Bangkok - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from Reagan Washington National Airport to Bangkok?

The average price of all flights from Washington, D.C. Reagan-National Airport to Bangkok Suvarnabhumi Airport clicked on KAYAK for each day over the last 12 months.
For Reagan Washington National Airport to Bangkok, Thursday is the cheapest day to fly on average and Friday is the most expensive. Flying from Bangkok back to Reagan Washington National Airport, the best deals are generally found on Monday, with Thursday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. Reagan-National Airport to Bangkok Suvarnabhumi Airport, 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 Bangkok Suvarnabhumi Airport is September, where tickets cost $1,183 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $1,758 and $1,717 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Washington, D.C. Reagan-National Airport to Bangkok Suvarnabhumi Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Washington, D.C. Reagan-National Airport to Bangkok Suvarnabhumi Airport, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 88 days before departure.

Which airlines provide the cheapest flights from Reagan Washington National Airport to Bangkok?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Reagan Washington National Airport to Bangkok found on KAYAK was with Cathay Pacific for $600. Cathay Pacific proposed a round-trip connection from $1,043 and Qatar Airways from $1,269.

Good to know

Low season

September

High season

July

Cheapest flight

$600
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 21% increase in price.
Flight from Reagan Washington National Airport to Bangkok

When to book flights from Reagan-National to Bangkok

Are your dates flexible? Find out the best times to travel from Reagan-National to Bangkok based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Reagan Washington National Airport to Bangkok flights

  • What is the cheapest flight from Washington, D.C. Reagan-National Airport to Bangkok Suvarnabhumi Airport?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Reagan-National Airport to Bangkok Suvarnabhumi Airport was $600 for a one-way ticket and $1,043 for a round-trip.

  • Do I need a passport to fly between Reagan Washington National Airport and Bangkok?

    A passport is required to fly from Reagan Washington National Airport to Bangkok.

  • Which airports will I be using when flying from Reagan Washington National Airport to Bangkok?

    Reagan Washington National Airport and Bangkok are both served by 1 main airport. You will leave Reagan Washington National Airport from Washington, D.C. Reagan-National and will be arriving at Bangkok Suvarnabhumi.

  • Which aircraft models fly most regularly from Reagan Washington National Airport to Bangkok?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Reagan Washington National Airport to Bangkok?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Reagan Washington National Airport and Bangkok, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Bangkok, Korean Air or ANA?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Bangkok are Korean Air and ANA. With an average price for the route of $1,309 and an overall rating of 8.5, Korean Air is the most popular choice. ANA is also a great choice for the route, with an average price of $1,340 and an overall rating of 8.4.

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

    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 Bangkok.

  • 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 Bangkok?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok from Reagan Washington National Airport 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 Bangkok?

    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 to Bangkok with an airline and back to Reagan Washington National Airport with another airline. Booking your flights between Reagan Washington National Airport and BKK can sometimes prove cheaper using this method.

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

    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 to Bangkok from Reagan Washington National Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Reagan-National to Bangkok

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Bangkok. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Reagan-National to Bangkok? 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.
8.5
Korean AirOverall score based on 1185 reviews
8.8Crew
8.6Boarding
8.2Food
8.3Comfort
8.2Entertainment
Airline reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

10.0 ExcellentAnonymous, Apr 2024IAD - ICN
Read more about Korean Air reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

Great crew, decent food Charging plugs were broken on both seats next to me. Only the USB port was available, and that charges, very, very slowly. Seat was also broken, it would not lock into position when reclining.

Korean Air had great service and the Bibimbap dish was the best airplane food I’ve ever had. It was a long flight so in between the two meals they served customers could get Shin ramen. The flight attendants let my children use a pair of nice headphones for the flight and had earbuds and slippers for all the adults. The flight was long but the time passed by relatively quickly because they have many great shows in their entertainment TV. I watched the BTS Love Yourself and Speak Yourself concerts 💜

not too bad but not too great either. Service on all airlines declined ever since covid. Your Delta Stewardess are not that friendly at all. :-(

You did not put me on a Korean Air flight! so I do not have nothing to say

My flight was diverted to Atlanta and I was not given enough time. I paid my travel on April 23, 2023. It was originally Delta from Norfolk to NY, then Korean Air from NY all the way Philippines which is my final stop. Instead from Atlanta to Korea I flew Delta which is okay. Then Korea to Philippines, I flew Asiana Airlines. What I did not like, Ieagle did not sent me an email that my flight was change and so when I went to check in Wednesday the 10th, at 4:30 a.m they told me my flight was delayed at 6;00 p.m and diverted in Atlanta and I am flying Asiana from Korea to Philippines. I do not appreciate that Kayak or Ieagle chenge our flights 5 times and then last minute change again during my day of flight. I hope that you will not make any changes of my flight o Feb 15th because it has to be the same flight with my husband. That is the reason why we made the arrangements early on.

Wonderful cabin crew!!!!! Food was poor, in flight entertainment was just ok. They need to serve more water on a 15 hour flight--we were dehydrated and kept asking for water.

Going through security a third time to get on the next flight was again utterly ridiculous and unnecessary. We were in a International secure area once again and as far as I'm concerned should not have been put through the gears for absolutely no reason. The United States can get all the information they need from the travel itinerary, there was no need to be forced out of a secure area to personally interview everyone on a connecting flight to find out their US immigration status.

Flight arrived early, fantastic, since it is short flight, no food being served

Always fly with Korean Airlines. Best service great food. Nice and clean as always.

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Big plane, long flight, absolutely no leg room and basically non existent air! I am 5”4’ and always travel Main Cabin, I was miserable on this plane and could barely move when we arrived in Cabo due to the cramped leg area!

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

Food was terrible Not many options Stewards dont care Delay

The ride was good but no food ot entertainment hence, it was just over an hour flight.

they made me check my carryon. There was space in the overhead bins.

The plane was delayed 2 hours. The wifi did not work. The seat in first class was not comfortable because the bottom felt like it lost all of its padding. And I did not like when the flight attendant made me wait at my seat to use the bathroom and didn't tell me why. If there were too many people using the 1st Class bathroom, she should have told me to go in the back, coach bathrooms. I guess I have to feel fortunate that they found 2 local pilots to still fly the plane tonight after the original pilots ended up at an airport 60 miles away due to high winds.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Every experience was good except for the lack of comfort in those economy seats. I never had knee pain until that flight. Those seats are uncomfortable.

I bought internet for the flight. Don’t waste your money. I wasn’t able to download a 1 Mb file from Google Docs during a 3-4 hr period. You can only use WhatsApp and email if you are willing to wait.

Just a crappy airline. The same every time. You feel you are a cow on a farm. You are being being whipped and pulled.

Wasn’t very crowded. Seamless processes. No issues traveling with two little kids.

Kayak, the site I went through to book our flight, sent very unclear emails about flight changes. Kayak was incredibly unhelpful in their communications with me about this, promising to work on resolving the issue, and failing to do so. As a result, I needed to get a hotel in Brussels and am now in the process of trying to get reimbursed. On the other hand, the flight personnel in Brussels were very helpful, taking time to look into the issue and determine if they could help. I am very grateful for them and have no problems with the airline. For Kayak, however, I will never use it again and will never recommend it to anyone, and will even discourage people who consider going through that site. My worst experience ever....

Overall the flights pretty good. The snacks we’re good and they were plenty of them. Both boarding and deplaning went quickly.

Delayed abs delayed Gate crew giving poor info - we are definitely leaving at —- Ultimately to cancel flight after 4+ hours of delays Just cancel it earlier

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

Lots of weather delays that were poorly communicated and managed. I get there are weather delays but they didn’t make it clear what was happening or comfortable on the plane

Everything was on time; the flight attendants and the gate personnel were very pleasant and helpful.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Perfect flight. On time departure and early arrival. Smooth flight.

Awful! The flight was delayed and we sat on the plane in DCA for an hour because fuel was out in the wrong part of the plane and would not be accessible during flight. So the plane had to be refueled in correct tank. They also allowed someone to get off of the plane. This delayed my six hour flight by an hour and made me miss my connecting flight. I ran to new gate and American Airlines agents new about the delay and even knew that I was trying to make the connection. They knew thru communication with my friend while in flight that I was in the airport and running to the new gate and they still closed the gate and refused to let me on the new flight despite plane still being at the gate. It was horrible and I had to be rebooked on a flight for 24 hours later. This has been a nightmare and if American Airlines can cause customers to be delayed and then have zero empathy as having an on time flight was more important to them than helping a customer who was delayed by no fault of her own, then it's seems that it's not a company that I want to continue to give my loyalty to. I'm so disgusted.

Help was available but timing was bad in my case

It was a horrible snow storm, but updates were inconsistent and the app never displayed a remotely accurate time or gate until very close to boarding.

I had written all my complaints on my trip from Grand Junction to Denver so I will repeat it here! I was absolutely appalled that I had to pay for a regular seat that I choose 24 hrs before boarding! Also I checked my large bag which I had to pay for as well, and by the time I boarded all the room in the bins were gone so also had to check that one. I noticed people pulling out oversized suitcases, bigger than the measurements stated for carry on, and also large pack packs stuffed full! So these people were taking up 2 or 3 spaces that the rest of us should have been able to use but couldn’t! NoTV on the flight! Thankfully I had downloaded the United Airlines app and was able to watch movies on my phone. Don’t remember the last time I flew in a plane with no movie screens!

I was appalled to have to pay for just a regular seat when I went to book 24 hrs before my flight! Because it was only an hour flight I didn’t choose a seat from Grand Junction to Denver, but I did for Toronto and had to pay just to choose a regular available seat! In my 60+ years of flying this was the first time I have heard of this. Also, allowing people to bring on “huge “ suitcases, not carry on size, but much bigger, and then a large pack pack stuffed. So they take up all the room in the overhead bins and if we are later boarding, there is no room so we have to check our small carry on. I have already paid for and checked in one bag! I certainly will not choose to fly with United again unless it is the “only” airline available!

Easy boarding, roomy seats, plenty of good food, very helpful snd friendly staff. Very smooth flight! Only thing that could have been better was to have cranberry juice. Women like this as it helps avoid UTI’s and not as sweet as other juices.

The crew was friendly, the seats are too small. Air travel is barely tolerable anymore.

Food was icecold or frozen including breakfast. Hopeless service. Rude crew.

The flight was very uncomfortable and there was no snacks served for the 13 hours international flight. In addition, the flight was delayed 3 hours

Due to a strike taking place with the airline, it negatively impacted my flight in multiple ways. My flight was delayed over 2 hours and the food served was mediocre at best.

Cabin crew were great. Seats are criminal for tall people

Flight was delayed 1.5 hrs due to problem with a previous flight to mine; I was informed appropriately via Text & Email, however, website did not keep up with messages sent by nearly an hour. When checking-in warm & friendly reception at check-in desk until female Air Canada Rep noticed my flight number and instantly pivoted to a condescending & sarcastic comments about getting my bag checked in since I’m running so late; then tone instantly changed again few minutes later when she muttered, “Oh, they’ve delayed it” another sign systems & worse front line staff, not fully informed or simply not reading their flight status updates. Flight crew were very friendly & did a great job trying to make up lost time due to the delay.

It was great, love the experience and will definitely recommend 👌. Communication was great

Book cheap flights from Washington, D.C. to Bangkok

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Bangkok found on KAYAK in the last 72 hours.
8/22Thu
2 stopsCathay Pacific
42h 31mDCA-BKK
$600
8/13Tue
2 stops
31h 49mDCA-BKK
$657
5/7Tue
2 stopsAmerican Airlines
25h 55mDCA-BKK
$756
5/21Tue
2 stopsAmerican Airlines
36h 15mDCA-BKK
$834
8/5Mon
3 stopsUnited Airlines
41h 55mDCA-BKK
$855
5/21Tue
3 stopsUnited Airlines
50h 35mDCA-BKK
$1,458
7/11Thu
2 stopsAir Canada
25h 40mDCA-BKK
$1,743
7/12Fri
2 stopsAir Canada
32h 20mDCA-BKK
$1,781
7/24Wed
2 stopsKorean Air
30h 25mDCA-BKK
$3,901
9/29Sun
2 stopsKorean Air
33h 20mDCA-BKK
$3,967

Search by stops

Search by airline

Search by price

Last minute flights from Reagan-National to Bangkok

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to Bangkok that are departing in the next 10 days.
5/5Sun
multi-stopQatar Airways
27h 40mDCA-BKK
5/17Fri
multi-stopQatar Airways
44h 40mBKK-DCA
$1,286
5/2Thu
multi-stopAmerican Airlines
27h 30mDCA-BKK
5/16Thu
multi-stopAmerican Airlines
25h 55mBKK-DCA
$1,322
5/3Fri
multi-stopJapan Airlines
29h 19mDCA-BKK
5/7Tue
multi-stopJapan Airlines
41h 12mBKK-DCA
$1,499
5/2Thu
multi-stopCathay Pacific
35h 15mDCA-BKK
5/17Fri
multi-stopCathay Pacific
33h 58mBKK-DCA
$1,548
5/3Fri
multi-stop
29h 28mDCA-BKK
5/14Tue
multi-stop
33h 47mBKK-DCA
$1,614
5/2Thu
multi-stopCathay Pacific
35h 25mDCA-BKK
5/14Tue
multi-stopCathay Pacific
32h 28mBKK-DCA
$1,648
5/2Thu
multi-stop
26h 22mDCA-BKK
5/13Mon
multi-stop
27h 41mBKK-DCA
$1,856
5/2Thu
multi-stopJapan Airlines
26h 22mDCA-BKK
5/18Sat
multi-stopJapan Airlines
24h 54mBKK-DCA
$3,102
5/2Thu
multi-stopAir Canada
28h 55mDCA-BKK
5/11Sat
multi-stopAir Canada
31h 32mBKK-DCA
$3,734
5/3Fri
multi-stopAir Canada
28h 55mDCA-BKK
5/11Sat
multi-stopAir Canada
31h 32mBKK-DCA
$3,799

Search by stops

Search by airline

Search by price

Reagan Washington National Airport - Bangkok Flights

Departure:

Reagan Washington National Airport (DCA)United States

Destination:

Bangkok (BKK)Thailand

Return flight deals:

Bangkok - Reagan Washington National Airport

Cabin classes: