DCA - BKK

$575 Find Cheap Flights from Reagan Washington National Airport to Bangkok - Compare and Save

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 9/16. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Bangkok Suvarnabhumi Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Bangkok, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Bangkok, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

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

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

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

Everything you should know

Cheapest round-trip
$988
Typical prices: $1,085-$1,388
Delta
Mon 8/10Thu 12/10
DCA - BKK • 2 stops
Cheapest one-way
$575
Typical prices: $416-$585
Multiple Airlines
Wed 9/16
DCA - BKK • 3 stops
Top airlines
Cheapest • from $988 (round-trip)
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Reagan-National and Bangkok. You'll need at least 2 connections.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $893 (round-trip)
Shortest trip • 20h 14m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Bangkok!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

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

Mon, Aug 10 - Thu, Dec 10
Delta Logo
9:39 am - 11:35 pm
DCA
-
BKK
26h 56m
2 stops
Delta Logo
9:40 am - 10:15 pm
BKK
-
DCA
24h 35m
2 stops
$988Delta
Fri, Aug 14 - Mon, Aug 24
Delta Logo
9:00 am - 1:05 am
DCA
-
BKK
29h 05m
2 stops
Delta Logo
9:40 pm - 5:28 pm
BKK
-
DCA
30h 48m
2 stops
$1,028Delta
Sat, Oct 10 - Sat, Oct 24
Korean Air Logo
7:30 pm - 11:35 pm
DCA
-
BKK
41h 05m
2 stops
Korean Air Logo
11:30 pm - 1:25 pm
BKK
-
DCA
24h 55m
2 stops
$1,033Korean Air
Sat, Oct 10 - Sun, Oct 18
Korean Air Logo
7:30 pm - 9:45 pm
DCA
-
BKK
39h 15m
2 stops
Korean Air Logo
11:30 pm - 3:14 pm
BKK
-
DCA
26h 44m
2 stops
$1,034Korean Air
Fri, Oct 2 - Sat, Oct 31
Delta Logo
10:10 am - 1:05 am
DCA
-
BKK
27h 55m
2 stops
Delta Logo
11:15 pm - 1:44 pm
BKK
-
DCA
25h 29m
2 stops
$1,038Delta
Wed, Sep 2 - Fri, Sep 4
Korean Air Logo
6:00 am - 9:45 pm
DCA
-
BKK
28h 45m
2 stops
Korean Air Logo
9:50 am - 11:48 pm
BKK
-
DCA
24h 58m
2 stops
$1,043Korean Air
Wed, Sep 9 - Mon, Oct 12
Multiple Airlines Logo
8:00 am - 11:00 pm
DCA
-
BKK
28h 00m
2 stops
Multiple Airlines Logo
5:30 pm - 10:26 am
BKK
-
DCA
27h 56m
2 stops
$1,044Multiple Airlines
Mon, Nov 9 - Fri, Nov 27
Multiple Airlines Logo
6:50 am - 11:35 pm
DCA
-
BKK
28h 45m
2 stops
Multiple Airlines Logo
7:15 pm - 10:08 am
BKK
-
DCA
26h 53m
2 stops
$1,045Multiple Airlines
Sat, Oct 10 - Tue, Oct 13
Delta Logo
6:00 am - 9:45 pm
DCA
-
BKK
28h 45m
2 stops
Delta Logo
9:50 am - 11:18 pm
BKK
-
DCA
24h 28m
2 stops
$1,069Delta
Wed, Sep 9 - Wed, Sep 23
Air Canada Logo
9:40 am - 5:05 am
DCA
-
BKK
32h 25m
2 stops
Air Canada Logo
7:05 am - 10:20 am
BKK
-
DCA
38h 15m
2 stops
$1,070Air Canada
Booking Insights

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

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.

How much is a round-trip flight from Washington, D.C. Reagan-National Airport to Bangkok Suvarnabhumi Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Reagan-National Airport to Bangkok Suvarnabhumi Airport departing in August.

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 round-trip 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 $974 (return) on average. On the other hand, the most expensive months are May and June, where the average cost of round-trip tickets is $2,030 and $1,714 respectively.

Good to know

Low seasonMay
Cheapest flight$575
Best time to beat the crowds but there is an average 61% increase in price.
Most popular time to fly and prices are also 17% lower on average.
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 5 days, the lowest price for a flight from Washington, D.C. Reagan-National Airport to Bangkok Suvarnabhumi Airport was $581 for a one-way ticket and $988 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?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Reagan Washington National Airport and Bangkok, with Star Alliance 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 $953 and an overall rating of 8.4, Korean Air is the most popular choice. ANA is also a great choice for the route, with an average price of $1,087 and an overall rating of 8.3.

  • 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.

Reviews of the top 4 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.
8.4
Korean AirOverall score based on 1218 reviews
8.7Crew
8.2Entertainment
8.1Food
8.5Boarding
8.3Comfort
Airline reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

8.0 ExcellentCarlos J, Apr 2026
TPA - ATL
Read more Korean Air reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

Lousy entertainment system. Crews are excellent. Meal is just mediocre.

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

It was a great experience in all aspects including passengers are respectful to each other. I will consider to fly with Korean Air again in the future.

Excellent service, love the extra amenities (water bottles, blankets, etc.).

It would be better if flight crew can clearly communicate in english. But they are kind and accommodating. Food is good, especially the sandwiches on the self-serving snack trays. They are better than the ones served. Boarding was organized.

They had the same movie choice as my previous flight, not much of a choice, movies were not up to date, music was uninteresting. Other than sitting on the ground for 40 minutes after boarding the plane, with pilot telling us that they couldn't load the plane because of rain, (bullshit) We finally got into Bangkok of course 40 minutes late.

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

After the gauntlet of unnecessary security, and the two mile jog to make the flight, the flight was delayed 20 minutes on the ground for takeoff.. However, once in the air, the crew gave its usual excellent service.

UA discouraged people to choose seat on economy class by charging about three times of another airlines. For example, ANA will charge USD60 to choose an aisle seat but UA is charging USD 219.

Roomy airlines. Friendly staff. Timely service. Temp was warm during the flight.

As usual the flight from AUS in Austin to SFO was late because they didn’t have adequate staffing to board the plane on time creating a 1 hour delay, which resulted in me missing my flight to Osaka due to a missed connection. When I got to the gate 10 minutes late after landing exactly the time the connecting flight was taking off, I saw my flight to Osaka sitting at the gate and that gates had closed. I attempted to contact United Via chat on the United App and was given the runaround and passed between 2 separate “agents” who after saying they could rebook me, told me I needed to go to ANA even though they’re partners and all of my ticketing was through United. After going to ANA’s gate at SFO to try and get help I was told I would need to leave and go to United’s ticket counter in order to get help. The ANA agents said that it was United’s issue. An hour after running to try to make my flight I got to the United counter. I showed the agent my itinerary and she helped as much as she could. I was booked on a flight that would occur 13 hours after my original flight to Osaka and given $45 in vouchers which doesn’t cover much at SFO. I had also spent 30000 miles with United to get an upgrade with more legroom. And that was not refunded to this point. Ultimately I lost 1 whole day of vacation in with my wife and kids and, the 30000 airline miles and I’m out the money and time I spent. In these situations United and their partners should go out of their way to communicate and accommodate but I was left to my own devices to find the right resources. The only option was to fly to Seoul 12 hours and take a connecting flight to Osaka: I am a United Skyniles member and would not recommend booking a flight with them unless you thoroughly understand the routes as it is likely you will be left to your own devices to resolve the situation.

Service is great. Seat is ok. Not much storage room and seat is hard but seat topper was nice. Cabin was very warm most of the flight. Washoku Food was good.

I like the service very much. The food just okay but maybe different culture who like, who don't like.

Seats had more space than expected. No recline, that is good.

We purchased premium economy seats 9 months ago and got bumped to economy when we tried to board the plane. It was a huge fiasco while they struggled to find us seats. I tried reaching out to Kayak to see how we can get refunded for the extra money we spent on premium but have heard nothing back. It was a 14 hour flight and were disappointed that we lost our seats after selecting them 9 months ago.

Excellent. All the ticket prices have gone up so much. With only economy as the option, I thought I better pay for a good airline and I am glad I took ANA. The only thing is the long layover at Hanaeda enroute to Singapore. Any chance to bring back the service to land at Narita instead for the transit and a shorter layover will be fantastic. I am a fan of ANA.

The flight was canceled due to a mechanical problem. The rebooked flights were snot good. Many complexities. Will not use a third party booking again.

Our flight that was before this one was delayed, and I appreciate that this airline sent a very nice flight attendant to pick us up at the Chicago airport and walked us to the gate. They waited for us, so we didn't miss the flight. That was amazing and outstanding customer service! We appreciate you so much!!

FA was a bit strange and dodgy not very characteristic of Delta

Not really a “Delta” problem but worth mentioning: Boarding was a difficult process. TSA seemed understaffed and Pre-Check took longer than regular TSA. The supervisor was frazzled and yelled at travelers. Once through TSA, we had to put our carry-ons through another x-ray machine. Then queue up to board with both boarding pass and ID. Then, when we got to the stairs on the tarmac, we had to show our boarding pass again. Maybe this is just normal for Kona since the terminal is outdoors (but still a “secured” area).

The gentleman at the gate I think his name is RIE was exceptional

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

I wouldn't say I liked being forced to check my small roller bag at the gate; too many people had bags and were in a higher boarding group.

715PM departure was 2.5 hours late. Received hotel & food voucher but after we already booked a room. Entire team just seemed like they were 2-3 steps behind in execution, and notifcations.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

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.

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.

Staff members were not helpful they ignored all calls for an attendant.

Never nice, United Express partners always do an amazing job.

Being stick waiting for gate at ORD cause me to almost miss my connecting flight…being deaf United made no no effort to keep me updated as I couldn’t hear the PA

Is ANA airlines not united airlines, ANA airlines crew working professionally , more services providing, happy face to service customer

The flight was on time and the crew were great.

I was forced to gate check my carry on luggage. Somehow it did not arrive at my destination. I still have yet to receive my bag r days after arrival.

Boarding area is a mess. Lines not bounded and gate area too small. Food options (on this specific flight) were poor and you couldn’t pick part of it since it was like a mash of chicken and other unrecognisable stuff. Comfort of seats along with child noise made it difficult to get a good sleep. Last, the flight attendant that served my aisle was rude (others seemed fine) towards me and others.

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

Information on your arrival and departure airports