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$534+ Cheap flights from Reagan-National (DCA) to Bangkok

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — BKK
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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Cheap flight deals from Reagan-National to Bangkok

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Bangkok (TH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 22, 2025.

Round-trip from

$1,102
(China Airlines)

One-way from

$534
(China Airlines)

Popular in

July

Cheapest in

September

Average price

$1,314
From Washington, D.C. Reagan-National to Bangkok
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One-way flight from Washington, D.C. Reagan-National to Bangkok
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Highest demand for flights based on searches. 12% potential increase in price ($193 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Reagan-National to Bangkok

Cheapest flights from Reagan-National to Bangkok
Explore the most affordable flight options available from Reagan-National to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

This China Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/245:25 pmDCA - BKK
2 stops31h 40mMultiple Airlines
Wed 2/265:50 pmBKK - DCA
2 stops39h 09mMultiple Airlines
Deal found 2/21$1,092
This oojo deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/185:15 pmDCA - BKK
2 stops30h 25mCathay Pacific
Mon 3/317:00 pmBKK - DCA
2 stops36h 59mCathay Pacific
Deal found 2/21$1,142
This Air Canada deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:40 amDCA - BKK
2 stops25h 15mAir Canada
Thu 10/167:00 amBKK - DCA
2 stops25h 06mAir Canada
Deal found 2/21$1,206
This FlightHub deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/59:00 amDCA - BKK
2 stops41h 35mSingapore Airlines
Mon 3/103:40 pmBKK - DCA
2 stops40h 19mSingapore Airlines
Deal found 2/21$1,225
This Korean Air deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/36:59 amDCA - BKK
2 stops26h 31mKorean Air
Wed 3/199:40 amBKK - DCA
2 stops25h 00mKorean Air
Deal found 2/21$1,450
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/246:32 amDCA - DMK
3 stops29h 43mMultiple Airlines
Wed 2/269:20 amDMK - DCA
2 stops25h 15mMultiple Airlines
Deal found 2/21$2,000

Find flights from Reagan-National to Bangkok within your budget

Customize your flight search to find flights from Reagan-National to Bangkok that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.

Fly from

Reagan-National

Fly to

Bangkok

Route

Depart

Return

Price

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 3/10

5:25 pm-1:05 pm

2 stops32h 40m

Bangkok Suvarnabhumi

Tue 3/18

2:05 pm-4:55 pm

2 stops37h 50m

$1,105

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 3/18

5:15 pm-10:40 am

2 stops30h 25m

Bangkok Suvarnabhumi

Mon 3/31

7:00 pm-8:59 pm

2 stops36h 59m

$1,142

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Wed 3/5

9:00 am-2:35 pm

2 stops41h 35m

Bangkok Suvarnabhumi

Mon 3/10

3:40 pm-8:59 pm

2 stops40h 19m

$1,225

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Sun 4/13

4:10 pm-5:15 am

2 stops50h 05m

Bangkok Suvarnabhumi

Wed 4/23

8:10 am-8:53 am

2 stops35h 43m

$1,240

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 3/4

7:34 am-9:30 pm

2 stops25h 56m

Bangkok Suvarnabhumi

Tue 3/25

9:40 am-11:40 pm

2 stops25h 00m

$1,450

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Wed 3/5

3:55 pm-6:40 am

2 stops26h 45m

Bangkok Suvarnabhumi

Tue 3/18

2:00 am-6:51 pm

2 stops27h 51m

$1,507

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 4/15

6:00 pm-7:40 am

3 stops50h 40m

$536

Washington, D.C.Bangkok

DCA - DMK

DCADMK

Washington, D.C. Reagan-National

Sat 3/8

6:00 pm-10:05 pm

3 stops40h 05m

$570

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Wed 3/19

11:40 am-10:35 pm

2 stops23h 55m

$650

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Thu 3/27

9:40 am-5:15 am

2 stops32h 35m

$738

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 13 results
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Best time to book a flight from Reagan-National to Bangkok

Have a flexible travel schedule? Discover the best time to fly to Bangkok from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Reagan-National to Bangkok

Get recent, data-driven insights about flights from Reagan-National to Bangkok including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Bangkok?

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Bangkok (average of $976). Flying from Washington, D.C. Reagan-National Airport to Bangkok in June is currently the most expensive (average of $1,580). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DCA to BKK?

Find hourly flight availability from Reagan-National to Bangkok. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 22, 2025.

One of the essential ways to save on airfare from Washington, D.C. Reagan-National Airport to Bangkok is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 29% on airfare.

Rainfall in Bangkok by month

Plan your trip to Bangkok by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bangkok ranges from 0.4 - 12.6 inches per month. September is typically the wettest month, when rainfall can reach 12.6 in. January is typically the driest time to visit Bangkok when rainfall is around 0.4 in.

Temperature in Bangkok by month

Plan your trip to Bangkok by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bangkok, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

Reviews of airlines servicing Bangkok

Get insights into the airlines that provide service to Bangkok. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bangkok. Reviews last updated February 22, 2025.
Get a feel of what it's like to fly with Korean Air, Singapore Airlines and Cathay Pacific from Washington, D.C. to Bangkok by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,036 reviews

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Korean Air
8.4
Very good
1,036 reviews
Korean Air
8.4
Very good
1,036 reviews

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Singapore Airlines
8.1
Very good
1,297 reviews
Korean Air
8.4
Very good
1,036 reviews

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Cathay Pacific
7.5
Good
821 reviews
Korean Air
8.4
Very good
1,036 reviews

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Qatar Airways
7.4
Good
3,609 reviews
Korean Air
8.4
Very good
1,036 reviews

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Air Canada
7.0
Good
8,757 reviews
Korean Air
8.4
Very good
1,036 reviews

Overall

8.4

Crew

8.7

Entertainment

8.2

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Bangkok. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to Bangkok round-trip?

    Currently priced at $1,142, Cathay Pacific will fly you from Washington, D.C. Reagan-National Airport to Bangkok and back. In addition to Cathay Pacific, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Singapore Airlines and Air Canada - these airlines can fly you to your destination from $1,225 and $1,240, respectively. You may be able to fly from Washington, D.C. Reagan-National Airport to Bangkok for 17% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Bangkok one-way?

    To fly one-way, consider booking your trip with Cathay Pacific, which is currently one of the cheapest options available, starting at $650. Air Canada flights start at $738 while deals on Qatar Airways start at $784 one-way.

  • Can I find deals for flights from Reagan-National to Bangkok that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Bangkok flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Bangkok?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Bangkok.

  • Can I find deals for business class flights from Reagan-National to Bangkok?

    Yes. Cheapflights offers flight deals from Reagan-National to Bangkok by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Bangkok (average of $976). Flying from Washington, D.C. Reagan-National Airport to Bangkok in June is currently the most expensive (average of $1,580). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 5 airlines flying from Reagan-National to Bangkok

Discover the top 5 airlines that operate flights from Reagan-National to Bangkok. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$966Average$1,016FlexibilityNo cancel feeOn-time68%
American AirlinesCheapest$1,065Average$1,325FlexibilityNo cancel feeOn-time71%
Cathay PacificCheapest$1,152Average$1,333FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$1,260Average$1,606FlexibilityNo cancel feeOn-time67%
DeltaCheapest$1,314Average$1,565FlexibilityNo cancel feeOn-timeN/A
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