Find flights
When to book
Airlines
FAQs

Cheap flights from Thailand to Washington, D.C. Reagan-National Airport from ฿18,402

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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — DCA
9 Feb — 16 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Thailand to Reagan-National

Keep the following information in mind while searching for Thailand to Reagan-National flight deals. Data was last updated 10 January 2026.

Round-trip from

฿31,812

One-way from

฿18,402

Popular in

August

Cheapest in

October

Average price

฿40,039
22/1-31/1
  • 22/1-31/1
  • 4 total stops
  • 75h 56m total
  • Thailand to Washington, D.C.
Search Deals
10/2
  • 10/2
  • 2 total stops
  • 38h 04m total
  • Thailand to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (฿19,357 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿28,219 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Thailand to Reagan-National

Enter your travel dates to find the best prices.

Cheapest flights from Thailand to Reagan-National
Explore the most affordable flight options available from Thailand to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 January 2026.

Thu 22/117:15BKK - DCA
2 stops38h 45mMultiple Airlines
Sat 31/109:59DCA - BKK
2 stops37h 11mMultiple Airlines
Deal found 7/1฿31,812
Mon 23/302:15BKK - DCA
2 stops26h 26mEVA Air
Tue 7/409:59DCA - BKK
2 stops37h 26mEVA Air
Deal found 9/1฿32,502
Mon 16/317:15BKK - DCA
2 stops37h 50mMultiple Airlines
Wed 8/409:59DCA - BKK
2 stops37h 56mMultiple Airlines
Deal found 10/1฿32,628
Sat 28/202:15BKK - DCA
2 stops29h 50mEVA Air
Tue 28/409:59DCA - BKK
2 stops37h 26mEVA Air
Deal found 10/1฿32,754
Thu 28/516:45BKK - DCA
2 stops38h 21mMultiple Airlines
Mon 8/617:00DCA - BKK
2 stops31h 20mMultiple Airlines
Deal found 8/1฿32,942
Tue 3/302:15BKK - DCA
2 stops27h 44mMultiple Airlines
Tue 7/418:41DCA - BKK
2 stops28h 44mMultiple Airlines
Deal found 10/1฿33,131
Thu 30/407:00BKK - DCA
2 stops25h 53mMultiple Airlines
Wed 29/711:00DCA - BKK
2 stops25h 10mMultiple Airlines
Deal found 8/1฿33,225
Tue 3/302:15BKK - DCA
2 stops27h 44mMultiple Airlines
Thu 7/509:59DCA - BKK
2 stops37h 26mMultiple Airlines
Deal found 10/1฿33,445
Wed 29/407:45BKK - DCA
2 stops42h 45mแอร์แคนาดา
Thu 30/709:40DCA - BKK
2 stops25h 15mแอร์แคนาดา
Deal found 8/1฿33,476
Sat 2/507:00BKK - DCA
2 stops25h 55mMultiple Airlines
Wed 29/711:00DCA - BKK
2 stops25h 10mMultiple Airlines
Deal found 8/1฿33,821
Fri 1/507:45BKK - DCA
2 stops25h 10mแอร์แคนาดา
Mon 3/820:40DCA - BKK
2 stops69h 25mแอร์แคนาดา
Deal found 8/1฿33,853

Cheapflights Fare Finder

 
Customise your flight search to find flights from Thailand to Reagan-National 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 17,341 searches. Data last updated 10 January 2026.
Use the filters below to find and compare flights from Thailand to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Thailand

Fly to

Reagan-National

Route

Depart

Return

Price

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 16/3

17:15-20:05

2 stops37h 50m

Washington, D.C. Reagan-National

Wed 8/4

09:59-10:55

2 stops37h 56m

฿32,628

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 3/3

02:15-17:59

2 stops27h 44m

Washington, D.C. Reagan-National

Tue 7/4

18:41-10:25

2 stops28h 44m

฿33,131

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 28/5

16:45-20:06

2 stops38h 21m

Washington, D.C. Reagan-National

Mon 8/6

17:00-11:20

2 stops31h 20m

฿33,884

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 29/3

17:15-20:00

2 stops37h 45m

Washington, D.C. Reagan-National

Sat 9/5

09:59-10:55

2 stops37h 56m

฿34,732

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 14/2

16:55-09:54

3 stops28h 59m

Washington, D.C. Reagan-National

Sat 21/2

06:00-00:20

2 stops30h 20m

฿35,831

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 20/6

01:20-21:48

2 stops31h 28m

Washington, D.C. Reagan-National

Wed 29/7

09:40-05:05

2 stops32h 25m

฿36,239

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Fri 27/3

02:15-20:00

2 stops28h 45m

Washington, D.C. Reagan-National

Sat 4/4

18:41-10:55

2 stops29h 14m

฿36,585

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 28/3

07:10-22:05

2 stops25h 55m

Washington, D.C. Reagan-National

Sat 4/4

08:20-09:45

3 stops38h 25m

฿37,244

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Wed 1/4

07:00-22:28

2 stops26h 28m

Washington, D.C. Reagan-National

Sun 5/4

17:00-04:35

2 stops48h 35m

฿37,339

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 28/5

15:40-10:17

3 stops29h 37m

Washington, D.C. Reagan-National

Mon 8/6

11:30-09:45

3 stops35h 15m

฿37,590

Flights are sorted by cheapest return flights first.

Deals found on 10/1

Showing 1-10 of 22 results
1
2
3

Best time to book a flight from Thailand to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Thailand with our price prediction graph.
Estimated return 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.

Cheapflights Insights

Everything you need to know about your flight from Thailand to Washington, D.C. Reagan-National Airport
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Reagan-National

Get insights into the airlines that provide service to Reagan-National. 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 Reagan-National. Reviews last updated 10 January 2026.
Get a feel of what it's like to fly with United Airlines from Thailand to Washington, D.C. Reagan-National Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,145 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,145 reviews
United Airlines
7.4
Good
9,145 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

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

  • How long is the flight from Thailand to Washington, D.C. Reagan-National Airport?

    United Airlines can get you from Thailand to Washington, D.C. Reagan-National Airport in just under 28h 59m. Your travel time can differ by up to . The distance between Thailand and Washington, D.C. Reagan-National Airport is about 14157 km.

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

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

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

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

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

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

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Thailand to Reagan-National

See prices for flight routes from nearby airports that may be better suited for you.
Chiang Mai to Dulles Intl flights
Chiang Mai to Baltimore flights
Chiang Mai to Reagan-National flights

Top airline flying from Thailand to Reagan-National

Discover the top airline that operate flights from Thailand to Reagan-National. 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 17,341 searches. Data last updated 10 January 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿31,424Average฿33,285FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Thailand to Reagan-National?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Thailand to Reagan-National. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Thailand to Reagan-National?

Cheapflights helps you find that perfect flight to Reagan-National from Thailand by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Thailand to Reagan-National with no change fees?

Yes! Cheapflights helps users easily find flights from Thailand to Reagan-National with no change fees.

Can Cheapflights notify me if prices for flights from Thailand to Reagan-National become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.