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Cheap flights from Thailand to Washington, D.C. Reagan-National Airport from ฿20,304

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — DCA
28 May — 4 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap 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 28 April 2026.

Tue 28/415:45
BKK
-
DCA
3 stops28h 11m
United Airlines
Tue 5/511:55
DCA
-
BKK
3 stops34h 40m
United Airlines
Deal found 25/4฿35,630
Thu 29/1007:10
BKK
-
DCA
2 stops44h 46m
United Airlines
Sun 1/1119:00
DCA
-
BKK
2 stops46h 10m
United Airlines
Deal found 23/4฿35,662
Mon 19/1001:35
BKK
-
DCA
2 stops29h 25m
Multiple Airlines
Sun 25/1009:30
DCA
-
BKK
2 stops38h 15m
Multiple Airlines
Deal found 24/4฿36,600
Sun 7/609:35
BKK
-
DCA
2 stops47h 18m
United Airlines
Thu 23/707:55
DCA
-
BKK
2 stops29h 00m
United Airlines
Deal found 23/4฿36,826
Mon 14/911:35
CNX
-
DCA
2 stops43h 25m
Multiple Airlines
Wed 30/918:59
DCA
-
CNX
2 stops28h 26m
Multiple Airlines
Deal found 24/4฿37,052
Mon 1/616:45
BKK
-
DCA
2 stops38h 21m
EVA Air
Fri 28/818:59
DCA
-
BKK
2 stops29h 21m
EVA Air
Deal found 23/4฿37,440
Tue 28/415:45
BKK
-
DCA
2 stops28h 11m
Multiple Airlines
Tue 5/511:55
DCA
-
BKK
1 stop34h 40m
Multiple Airlines
Deal found 25/4฿37,602
Wed 26/811:35
CNX
-
DCA
2 stops41h 24m
Multiple Airlines
Wed 30/918:59
DCA
-
CNX
2 stops28h 26m
Multiple Airlines
Deal found 24/4฿37,634
Wed 16/1209:40
BKK
-
DCA
2 stops25h 38m
เดลต้า
Sun 3/106:10
DCA
-
BKK
2 stops29h 10m
เดลต้า
Deal found 23/4฿37,764
Tue 9/601:35
BKK
-
DCA
2 stops29h 25m
EVA Air
Wed 9/909:30
DCA
-
BKK
2 stops38h 50m
EVA Air
Deal found 27/4฿37,828
Tue 28/407:00
BKK
-
DCA
2 stops25h 31m
United Airlines
Wed 6/511:55
DCA
-
BKK
3 stops34h 40m
United Airlines
Deal found 25/4฿37,861
Mon 12/1011:20
CNX
-
DCA
2 stops43h 40m
China Airlines
Thu 29/1017:04
DCA
-
CNX
2 stops30h 21m
China Airlines
Deal found 24/4฿39,833

Find 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 28 April 2026.

Round-trip from

฿36,600

One-way from

฿20,304

Popular in

April

Cheapest in

October

Average price

฿59,879
19/10-25/10
  • 19/10-25/10
  • 4 total stops
  • 67h 40m total
  • Thailand to Washington, D.C.
Search Deals
กัลฟ์แอร์
  • กัลฟ์แอร์
  • 1/10
  • 2 total stops
  • 37h 47m total
  • Thailand to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (฿256,868 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (฿66,935 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 28 April 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

Fly to

Route

Depart

Return

Price

Cheapest return flight

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Mon 12/10

11:20-20:00

2 stops43h 40m

Washington, D.C. Reagan-National

Thu 29/10

17:04-10:25

2 stops30h 21m

฿39,833

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 19/8

11:20-17:59

2 stops41h 39m

Washington, D.C. Reagan-National

Tue 15/9

17:00-10:20

2 stops30h 20m

฿42,710

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 18/8

11:35-20:00

2 stops43h 25m

Washington, D.C. Reagan-National

Mon 14/9

18:59-10:25

2 stops28h 26m

฿43,357

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 19/8

11:35-20:00

2 stops43h 25m

Washington, D.C. Reagan-National

Mon 14/9

09:30-10:25

2 stops37h 55m

฿43,519

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 19/8

11:35-20:00

2 stops43h 25m

Washington, D.C. Reagan-National

Fri 18/9

09:30-10:25

2 stops37h 55m

฿43,519

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 18/8

11:35-20:00

2 stops43h 25m

Washington, D.C. Reagan-National

Fri 18/9

09:30-10:25

2 stops37h 55m

฿43,939

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 12/8

11:35-17:59

2 stops41h 24m

Washington, D.C. Reagan-National

Thu 17/9

18:59-10:25

2 stops28h 26m

฿46,041

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 4/6

21:40-14:13

2 stops27h 33m

Washington, D.C. Reagan-National

Fri 26/6

06:00-21:45

2 stops28h 45m

฿46,428

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 6/6

21:40-16:30

2 stops29h 50m

Washington, D.C. Reagan-National

Sun 21/6

06:00-05:45

2 stops36h 45m

฿46,461

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 6/7

15:45-09:59

3 stops29h 14m

Washington, D.C. Reagan-National

Mon 20/7

18:10-09:35

3 stops28h 25m

฿48,433

Flights are sorted by cheapest return flights first.

Deals found on 25/4

Showing 1-10 of 32 resultsSorted by cheapest first
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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.

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?

    China Airlines, เดลต้า, and Japan Airlines can get you from Thailand to Washington, D.C. Reagan-National Airport in just under 27h 33m. Your travel time can differ by up to 16h 07m. The distance between Thailand and Washington, D.C. Reagan-National Airport is about 14157 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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

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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 Reagan-National flights
Chiang Mai to Dulles Intl flights
Chiang Mai to Baltimore 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.

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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!

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