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Cheap flights from Thailand to Washington, D.C. Reagan-National Airport from ฿21,505

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 29/6. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — DCA
22 Jun — 29 Jun1
1 adult

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 17 June 2025.

Round-trip from

฿32,241

One-way from

฿21,505

Popular in

August

Cheapest in

January

Average price

฿38,533
แอร์แคนาดา
  • แอร์แคนาดา
  • 18/11-29/11
  • 4 total stops
  • 55h 40m total
  • Thailand to Washington, D.C.
Search Deals
เดลต้า
  • เดลต้า
  • 29/6
  • 2 total stops
  • 36h 18m total
  • Thailand to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (฿153,304 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (฿39,135 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Thailand to Reagan-National

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 17 June 2025.

Tue 18/1108:35BKK - DCA
2 stops24h 25mแอร์แคนาดา
Sat 29/1111:00DCA - BKK
2 stops31h 15mแอร์แคนาดา
Deal found 16/6฿32,241
Fri 20/622:05BKK - DCA
2 stops29h 17mJapan Airlines
Tue 24/609:59DCA - BKK
2 stops26h 01mJapan Airlines
Deal found 15/6฿33,441
Mon 14/707:00BKK - DCA
2 stops25h 27mUnited Airlines
Mon 4/818:00DCA - BKK
2 stops47h 35mUnited Airlines
Deal found 16/6฿33,895
Thu 19/602:35BKK - DCA
2 stops31h 10mเดลต้า
Tue 24/609:39DCA - BKK
2 stops26h 46mเดลต้า
Deal found 16/6฿35,744
Thu 11/901:35BKK - DCA
2 stops27h 24mEVA Air
Sat 1/1118:53DCA - BKK
2 stops29h 17mEVA Air
Deal found 17/6฿39,149
Tue 5/811:35CNX - DCA
2 stops45h 07mEVA Air
Wed 17/908:59DCA - CNX
2 stops38h 26mEVA Air
Deal found 15/6฿42,231
Tue 29/708:05BKK - DCA
2 stops25h 55mAmerican Airlines
Tue 14/1022:09DCA - BKK
2 stops30h 01mAmerican Airlines
Deal found 17/6฿47,161
Wed 18/602:40BKK - DCA
2 stops49h 03mChina Airlines
Wed 25/609:59DCA - BKK
2 stops39h 11mChina Airlines
Deal found 17/6฿47,550
Sat 13/1208:00BKK - DCA
2 stops26h 38mFinnair
Wed 7/117:49DCA - BKK
2 stops31h 26mFinnair
Deal found 16/6฿52,675
Mon 4/823:15CNX - DCA
2 stops51h 34mเดลต้า
Mon 6/1016:40DCA - CNX
2 stops42h 15mเดลต้า
Deal found 17/6฿54,881
Sun 27/719:00BKK - DCA
2 stops39h 11mCathay Pacific
Sun 19/1012:16DCA - BKK
2 stops24h 34mCathay Pacific
Deal found 17/6฿59,195
Mon 4/823:15CNX - DCA
2 stops26h 44mKorean Air
Tue 7/1008:20DCA - CNX
2 stops26h 35mKorean Air
Deal found 17/6฿66,071

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 17 June 2025.
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

Tue 18/11

08:35-21:00

2 stops24h 25m

Washington, D.C. Reagan-National

Sat 29/11

11:00-06:15

2 stops31h 15m

฿32,241

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 15/9

09:35-09:58

2 stops59h 23m

Washington, D.C. Reagan-National

Sat 20/9

07:00-04:35

2 stops58h 35m

฿33,733

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 5/7

09:45-16:21

2 stops41h 36m

Washington, D.C. Reagan-National

Mon 7/7

19:06-05:50

2 stops47h 44m

฿33,830

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 14/9

02:35-21:14

2 stops29h 39m

Washington, D.C. Reagan-National

Sat 20/9

06:10-23:25

2 stops30h 15m

฿35,744

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 11/9

01:35-17:59

2 stops27h 24m

Washington, D.C. Reagan-National

Sat 1/11

18:53-11:10

2 stops29h 17m

฿39,149

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 5/8

11:35-21:42

2 stops45h 07m

Washington, D.C. Reagan-National

Wed 17/9

08:59-10:25

2 stops38h 26m

฿42,231

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 29/7

08:05-23:00

2 stops25h 55m

Washington, D.C. Reagan-National

Tue 14/10

22:09-15:10

2 stops30h 01m

฿47,161

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 13/12

08:00-22:38

2 stops26h 38m

Washington, D.C. Reagan-National

Wed 7/1

17:49-13:15

2 stops31h 26m

฿52,675

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Mon 4/8

23:15-15:49

2 stops51h 34m

Washington, D.C. Reagan-National

Mon 6/10

16:40-21:55

2 stops42h 15m

฿54,881

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 27/7

19:00-23:11

2 stops39h 11m

Washington, D.C. Reagan-National

Sun 19/10

12:16-23:50

2 stops24h 34m

฿59,195

Flights are sorted by cheapest return flights first.

Deals found on 17/6

Showing 1-10 of 37 results
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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

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

Find hourly flight availability from Thailand to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 June 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Thailand to Washington, D.C. Reagan-National Airport as you normally would.

Rainfall in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 66.0 mm.

Temperature in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 17 June 2025.
See what other customers who have flown with EVA Air, Korean Air and Japan Airlines from Thailand to Washington, D.C. have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very Good
1,204 reviews
Check prices

Crew

8.6

Comfort

8.3

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very Good
1,204 reviews
EVA Air
8.4
Very Good
1,204 reviews
Check prices

Crew

8.6

Comfort

8.3

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very Good
1,090 reviews
EVA Air
8.4
Very Good
1,204 reviews
Check prices

Crew

8.6

Comfort

8.3

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very Good
1,494 reviews
EVA Air
8.4
Very Good
1,204 reviews
Check prices

Crew

8.6

Comfort

8.3

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very Good
742 reviews
EVA Air
8.4
Very Good
1,204 reviews
Check prices

Crew

8.6

Comfort

8.3

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Emirates
8.1
Very Good
3,268 reviews
EVA Air
8.4
Very Good
1,204 reviews
Check prices

Crew

8.6

Comfort

8.3

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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.

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

    The cheapet airlines for a one-way flight from Thailand to Washington, D.C. Reagan-National Airport are เดลต้า (฿21,505), China Airlines (฿21,894), and แอร์แคนาดา (฿22,380).

  • 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 Baltimore flights
Chiang Mai to Dulles Intl 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 17 June 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿32,457Average฿34,379FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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

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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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