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.

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).

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

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.

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.

฿20,385+ Cheap Flights from Thailand to Washington, D.C. Reagan-National Airport

Cheap flight deals from Thailand to Reagan-National

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 31 August 2026.

Thu 5/1109:10 -

2 stops43h 35m

Sun 8/1106:25 -

3 stops41h 05m

Deal found 30/8฿34,075

Wed 14/1007:00 -

2 stops26h 53m

Wed 31/317:00 -

3 stops29h 35m

Deal found 30/8฿34,108

Thu 12/1107:10 -

2 stops27h 20m

Mon 16/1106:25 -

2 stops34h 45m

Deal found 28/8฿34,240

Thu 3/907:00 -

2 stops27h 59m

Wed 23/909:30 -

2 stops32h 05m

Deal found 27/8฿34,506

Tue 13/1015:45 -

3 stops29h 14m

Tue 20/1007:28 -

2 stops29h 27m

Deal found 28/8฿34,638

Sun 11/1015:45 -

3 stops29h 14m

Sun 18/1006:00 -

2 stops30h 55m

Deal found 27/8฿34,870

Fri 9/1015:45 -

3 stops30h 16m

Sat 17/1019:00 -

2 stops27h 35m

Deal found 27/8฿35,069

Mon 14/907:00 -

2 stops26h 30m

Sun 11/1009:30 -

2 stops32h 05m

Deal found 31/8฿35,500

Mon 7/1200:15 -

2 stops30h 25m

Sun 10/106:00 -

2 stops28h 55m

Deal found 29/8฿38,251

Wed 9/1217:00 -

2 stops39h 00m

Fri 8/117:00 -

2 stops41h 55m

Deal found 31/8฿40,803

Wed 4/1100:15 -

2 stops23h 11m

Mon 9/1106:00 -

2 stops28h 55m

Deal found 30/8฿52,040

Sat 5/911:20 -

2 stops41h 39m

Thu 17/906:30 -

2 stops40h 50m

Deal found 30/8฿53,001

Best flights from Thailand to Reagan-National
Discover carefully curated flight deals from Thailand to Reagan-National that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Wed 14/1007:00 -

2 stops26h 53m

Wed 31/317:00 -

3 stops29h 35m

Deal found 30/8฿34,108

Wed 23/1200:55 -

2 stops27h 44m

Sat 2/106:00 -

2 stops29h 20m

Deal found 30/8฿38,119

Wed 9/1217:00 -

2 stops39h 00m

Fri 8/117:00 -

2 stops41h 55m

Deal found 31/8฿40,803

Thu 7/122:05 -

2 stops33h 32m

Thu 21/106:00 -

2 stops35h 05m

Deal found 31/8฿47,698

Wed 4/1100:15 -

2 stops23h 11m

Mon 9/1106:00 -

2 stops28h 55m

Deal found 29/8฿52,040

Sun 11/1007:55 -

2 stops25h 04m

Thu 1/408:00 -

2 stops28h 00m

Deal found 30/8฿59,664

Fri 25/1223:05 -

2 stops32h 55m

Sat 9/117:45 -

2 stops34h 20m

Deal found 28/8฿62,349

Mon 11/109:10 -

2 stops44h 24m

Sun 9/513:10 -

2 stops30h 15m

Deal found 29/8฿67,884

Thu 5/1109:10 -

2 stops25h 20m

Sun 8/1107:40 -

2 stops28h 40m

Deal found 30/8฿34,174

Mon 12/1011:00 -

2 stops23h 59m

Fri 2/413:00 -

2 stops34h 00m

Deal found 30/8฿74,149

Thu 12/1107:10 -

2 stops27h 20m

Mon 16/1106:25 -

2 stops34h 45m

Deal found 28/8฿34,240

Fri 11/1200:15 -

2 stops32h 24m

Sat 9/115:55 -

2 stops43h 00m

Deal found 29/8฿38,251

Fri 22/109:10 -

2 stops24h 43m

Fri 5/207:00 -

2 stops27h 50m

Deal found 28/8฿34,472

Tue 8/1200:15 -

2 stops34h 27m

Sun 10/119:30 -

2 stops39h 25m

Deal found 29/8฿38,251

Tue 8/1200:15 -

2 stops28h 24m

Fri 8/119:30 -

2 stops39h 25m

Deal found 29/8฿38,251

Thu 21/102:35 -

3 stops33h 10m

Fri 5/212:00 -

3 stops33h 50m

Deal found 28/8฿48,957

Thu 5/1111:25 -

2 stops44h 35m

Wed 11/1109:30 -

2 stops36h 55m

Deal found 27/8฿59,067

Mon 11/109:10 -

2 stops44h 24m

Tue 11/511:35 -

2 stops31h 50m

Deal found 29/8฿67,884

Sat 9/109:10 -

2 stops23h 55m

Wed 20/107:40 -

2 stops27h 10m

Deal found 31/8฿55,653

Sun 20/1209:10 -

2 stops25h 35m

Tue 19/115:30 -

3 stops32h 00m

Deal found 27/8฿71,132

Find flight deals from Thailand to Reagan-National

Round-trip from	฿34,075
One-way from	฿20,385
Popular in	August
Cheapest in	October
Average price	฿69,939

United Airlines
5/11-8/11
5 total stops
84h 40m total
Thailand to Washington, D.C.

Search Deals

14/12
3 total stops
52h 49m total
Thailand to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (฿253,302 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (฿87,046 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Cheapflights Fare Finder

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

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Wed 14/10

07:00-22:53

2 stops26h 53m

Washington, D.C. Reagan-National

Wed 31/3

17:00-09:35

3 stops29h 35m

฿34,108

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Thu 5/11

09:10-22:30

2 stops25h 20m

Washington, D.C. Reagan-National

Sun 8/11

07:40-00:20

2 stops28h 40m

฿34,174

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Thu 12/11

07:10-22:30

2 stops27h 20m

Washington, D.C. Reagan-National

Mon 16/11

06:25-05:10

2 stops34h 45m

฿34,240

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Fri 22/1

09:10-21:53

2 stops24h 43m

Washington, D.C. Reagan-National

Fri 5/2

07:00-22:50

2 stops27h 50m

฿34,472

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Wed 23/12

00:55-16:39

2 stops27h 44m

Washington, D.C. Reagan-National

Sat 2/1

06:00-23:20

2 stops29h 20m

฿38,119

Chiang MaiWashington, D.C.

CNX Chiang Mai - DCA Washington, D.C. Reagan-National

CNXDCA

Chiang Mai

Fri 11/12

00:15-20:39

2 stops32h 24m

Washington, D.C. Reagan-National

Sat 9/1

15:55-22:55

2 stops43h 00m

฿38,251

Chiang MaiWashington, D.C.

CNX Chiang Mai - DCA Washington, D.C. Reagan-National

CNXDCA

Chiang Mai

Tue 8/12

00:15-22:42

2 stops34h 27m

Washington, D.C. Reagan-National

Sun 10/1

19:30-22:55

2 stops39h 25m

฿38,251

Chiang MaiWashington, D.C.

CNX Chiang Mai - DCA Washington, D.C. Reagan-National

CNXDCA

Chiang Mai

Tue 8/12

00:15-16:39

2 stops28h 24m

Washington, D.C. Reagan-National

Fri 8/1

19:30-22:55

2 stops39h 25m

฿38,251

Chiang MaiWashington, D.C.

CNX Chiang Mai - DCA Washington, D.C. Reagan-National

CNXDCA

Chiang Mai

Wed 9/12

17:00-20:00

2 stops39h 00m

Washington, D.C. Reagan-National

Fri 8/1

17:00-22:55

2 stops41h 55m

฿40,803

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Thu 7/1

22:05-19:37

2 stops33h 32m

Washington, D.C. Reagan-National

Thu 21/1

06:00-05:05

2 stops35h 05m

฿47,698

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 42 resultsSorted by cheapest first

...

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.

BKK-DCA

CNX-DCA

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

TH0-DCA

BKK-DCA

CNX-DCA

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Thailand to Washington, D.C. Reagan-National Airport?
United Airlines, เดลต้า, and Korean Air can get you from Thailand to Washington, D.C. Reagan-National Airport in just under 23h 11m. Your travel time can differ by up to 4h 33m. The distance between Thailand and Washington, D.C. Reagan-National Airport is about 13584 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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Complete your trip

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Alternative routes for Thailand to Reagan-National

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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?

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Cheap flights from Thailand to Washington, D.C. Reagan-National Airport from ฿20,385

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 14/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Thailand to Reagan-National

Cheapest flights from Thailand to Reagan-NationalExplore 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 31 August 2026.

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 31 August 2026.

Best flights from Thailand to Reagan-NationalDiscover carefully curated flight deals from Thailand to Reagan-National that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Discover carefully curated flight deals from Thailand to Reagan-National that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Last-minute flights from Thailand to Reagan-NationalDiscover last-minute flight deals from Thailand to Reagan-National. Data last updated 31 August 2026 and is based on user searches.

Discover last-minute flight deals from Thailand to Reagan-National. Data last updated 31 August 2026 and is based on user searches.

One-way flights from Thailand to Reagan-NationalSearch for one-way flight options from Thailand to Reagan-National. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

Search for one-way flight options from Thailand to Reagan-National. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

Find flight deals from Thailand to Reagan-National

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Use the filters below to find and compare flights from Thailand to Washington, D.C. Reagan-National Airport that are best for you.

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

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Cheapflights Insights

Related info for your journey

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

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

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

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

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.

Complete your trip

Complete your trip to Reagan-National by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Thailand to Reagan-National by cabin class

Find flights from Thailand to Reagan-National, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Thailand and Reagan-National flights

Browse other Thailand and Reagan-National flight options. Last updated on 31 August 2026.

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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 31 August 2026.

Best flights from Thailand to Reagan-National
Discover carefully curated flight deals from Thailand to Reagan-National that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Last-minute flights from Thailand to Reagan-National
Discover last-minute flight deals from Thailand to Reagan-National. Data last updated 31 August 2026 and is based on user searches.

One-way flights from Thailand to Reagan-National
Search for one-way flight options from Thailand to Reagan-National. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.