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.

฿20,186+ 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 26 August 2026.

Thu 3/907:00 -

2 stops26h 13m

Wed 23/917:10 -

3 stops29h 25m

Deal found 25/8฿34,156

Thu 12/1109:10 -

3 stops42h 59m

Mon 16/1119:05 -

3 stops52h 25m

Deal found 21/8฿34,287

Sun 25/1016:55 -

3 stops28h 00m

Fri 30/1012:50 -

3 stops47h 00m

Deal found 25/8฿34,548

Fri 16/1015:45 -

3 stops29h 14m

Sat 24/1019:00 -

2 stops29h 30m

Deal found 24/8฿34,745

Tue 22/915:45 -

3 stops28h 10m

Tue 29/907:28 -

2 stops29h 27m

Deal found 23/8฿34,777

Sun 15/1111:50 -

2 stops42h 09m

Sun 22/1109:30 -

2 stops61h 05m

Deal found 25/8฿42,531

Thu 5/1111:50 -

2 stops40h 26m

Wed 11/1117:11 -

2 stops29h 24m

Deal found 26/8฿50,121

Wed 4/1100:15 -

2 stops23h 11m

Mon 9/1106:00 -

2 stops28h 55m

Deal found 25/8฿52,019

Thu 5/1109:10 -

2 stops45h 41m

Wed 11/1112:10 -

2 stops29h 55m

Deal found 25/8฿53,164

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 26 August 2026.

Thu 12/1109:10 -

2 stops25h 20m

Mon 16/1119:05 -

3 stops52h 25m

Deal found 23/8฿34,319

Sun 25/1021:30 -

2 stops32h 07m

Fri 30/1006:05 -

2 stops31h 40m

Deal found 25/8฿38,147

Sun 15/1111:50 -

2 stops42h 09m

Sun 22/1109:30 -

2 stops61h 05m

Deal found 25/8฿42,531

Thu 5/1111:50 -

2 stops40h 26m

Wed 11/1117:11 -

2 stops29h 24m

Deal found 26/8฿50,121

Wed 4/1100:15 -

2 stops23h 11m

Mon 9/1106:00 -

2 stops28h 55m

Deal found 25/8฿52,019

Thu 5/1109:10 -

2 stops45h 41m

Wed 11/1112:10 -

2 stops29h 55m

Deal found 25/8฿53,164

Wed 23/1223:05 -

2 stops32h 00m

Tue 5/118:13 -

2 stops57h 52m

Deal found 24/8฿60,754

Sun 25/1016:55 -

3 stops37h 20m

Fri 30/1017:49 -

2 stops42h 01m

Deal found 25/8฿34,548

Mon 28/1223:15 -

2 stops31h 04m

Sun 3/119:30 -

2 stops39h 50m

Deal found 26/8฿41,615

Mon 14/907:00 -

2 stops26h 13m

Sun 11/1017:59 -

2 stops28h 36m

Deal found 26/8฿42,368

Fri 9/1017:30 -

2 stops35h 27m

Fri 16/1016:20 -

3 stops32h 50m

Deal found 25/8฿50,023

Sat 12/915:45 -

3 stops29h 14m

Sun 11/1017:59 -

2 stops28h 36m

Deal found 26/8฿42,629

Find flight deals from Thailand to Reagan-National

Round-trip from	฿34,287
One-way from	฿20,186
Popular in	August
Cheapest in	October
Average price	฿69,031

United Airlines
12/11-16/11
6 total stops
95h 24m total
Thailand to Washington, D.C.

Search Deals

7/12
2 total stops
42h 05m total
Thailand to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (฿246,781 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (฿84,798 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

Thu 12/11

09:10-22:30

2 stops25h 20m

Washington, D.C. Reagan-National

Mon 16/11

19:05-11:30

3 stops52h 25m

฿34,319

BangkokWashington, D.C.

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

BKKDCA

Bangkok Suvarnabhumi

Sun 25/10

16:55-19:15

3 stops37h 20m

Washington, D.C. Reagan-National

Fri 30/10

17:49-22:50

2 stops42h 01m

฿34,548

BangkokWashington, D.C.

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

BKKDCA

Bangkok Suvarnabhumi

Sun 25/10

21:30-18:37

2 stops32h 07m

Washington, D.C. Reagan-National

Fri 30/10

06:05-00:45

2 stops31h 40m

฿38,147

BangkokWashington, D.C.

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

BKKDCA

Bangkok Suvarnabhumi

Mon 28/12

23:15-18:19

2 stops31h 04m

Washington, D.C. Reagan-National

Sun 3/1

19:30-23:20

2 stops39h 50m

฿41,615

BangkokWashington, D.C.

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

BKKDCA

Bangkok Suvarnabhumi

Mon 14/9

07:00-22:13

2 stops26h 13m

Washington, D.C. Reagan-National

Sun 11/10

17:59-09:35

2 stops28h 36m

฿42,368

Chiang MaiWashington, D.C.

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

CNXDCA

Chiang Mai

Sun 15/11

11:50-17:59

2 stops42h 09m

Washington, D.C. Reagan-National

Sun 22/11

09:30-10:35

2 stops61h 05m

฿42,531

BangkokWashington, D.C.

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

BKKDCA

Bangkok Suvarnabhumi

Sat 12/9

15:45-09:59

3 stops29h 14m

Washington, D.C. Reagan-National

Sun 11/10

17:59-09:35

2 stops28h 36m

฿42,629

BangkokWashington, D.C.

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

BKKDCA

Bangkok Suvarnabhumi

Fri 9/10

17:30-17:57

2 stops35h 27m

Washington, D.C. Reagan-National

Fri 16/10

16:20-12:10

3 stops32h 50m

฿50,023

Chiang MaiWashington, D.C.

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

CNXDCA

Chiang Mai

Thu 5/11

11:50-16:16

2 stops40h 26m

Washington, D.C. Reagan-National

Wed 11/11

17:11-10:35

2 stops29h 24m

฿50,121

Fastest return journey

Chiang MaiWashington, D.C.

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

CNXDCA

Chiang Mai

Wed 4/11

00:15-11:26

2 stops23h 11m

Washington, D.C. Reagan-National

Mon 9/11

06:00-22:55

2 stops28h 55m

฿52,019

Flights are sorted by cheapest return flights first.

Deals found on 22/8

Showing 1-10 of 35 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, EVA Air, 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 19h 48m. 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

Chiang Mai to Reagan-National flights

Chiang Mai to Dulles Intl flights

Chiang Mai to Baltimore flights

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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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Cheap flights from Thailand to Washington, D.C. Reagan-National Airport from ฿20,186

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 7/12. 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 26 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 26 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 26 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 26 August 2026.

Last-minute flights from Thailand to Reagan-NationalDiscover last-minute flight deals from Thailand to Reagan-National. Data last updated 26 August 2026 and is based on user searches.

Discover last-minute flight deals from Thailand to Reagan-National. Data last updated 26 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 26 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 26 August 2026.

Find flight deals from Thailand to Reagan-National

Round-trip from

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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.

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.

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 26 August 2026.

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Check out other popular destinations found by fellow travellers in 2026

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

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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 26 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 26 August 2026.

Last-minute flights from Thailand to Reagan-National
Discover last-minute flight deals from Thailand to Reagan-National. Data last updated 26 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 26 August 2026.