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. Find deals

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). Find deals

What is the cheapest month to fly from Thailand to Washington, D.C. Reagan-National Airport?

January is one of the best times of the year to fly to Washington, D.C. Reagan-National Airport from Thailand. Prices for January average ฿36,559 per person but you can even find prices for as low as ฿31,203. The most expensive prices can be found in the month of August. Opting for a January flight can save you 29% on your journey compared to booking in August Find deals

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.

฿19,470+ Flights from Thailand to Washington, D.C. Reagan-National Airport

Cheap flight deals from Thailand to Reagan-National

Round-trip from	฿35,166
One-way from	฿19,470
Popular in	August
Cheapest in	January
Average price	฿33,803

แอร์แคนาดา
17/11-29/11
4 total stops
74h 41m total
Thailand to Washington, D.C.

Search Deals

30/1
2 total stops
42h 07m total
Thailand to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (฿55,014 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (฿31,206 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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 14 September 2025.

Mon 17/1108:15BKK - DCA

2 stops38h 11mแอร์แคนาดา

Sat 29/1106:00DCA - BKK

2 stops36h 30mแอร์แคนาดา

Deal found 13/9฿35,166

Sun 26/1000:55BKK - DCA

2 stops29h 04mเดลต้า

Mon 3/1106:00DCA - BKK

2 stops27h 30mเดลต้า

Deal found 12/9฿35,737

Sun 21/1209:40BKK - DCA

2 stops24h 20mเดลต้า

Thu 1/106:00DCA - BKK

2 stops29h 20mเดลต้า

Deal found 14/9฿35,769

Sat 20/1216:55BKK - DCA

3 stops34h 37mUnited Airlines

Thu 1/117:59DCA - BKK

2 stops53h 26mUnited Airlines

Deal found 12/9฿36,054

Thu 13/1109:10BKK - DCA

2 stops23h 45mUnited Airlines

Sun 16/1114:51DCA - BKK

3 stops32h 34mUnited Airlines

Deal found 14/9฿37,481

Sat 25/1007:00BKK - DCA

3 stops39h 29mUnited Airlines

Tue 28/1015:30DCA - BKK

3 stops32h 55mUnited Airlines

Deal found 14/9฿37,576

Wed 12/1102:15BKK - DCA

2 stops29h 45mMultiple Airlines

Sun 16/1109:59DCA - BKK

2 stops36h 46mMultiple Airlines

Deal found 14/9฿37,640

Fri 19/901:35BKK - DCA

2 stops30h 24mMultiple Airlines

Sat 27/918:59DCA - BKK

2 stops29h 11mMultiple Airlines

Deal found 13/9฿38,845

Tue 16/901:35BKK - DCA

2 stops27h 24mMultiple Airlines

Fri 19/918:59DCA - BKK

2 stops29h 21mMultiple Airlines

Deal found 13/9฿38,908

Tue 16/1217:50BKK - DCA

2 stops34h 18mMultiple Airlines

Sat 3/117:00DCA - BKK

2 stops28h 50mMultiple Airlines

Deal found 14/9฿38,940

Wed 3/1217:15BKK - DCA

2 stops38h 45mMultiple Airlines

Wed 31/1209:59DCA - BKK

2 stops37h 31mMultiple Airlines

Deal found 13/9฿39,162

Mon 17/1100:55BKK - DCA

2 stops27h 09mเดลต้า

Sat 29/1106:06DCA - BKK

2 stops29h 14mเดลต้า

Deal found 12/9฿39,225

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 14 September 2025.

Mon 17/1108:15BKK - DCA

2 stops38h 11mแอร์แคนาดา

Sat 29/1106:00DCA - BKK

2 stops36h 30mแอร์แคนาดา

Deal found 13/9฿35,166

Sun 26/1000:55BKK - DCA

2 stops29h 04mเดลต้า

Mon 3/1106:00DCA - BKK

2 stops27h 30mเดลต้า

Deal found 12/9฿35,737

Sat 20/1216:55BKK - DCA

3 stops34h 37mUnited Airlines

Thu 1/117:59DCA - BKK

2 stops53h 26mUnited Airlines

Deal found 12/9฿36,054

Wed 3/1217:15BKK - DCA

2 stops38h 45mMultiple Airlines

Wed 31/1209:59DCA - BKK

2 stops37h 31mMultiple Airlines

Deal found 13/9฿39,162

Fri 7/1111:50CNX - DCA

2 stops44h 10mEVA Air

Wed 21/109:30DCA - CNX

2 stops37h 05mEVA Air

Deal found 14/9฿51,275

Sat 8/1111:25CNX - DCA

2 stops41h 28mChina Airlines

Wed 21/118:35DCA - CNX

2 stops27h 50mChina Airlines

Deal found 14/9฿51,782

Sun 21/1209:40BKK - DCA

2 stops26h 16mเดลต้า

Thu 1/106:00DCA - BKK

2 stops29h 20mเดลต้า

Deal found 12/9฿35,737

Sat 25/1007:00BKK - DCA

3 stops39h 29mUnited Airlines

Tue 28/1015:30DCA - BKK

3 stops32h 55mUnited Airlines

Deal found 14/9฿37,576

Sun 7/1200:55BKK - DCA

2 stops22h 42mเดลต้า

Sun 11/106:30DCA - BKK

2 stops30h 15mเดลต้า

Deal found 12/9฿35,737

Fri 24/1002:35BKK - DCA

2 stops31h 50mเดลต้า

Tue 28/1009:45DCA - BKK

2 stops28h 00mเดลต้า

Deal found 14/9฿35,769

Sat 8/1119:45CNX - DCA

3 stops57h 08mMultiple Airlines

Wed 21/118:35DCA - CNX

2 stops28h 00mMultiple Airlines

Deal found 14/9฿46,550

Mon 17/1100:55BKK - DCA

2 stops27h 40mเดลต้า

Sat 29/1106:06DCA - BKK

2 stops29h 14mเดลต้า

Deal found 13/9฿35,769

Last-minute flights from Thailand to Reagan-National
Discover last-minute flight deals from Thailand to Reagan-National. Data last updated 14 September 2025 and is based on user searches.

Fri 19/901:35BKK - DCA

2 stops30h 24mMultiple Airlines

Sat 27/918:59DCA - BKK

2 stops29h 11mMultiple Airlines

Deal found 13/9฿38,845

Sat 20/908:05BKK - DCA

2 stops24h 39mJapan Airlines

Sat 27/906:45DCA - BKK

2 stops36h 05mJapan Airlines

Deal found 13/9฿45,060

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 14 September 2025.

Fri 30/111:25CNX - DCA

2 stops42h 07mMultiple Airlines

Deal found 12/9฿19,470

Sun 15/223:05CNX - DCA

3 stops35h 30mMultiple Airlines

Deal found 14/9฿19,692

Tue 17/210:35CNX - DCA

3 stops46h 20mMultiple Airlines

Deal found 12/9฿20,231

Sat 31/122:50CNX - DCA

3 stops58h 05mMultiple Airlines

Deal found 12/9฿20,770

Sun 19/1002:35BKK - DCA

2 stops31h 50mเดลต้า

Deal found 14/9฿21,436

Sun 19/1022:45BKK - DCA

2 stops54h 14mMultiple Airlines

Deal found 13/9฿21,531

Wed 19/1100:55BKK - DCA

2 stops27h 40mเดลต้า

Deal found 12/9฿21,595

Mon 27/1000:55BKK - DCA

2 stops26h 25mเดลต้า

Deal found 13/9฿21,626

Wed 28/100:15CNX - DCA

2 stops55h 00mเดลต้า

Deal found 13/9฿21,626

Thu 29/111:25CNX - DCA

2 stops40h 50mMultiple Airlines

Deal found 13/9฿21,912

Wed 10/1202:35BKK - DCA

2 stops51h 24mChina Airlines

Deal found 12/9฿22,768

Wed 19/1102:25BKK - DCA

3 stops31h 34mMultiple Airlines

Deal found 12/9฿22,990

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

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 17/11

08:15-10:26

2 stops38h 11m

Washington, D.C. Reagan-National

Sat 29/11

06:00-06:30

2 stops36h 30m

฿35,166

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 26/10

00:55-18:59

2 stops29h 04m

Washington, D.C. Reagan-National

Mon 3/11

06:00-21:30

2 stops27h 30m

฿35,737

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 21/12

09:40-23:56

2 stops26h 16m

Washington, D.C. Reagan-National

Thu 1/1

06:00-23:20

2 stops29h 20m

฿35,737

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 7/12

00:55-11:37

2 stops22h 42m

Washington, D.C. Reagan-National

Sun 11/1

06:30-00:45

2 stops30h 15m

฿35,737

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Fri 24/10

02:35-23:25

2 stops31h 50m

Washington, D.C. Reagan-National

Tue 28/10

09:45-00:45

2 stops28h 00m

฿35,769

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 17/11

00:55-16:35

2 stops27h 40m

Washington, D.C. Reagan-National

Sat 29/11

06:06-23:20

2 stops29h 14m

฿35,769

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 20/12

16:55-15:32

3 stops34h 37m

Washington, D.C. Reagan-National

Thu 1/1

17:59-11:25

2 stops53h 26m

฿36,054

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 25/10

07:00-11:29

3 stops39h 29m

Washington, D.C. Reagan-National

Tue 28/10

15:30-11:25

3 stops32h 55m

฿37,576

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Wed 3/12

17:15-20:00

2 stops38h 45m

Washington, D.C. Reagan-National

Wed 31/12

09:59-11:30

2 stops37h 31m

฿39,162

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 17/2

00:15-15:41

2 stops27h 26m

Washington, D.C. Reagan-National

Sun 22/2

06:10-22:55

2 stops28h 45m

฿43,126

Flights are sorted by cheapest return flights first.

Deals found on 12/9

Showing 1-10 of 32 results

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?

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.

Reviews of airlines servicing Reagan-National

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

8,931 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

United Airlines

7.4

Good

8,931 reviews

United Airlines

7.4

Good

8,931 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

How long is the flight from Thailand to Washington, D.C. Reagan-National Airport?
แอร์แคนาดา, เดลต้า, and EVA Air can get you from Thailand to Washington, D.C. Reagan-National Airport in just under 29h 04m. Your travel time can differ by up to 15h 06m. 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

Alternative routes for Thailand to Reagan-National

Chiang Mai to Dulles Intl flights

Chiang Mai to Baltimore flights

Chiang Mai to Reagan-National flights

Complete your trip

Washington, D.C. Reagan-National Airport car hire

Washington, D.C. car hire

Dupont Circle car hire

Georgetown car hire

Downtown car hire

Capitol Hill car hire

Foggy Bottom - West End car hire

Southwest Waterfront car hire

Columbia Heights car hire

Adams Morgan car hire

Shaw car hire

Anacostia car hire

Top airline flying from Thailand to Reagan-National

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest฿31,731	Average฿33,610	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

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!

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Cheap flights from Thailand to Washington, D.C. Reagan-National Airport from ฿19,470

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 30/1. 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

Keep the following information in mind while searching for Thailand to Reagan-National flight deals. Data was last updated 14 September 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 14 September 2025.

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 14 September 2025.

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

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 14 September 2025.

Reviews of airlines servicing Reagan-National

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.

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?

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.

Top airline flying from Thailand to Reagan-National

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?

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

Can Cheapflights 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?

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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 14 September 2025.