In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 2.6 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

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

Most accurate provider : When it comes to deals on Bangkok Suvarnabhumi Airport-Washington, D.C. Reagan-National Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bangkok Suvarnabhumi Airport-Washington, D.C. Reagan-National Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bangkok Suvarnabhumi Airport-Washington, D.C. Reagan-National Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Bangkok Suvarnabhumi Airport-Washington, D.C. Reagan-National Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bangkok Suvarnabhumi Airport-Washington, D.C. Reagan-National Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Yes. In addition to deals on Suvarnabhumi to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

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

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Suvarnabhumi to Reagan-National.

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

Yes. Cheapflights offers flight deals from Suvarnabhumi 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.

$586+ Flights from Bangkok Suvarnabhumi Airport to Washington, D.C. Reagan-National Airport

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Cheap flight deals from Suvarnabhumi to Reagan-National

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 1 star
Round-trip from	$974 (SmartFares)
One-way from	$586 (China Airlines)
Popular in	August
Cheapest in	October
Average price	$1,275

Provider with most accurate pricing for Bangkok Suvarnabhumi-Washington, D.C. Reagan-National flight deals.

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Provider most trusted by Cheapflights users for Bangkok Suvarnabhumi-Washington, D.C. Reagan-National flights.

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From Bangkok Suvarnabhumi to Washington, D.C. Reagan-National

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One-way flight from Bangkok Suvarnabhumi to Washington, D.C. Reagan-National

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Highest demand for flights based on searches. 1% potential increase in price ($23 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).

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Average for round-trip flights in January 2026

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Find flight deals from Suvarnabhumi to Reagan-National

Cheapest flights from Suvarnabhumi to Reagan-National
Explore the most affordable flight options available from Suvarnabhumi to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 12, 2026.

Tue 2/242:15 amBKK - DCA

2 stops29h 50mMultiple Airlines

Wed 3/49:59 amDCA - BKK

2 stops37h 11mMultiple Airlines

Deal found 1/11

$974

Mon 2/92:15 amBKK - DCA

2 stops29h 45mMultiple Airlines

Tue 2/179:59 amDCA - BKK

2 stops36h 46mMultiple Airlines

Deal found 1/11

$990

Tue 3/242:15 amBKK - DCA

2 stops26h 26mMultiple Airlines

Tue 5/129:59 amDCA - BKK

2 stops37h 26mMultiple Airlines

Deal found 1/11

$993

Sun 2/85:15 pmBKK - DCA

2 stops38h 45mMultiple Airlines

Sun 2/159:59 amDCA - BKK

2 stops36h 46mMultiple Airlines

Deal found 1/11

$1,004

Thu 1/222:15 amBKK - DCA

2 stops29h 45mEVA Air

Thu 1/299:59 amDCA - BKK

2 stops36h 46mEVA Air

Deal found 1/11

$1,010

Thu 3/52:15 amBKK - DCA

2 stops29h 50mMultiple Airlines

Sat 3/216:41 pmDCA - BKK

2 stops29h 29mMultiple Airlines

Deal found 1/10

$1,018

Fri 3/62:15 amBKK - DCA

2 stops29h 50mMultiple Airlines

Sat 3/216:41 pmDCA - BKK

2 stops29h 29mMultiple Airlines

Deal found 1/10

$1,024

Tue 3/2412:45 pmBKK - DCA

2 stops39h 56mEVA Air

Tue 4/79:59 amDCA - BKK

2 stops37h 56mEVA Air

Deal found 1/12

$1,030

Mon 3/165:15 pmBKK - DCA

2 stops37h 50mMultiple Airlines

Wed 4/89:59 amDCA - BKK

2 stops37h 56mMultiple Airlines

Deal found 1/10

$1,039

Sun 2/812:45 pmBKK - DCA

2 stops43h 15mEVA Air

Sun 2/159:59 amDCA - BKK

2 stops37h 11mEVA Air

Deal found 1/11

$1,040

Sat 2/282:15 amBKK - DCA

2 stops29h 50mEVA Air

Tue 4/289:59 amDCA - BKK

2 stops37h 26mEVA Air

Deal found 1/10

$1,043

Tue 3/32:15 amBKK - DCA

2 stops27h 44mMultiple Airlines

Tue 4/76:41 pmDCA - BKK

2 stops28h 44mMultiple Airlines

Deal found 1/10

$1,055

Best flights from Suvarnabhumi to Reagan-National
Discover carefully curated flight deals from Suvarnabhumi to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 12, 2026.

Sun 2/85:15 pmBKK - DCA

2 stops38h 45mMultiple Airlines

Sun 2/159:59 amDCA - BKK

2 stops36h 46mMultiple Airlines

Deal found 1/11

$1,004

Thu 1/222:15 amBKK - DCA

2 stops29h 45mEVA Air

Thu 1/299:59 amDCA - BKK

2 stops36h 46mEVA Air

Deal found 1/11

$1,010

Fri 3/67:10 amBKK - DCA

2 stops26h 35mUnited Airlines

Sat 3/217:30 amDCA - BKK

3 stops40h 55mUnited Airlines

Deal found 1/10

$1,062

Sat 6/201:20 amBKK - DCA

2 stops31h 28mAir Canada

Wed 7/299:40 amDCA - BKK

2 stops32h 25mAir Canada

Deal found 1/10

$1,154

Tue 3/2412:45 pmBKK - DCA

2 stops39h 56mEVA Air

Tue 4/79:59 amDCA - BKK

2 stops37h 56mEVA Air

Deal found 1/12

$1,030

Tue 3/32:15 amBKK - DCA

2 stops27h 44mMultiple Airlines

Thu 5/79:59 amDCA - BKK

2 stops37h 26mMultiple Airlines

Deal found 1/10

$1,065

Sun 2/84:55 pmBKK - DCA

3 stops30h 01mUnited Airlines

Sun 2/156:00 amDCA - BKK

2 stops30h 20mUnited Airlines

Deal found 1/11

$1,077

Sun 2/812:45 pmBKK - DCA

2 stops43h 15mEVA Air

Sun 2/159:59 amDCA - BKK

2 stops37h 11mEVA Air

Deal found 1/11

$1,040

Sun 3/295:15 pmBKK - DCA

2 stops37h 45mMultiple Airlines

Sat 5/99:59 amDCA - BKK

2 stops37h 56mMultiple Airlines

Deal found 1/10

$1,106

Sat 3/77:10 amBKK - DCA

2 stops26h 35mUnited Airlines

Sat 3/214:59 pmDCA - BKK

3 stops31h 26mUnited Airlines

Deal found 1/10

$1,125

Wed 2/257:10 amBKK - DCA

2 stops26h 29mUnited Airlines

Wed 3/41:00 pmDCA - BKK

3 stops34h 25mUnited Airlines

Deal found 1/11

$1,193

Last-minute flights from Suvarnabhumi to Reagan-National
Discover last-minute flight deals from Suvarnabhumi to Reagan-National. Data last updated January 12, 2026 and is based on user searches.

Thu 1/222:15 amBKK - DCA

2 stops29h 45mEVA Air

Thu 1/299:59 amDCA - BKK

2 stops36h 46mEVA Air

Deal found 1/11

$1,010

Tue 1/272:25 pmBKK - DCA

2 stops33h 33mANA

Tue 2/178:20 amDCA - BKK

2 stops28h 00mANA

Deal found 1/11

$4,815

Thu 1/292:25 pmBKK - DCA

2 stops33h 33mANA

Fri 2/132:00 pmDCA - BKK

2 stops28h 30mANA

Deal found 1/9

$4,837

Sun 2/85:15 pmBKK - DCA

2 stops38h 45mMultiple Airlines

Sun 2/159:59 amDCA - BKK

2 stops36h 46mMultiple Airlines

Deal found 1/11

$1,004

Sun 2/812:45 pmBKK - DCA

2 stops43h 15mEVA Air

Sun 2/159:59 amDCA - BKK

2 stops37h 11mEVA Air

Deal found 1/11

$1,040

Sun 2/84:55 pmBKK - DCA

3 stops30h 01mUnited Airlines

Sun 2/156:00 amDCA - BKK

2 stops30h 20mUnited Airlines

Deal found 1/11

$1,077

Mon 2/92:15 amBKK - DCA

2 stops29h 45mMultiple Airlines

Tue 2/179:59 amDCA - BKK

2 stops36h 46mMultiple Airlines

Deal found 1/11

$990

Mon 2/1611:15 pmBKK - DCA

2 stops29h 49mDelta

Sun 3/226:00 amDCA - BKK

2 stops28h 30mDelta

Deal found 1/9

$1,254

Tue 2/242:15 amBKK - DCA

2 stops29h 50mMultiple Airlines

Wed 3/49:59 amDCA - BKK

2 stops37h 11mMultiple Airlines

Deal found 1/11

$974

Wed 2/257:10 amBKK - DCA

2 stops26h 29mUnited Airlines

Wed 3/41:00 pmDCA - BKK

3 stops34h 25mUnited Airlines

Deal found 1/11

$1,193

One-way flights from Suvarnabhumi to Reagan-National
Search for one-way flight options from Suvarnabhumi to Reagan-National. Find affordable one-way fares based on user searches. Data last updated January 12, 2026.

Tue 2/102:05 pmBKK - DCA

2 stops38h 04mMultiple Airlines

Deal found 1/10

$586

Wed 1/215:40 pmBKK - DCA

3 stops59h 19mMultiple Airlines

Deal found 1/9

$593

Thu 3/512:15 pmBKK - DCA

2 stops43h 50mMultiple Airlines

Deal found 1/10

$594

Fri 6/510:50 amBKK - DCA

3 stops38h 00mMultiple Airlines

Deal found 1/10

$605

Thu 2/265:50 pmBKK - DCA

3 stops55h 10mMultiple Airlines

Deal found 1/10

$613

Tue 3/177:15 amBKK - DCA

2 stops40h 04mAir Canada

Deal found 1/12

$622

Thu 1/225:50 pmBKK - DCA

2 stops36h 06mMultiple Airlines

Deal found 1/11

$623

Fri 1/232:05 pmBKK - DCA

2 stops39h 51mMultiple Airlines

Deal found 1/11

$625

Mon 3/167:15 amBKK - DCA

2 stops50h 20mAir Canada

Deal found 1/12

$630

Wed 4/157:05 amBKK - DCA

2 stops47h 48mAir Canada

Deal found 1/9

$633

Tue 2/242:25 amBKK - DCA

2 stops51h 34mMultiple Airlines

Deal found 1/11

$639

Wed 1/218:00 amBKK - DCA

2 stops26h 35mAir Canada

Deal found 1/9

$642

Cheapflights Fare Finder

Use the filters below to find and compare flights from Bangkok Suvarnabhumi Airport 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

Sun 2/8

5:15 pm-8:00 pm

2 stops38h 45m

Washington, D.C. Reagan-National

Sun 2/15

9:59 am-10:45 am

2 stops36h 46m

$1,004

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 1/22

2:15 am-8:00 pm

2 stops29h 45m

Washington, D.C. Reagan-National

Thu 1/29

9:59 am-10:45 am

2 stops36h 46m

$1,010

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 3/24

12:45 pm-5:41 pm

2 stops39h 56m

Washington, D.C. Reagan-National

Tue 4/7

9:59 am-10:55 am

2 stops37h 56m

$1,030

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 2/8

12:45 pm-8:00 pm

2 stops43h 15m

Washington, D.C. Reagan-National

Sun 2/15

9:59 am-11:10 am

2 stops37h 11m

$1,040

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Fri 3/6

7:10 am-9:45 pm

2 stops26h 35m

Washington, D.C. Reagan-National

Sat 3/21

7:30 am-11:25 am

3 stops40h 55m

$1,062

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 3/3

2:15 am-5:59 pm

2 stops27h 44m

Washington, D.C. Reagan-National

Thu 5/7

9:59 am-10:25 am

2 stops37h 26m

$1,065

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 2/8

4:55 pm-10:56 am

3 stops30h 01m

Washington, D.C. Reagan-National

Sun 2/15

6:00 am-12:20 am

2 stops30h 20m

$1,077

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 3/29

5:15 pm-8:00 pm

2 stops37h 45m

Washington, D.C. Reagan-National

Sat 5/9

9:59 am-10:55 am

2 stops37h 56m

$1,106

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 3/7

7:10 am-9:45 pm

2 stops26h 35m

Washington, D.C. Reagan-National

Sat 3/21

4:59 pm-11:25 am

3 stops31h 26m

$1,125

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 6/20

1:20 am-9:48 pm

2 stops31h 28m

Washington, D.C. Reagan-National

Wed 7/29

9:40 am-5:05 am

2 stops32h 25m

$1,154

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/10

Showing 1-10 of 20 results

Most accurate provider: When it comes to deals on Bangkok Suvarnabhumi Airport-Washington, D.C. Reagan-National Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bangkok Suvarnabhumi Airport-Washington, D.C. Reagan-National Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bangkok Suvarnabhumi Airport-Washington, D.C. Reagan-National Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Bangkok Suvarnabhumi Airport-Washington, D.C. Reagan-National Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bangkok Suvarnabhumi Airport-Washington, D.C. Reagan-National Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Suvarnabhumi with our price prediction graph.

Estimated round-trip 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.

Reviews of airlines servicing Reagan-National

Read reviews from past customers who have flown United Airlines from Bangkok Suvarnabhumi Airport to Washington, D.C. Reagan-National Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,143 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

United Airlines

7.4

Good

9,143 reviews

United Airlines

7.4

Good

9,143 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

How long is the flight from Bangkok Suvarnabhumi Airport to Washington, D.C. Reagan-National Airport?
Departing from Bangkok Suvarnabhumi Airport to Washington, D.C. Reagan-National Airport will take you 26h 35m. Airlines will cover a distance of 8797 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What is the cheapest airline to fly from Bangkok Suvarnabhumi Airport to Washington, D.C. Reagan-National Airport round-trip?
Cheapflights users have booked flights from Bangkok Suvarnabhumi Airport to Washington, D.C. Reagan-National Airport round-trip from $1,038.
Can I find deals for flights from Suvarnabhumi to Reagan-National that include hotel bookings?
Yes. In addition to deals on Suvarnabhumi to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Suvarnabhumi to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Suvarnabhumi to Reagan-National.
Can I find deals for business class flights from Suvarnabhumi to Reagan-National?
Yes. Cheapflights offers flight deals from Suvarnabhumi 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.

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Top airline flying from Suvarnabhumi to Reagan-National

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,038	Average$1,054	FlexibilityNo cancel fee	On-time69%

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$586+ Cheap flights from Suvarnabhumi (BKK) to Reagan-National (DCA)

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Suvarnabhumi to Reagan-National with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Suvarnabhumi to Reagan-National

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Suvarnabhumi to Reagan-National

Cheapest flights from Suvarnabhumi to Reagan-NationalExplore the most affordable flight options available from Suvarnabhumi to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 12, 2026.

Explore the most affordable flight options available from Suvarnabhumi to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 12, 2026.

Cheapflights Fare Finder

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

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

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Suvarnabhumi with our price prediction graph.

Reviews of airlines servicing Reagan-National

Related info for your journey

Find useful and relevant information for your journey from Suvarnabhumi 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 Bangkok Suvarnabhumi Airport to Washington, D.C. Reagan-National Airport?

What is the cheapest airline to fly from Bangkok Suvarnabhumi Airport to Washington, D.C. Reagan-National Airport round-trip?

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

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

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

Traveling to a place near Washington, D.C. Reagan-National Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Suvarnabhumi to Reagan-National

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Suvarnabhumi to Reagan-National

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Cheapest flights from Suvarnabhumi to Reagan-National
Explore the most affordable flight options available from Suvarnabhumi to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 12, 2026.