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Cheap flights from Washington, D.C. Reagan-National Airport to Thailand from $461

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to Thailand departing on 1/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Thailand

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:00 am - 7:20 am
DCA
-
HKT
38h 20m2 stops
Multiple Airlines Logo
8:45 pm - 10:57 pm
HKT
-
DCA
37h 12m2 stops
$910Multiple Airlines
Sun, Apr 12 - Thu, Apr 16
Delta Logo
7:35 am - 11:20 pm
DCA
-
BKK
27h 45m2 stops
Delta Logo
2:05 am - 10:42 pm
BKK
-
DCA
31h 37m2 stops
$928Delta
Mon, Mar 2 - Sun, Mar 8
Multiple Airlines Logo
6:05 am - 7:20 am
DCA
-
HKT
38h 15m2 stops
Multiple Airlines Logo
8:20 am - 10:57 pm
HKT
-
DCA
49h 37m2 stops
$932Multiple Airlines
Thu, Apr 16 - Sat, Apr 25
Korean Air Logo
6:59 am - 11:20 pm
DCA
-
BKK
28h 21m2 stops
Korean Air Logo
9:30 pm - 1:44 pm
BKK
-
DCA
27h 14m2 stops
$934Korean Air
Tue, Mar 3 - Mon, Mar 9
Korean Air Logo
6:59 am - 12:55 am
DCA
-
BKK
29h 56m2 stops
Korean Air Logo
11:15 pm - 1:50 pm
BKK
-
DCA
26h 35m2 stops
$935Korean Air
Thu, Feb 5 - Wed, Feb 11
United Airlines Logo
10:30 am - 5:10 am
DCA
-
BKK
30h 40m2 stops
United Airlines Logo
7:10 am - 11:50 pm
BKK
-
DCA
27h 40m2 stops
$936United Airlines
Wed, Mar 4 - Wed, Mar 11
ANA Logo
2:00 pm - 6:30 am
DCA
-
BKK
28h 30m2 stops
ANA Logo
2:25 pm - 11:58 am
BKK
-
DCA
57h 33m2 stops
$943ANA
Mon, Jan 19 - Mon, Jan 26
United Airlines Logo
11:55 am - 9:45 am
DCA
-
BKK
34h 50m3 stops
United Airlines Logo
3:40 pm - 3:55 pm
BKK
-
DCA
35h 15m3 stops
$944United Airlines
Mon, Apr 27 - Wed, May 6
Cathay Pacific Logo
9:35 am - 11:20 am
DCA
-
HKT
37h 45m2 stops
Cathay Pacific Logo
6:35 pm - 6:59 pm
HKT
-
DCA
36h 24m2 stops
$1,020Cathay Pacific
Wed, Feb 4 - Wed, Feb 11
Cathay Pacific Logo
9:33 am - 7:35 pm
DCA
-
USM
46h 02m2 stops
Cathay Pacific Logo
11:40 am - 6:44 pm
USM
-
DCA
43h 04m2 stops
$1,775Cathay Pacific
Sun, Jan 18 - Sun, Jan 25

Korean Air flights from Washington, D.C. Reagan-National Airport to Thailand

Our best Korean Air deals on Washington, D.C. Reagan-National Airport to Thailand flight tickets
Korean Air
Jan 26
DCA6:59 amWashington, D.C. Reagan-National
28h 21m
2 stops
BKK11:20 pmBangkok Suvarnabhumi
Feb 2
BKK9:30 pmBangkok Suvarnabhumi
28h 23m
2 stops
DCA1:53 pmWashington, D.C. Reagan-National
$913
Find similar
Korean Air
Jan 18
DCA5:00 pmWashington, D.C. Reagan-National
43h 45m
2 stops
BKK12:45 amBangkok Suvarnabhumi
Feb 1
BKK2:05 amBangkok Suvarnabhumi
50h 24m
2 stops
DCA4:29 pmWashington, D.C. Reagan-National
$927
Find similar
Korean Air
Feb 3
DCA6:59 amWashington, D.C. Reagan-National
29h 56m
2 stops
BKK12:55 amBangkok Suvarnabhumi
Feb 10
BKK11:15 pmBangkok Suvarnabhumi
26h 38m
2 stops
DCA1:53 pmWashington, D.C. Reagan-National
$933
Find similar

United Airlines flights from Washington, D.C. Reagan-National Airport to Thailand

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to Thailand flight tickets
United Airlines
Mar 4
DCA10:30 amWashington, D.C. Reagan-National
30h 40m
2 stops
BKK5:10 amBangkok Suvarnabhumi
Mar 11
BKK7:10 amBangkok Suvarnabhumi
27h 40m
2 stops
DCA11:50 pmWashington, D.C. Reagan-National
$936
Find similar
United Airlines
Mar 9
DCA12:00 pmWashington, D.C. Reagan-National
36h 25m
3 stops
BKK11:25 amBangkok Suvarnabhumi
Mar 23
BKK4:55 pmBangkok Suvarnabhumi
34h 04m
3 stops
DCA3:59 pmWashington, D.C. Reagan-National
$944
Find similar
United Airlines
Apr 6
DCA8:20 amWashington, D.C. Reagan-National
33h 15m
2 stops
BKK4:35 amBangkok Suvarnabhumi
May 4
BKK3:40 pmBangkok Suvarnabhumi
35h 15m
3 stops
DCA3:55 pmWashington, D.C. Reagan-National
$945
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport to Thailand 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, momondo users made 832,500 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Thailand that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Phuket City

DCA - HKT

DCAHKT

Washington, D.C. Reagan-National

Sun 4/12

6:00 am-7:20 am

2 stops38h 20m

Phuket City

Thu 4/16

8:45 pm-10:57 pm

2 stops37h 12m

$910

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 3/2

7:35 am-11:20 pm

2 stops27h 45m

Bangkok Suvarnabhumi

Sun 3/8

2:05 am-10:42 pm

2 stops31h 37m

$928

Washington, D.C.Phuket City

DCA - HKT

DCAHKT

Washington, D.C. Reagan-National

Thu 4/16

6:05 am-7:20 am

2 stops38h 15m

Phuket City

Sat 4/25

8:20 am-10:57 pm

2 stops49h 37m

$932

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 3/3

6:59 am-11:20 pm

2 stops28h 21m

Bangkok Suvarnabhumi

Mon 3/9

9:30 pm-1:44 pm

2 stops27h 14m

$934

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Thu 2/5

6:59 am-12:55 am

2 stops29h 56m

Bangkok Suvarnabhumi

Wed 2/11

11:15 pm-1:50 pm

2 stops26h 35m

$935

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Wed 3/4

10:30 am-5:10 am

2 stops30h 40m

Bangkok Suvarnabhumi

Wed 3/11

7:10 am-11:50 pm

2 stops27h 40m

$936

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 1/19

2:00 pm-6:30 am

2 stops28h 30m

Bangkok Suvarnabhumi

Mon 1/26

2:25 pm-11:58 am

2 stops57h 33m

$943

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 4/27

11:55 am-9:45 am

3 stops34h 50m

Bangkok Suvarnabhumi

Wed 5/6

3:40 pm-3:55 pm

3 stops35h 15m

$944

Washington, D.C.Phuket City

DCA - HKT

DCAHKT

Washington, D.C. Reagan-National

Wed 2/4

9:35 am-11:20 am

2 stops37h 45m

Phuket City

Wed 2/11

6:35 pm-6:59 pm

2 stops36h 24m

$1,020

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Sun 1/18

9:33 am-7:35 pm

2 stops46h 02m

Ko Samui

Sun 1/25

11:40 am-6:44 pm

2 stops43h 04m

$1,775

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Thailand from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to Thailand

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Thailand?

The month of February is, on average, the cheapest month to fly to Thailand from Washington, D.C. Reagan-National Airport, with most prices found around $993. If you are unable to visit Thailand during the month of February, then departing from Washington, D.C. Reagan-National Airport during the month January is also very affordable. Most momondo users find prices during this month for around $1,042.

What is the cheapest day to depart on your flight to Thailand?

The cheapest day to depart on your flight to Thailand is on a Tuesday when prices can be found for as low as $1,068. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Thailand is Sunday, with ticket prices averaging around $1,565.

What is the cheapest time of day to depart on your flight to Thailand?

Flying to Thailand from Washington, D.C. Reagan-National Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,203 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Thailand is at noon when prices are around $1,680.

Cheap Washington, D.C. Reagan-National Airport to Thailand flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Thailand

Fastest flight time

26h 05m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Thailand takes 26h 05m
There are no direct flights from Washington, D.C. Reagan-National Airport to Thailand. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Thailand.
Search flight deals

  • When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Thailand?

    Prices for flights from Washington, D.C. Reagan-National Airport to Thailand are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Thailand?

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Thailand?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Reagan-National Airport to Thailand.

  • What documentation or ID do you need to fly to Thailand?

    The required travel and health documents for your Thailand trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Thailand. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Washington, D.C. Reagan-National Airport to Thailand

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Thailand with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $216Free CancellationRating
7.4
9,105 reviews
Search United Airlines flights
Korean AirPriceFrom $857Free CancellationRating
8.4
1,185 reviews
Search Korean Air flights
DeltaPriceFrom $977Free CancellationRating
7.9
8,014 reviews
Search Delta flights
Cathay PacificPriceFrom $1,049Free CancellationRating
7.6
1,103 reviews
Search Cathay Pacific flights
Air CanadaPriceFrom $1,206Free CancellationRating
7.1
10,551 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Thailand?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Thailand. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to Thailand with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Thailand from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Thailand?

momondo helps you find the best flight between Washington, D.C. and Thailand by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to Thailand right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Thailand flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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