In terms of precipitation, rainfall in Singapore ranges from 5.9 - 10.6 inches per month. December is typically the wettest month, when rainfall can reach 10.6 in. July is typically the driest time to visit Singapore when rainfall is around 5.9 in.

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 78.8 F).

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

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

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

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

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

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

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

Yes. Cheapflights offers flight deals from Reagan-National to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$460+ Flights from Washington, D.C. Reagan-National Airport to Singapore

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Cheap flight deals from Reagan-National to Singapore

Cheapest flights from Reagan-National to Singapore
Explore the most affordable flight options available from Reagan-National to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 20, 2025.

Wed 12/245:59 pmDCA - SIN

1 stop37h 16mUnited Airlines

Wed 1/2110:20 pmSIN - DCA

1 stop31h 32mUnited Airlines

Deal found 12/19

$1,347

Wed 12/245:59 pmDCA - SIN

1 stop25h 01mUnited Airlines

Thu 1/810:10 amSIN - DCA

2 stops26h 49mUnited Airlines

Deal found 12/20

$1,429

Tue 12/235:59 pmDCA - SIN

1 stop25h 01mUnited Airlines

Thu 12/2510:20 pmSIN - DCA

1 stop31h 37mUnited Airlines

Deal found 12/19

$1,476

Tue 12/235:59 pmDCA - SIN

1 stop37h 16mUnited Airlines

Sat 1/1010:20 pmSIN - DCA

2 stops28h 29mUnited Airlines

Deal found 12/20

$1,589

Fri 12/267:00 amDCA - SIN

1 stop36h 00mUnited Airlines

Tue 1/610:20 pmSIN - DCA

2 stops24h 38mUnited Airlines

Deal found 12/19

$1,727

Sun 12/215:00 pmDCA - SIN

2 stops38h 15mUnited Airlines

Wed 12/3110:10 amSIN - DCA

1 stop24h 33mUnited Airlines

Deal found 12/18

$1,733

Mon 12/223:30 pmDCA - SIN

2 stops27h 30mUnited Airlines

Tue 12/3010:20 pmSIN - DCA

2 stops26h 09mUnited Airlines

Deal found 12/18

$1,737

Best flights from Reagan-National to Singapore
Discover carefully curated flight deals from Reagan-National to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 20, 2025.

Thu 2/127:30 amDCA - SIN

2 stops34h 25mUnited Airlines

Sat 2/2810:20 pmSIN - DCA

2 stops26h 15mUnited Airlines

Deal found 12/19

$1,184

Fri 5/296:00 amDCA - SIN

2 stops35h 15mAir Canada

Mon 6/1510:50 pmSIN - DCA

2 stops47h 29mAir Canada

Deal found 12/20

$1,212

Fri 4/2411:54 amDCA - SIN

2 stops29h 36mCathay Pacific

Thu 4/301:50 amSIN - DCA

2 stops32h 25mCathay Pacific

Deal found 12/20

$1,307

Thu 1/299:59 amDCA - SIN

2 stops36h 56mMultiple Airlines

Thu 2/198:15 pmSIN - DCA

2 stops33h 37mMultiple Airlines

Deal found 12/20

$1,345

Thu 1/228:25 amDCA - SIN

2 stops33h 30mUnited Airlines

Sun 1/2510:10 amSIN - DCA

1 stop24h 42mUnited Airlines

Deal found 12/19

$1,184

Wed 4/89:40 amDCA - SIN

2 stops27h 05mAir Canada

Fri 4/246:15 amSIN - DCA

2 stops25h 38mAir Canada

Deal found 12/19

$1,259

Sun 2/15:59 pmDCA - SIN

1 stop25h 01mUnited Airlines

Sun 2/810:20 pmSIN - DCA

2 stops26h 09mUnited Airlines

Deal found 12/20

$1,225

Sun 2/154:11 pmDCA - SIN

2 stops26h 49mUnited Airlines

Sat 2/2810:20 pmSIN - DCA

2 stops23h 31mUnited Airlines

Deal found 12/19

$1,229

Thu 1/85:59 pmDCA - SIN

1 stop25h 01mUnited Airlines

Wed 1/2110:10 amSIN - DCA

1 stop24h 42mUnited Airlines

Deal found 12/18

$1,322

Last-minute flights from Reagan-National to Singapore
Discover last-minute flight deals from Reagan-National to Singapore. Data last updated December 20, 2025 and is based on user searches.

Wed 12/245:59 pmDCA - SIN

1 stop37h 16mUnited Airlines

Wed 1/2110:20 pmSIN - DCA

1 stop31h 32mUnited Airlines

Deal found 12/19

$1,347

Thu 1/85:59 pmDCA - SIN

1 stop25h 01mUnited Airlines

Wed 1/2110:20 pmSIN - DCA

2 stops26h 09mUnited Airlines

Deal found 12/18

$1,322

Fri 1/96:56 pmDCA - SIN

2 stops54h 34mEVA Air

Mon 2/163:45 pmSIN - DCA

2 stops39h 14mEVA Air

Deal found 12/20

$1,295

Sun 1/117:00 amDCA - SIN

2 stops28h 55mUnited Airlines

Sat 1/3110:45 amSIN - DCA

1 stop24h 07mUnited Airlines

Deal found 12/19

$1,237

Sat 1/177:30 amDCA - SIN

2 stops28h 20mJapan Airlines

Fri 1/238:15 amSIN - DCA

2 stops25h 29mJapan Airlines

Deal found 12/18

$1,241

Sun 1/186:59 amDCA - SIN

2 stops28h 51mJapan Airlines

Mon 2/28:15 amSIN - DCA

2 stops25h 29mJapan Airlines

Deal found 12/17

$1,193

Mon 1/199:35 amDCA - SIN

2 stops31h 05mCathay Pacific

Thu 1/291:25 amSIN - DCA

2 stops28h 43mCathay Pacific

Deal found 12/18

$1,284

Mon 1/196:59 amDCA - SIN

2 stops48h 26mKorean Air

Sat 1/241:35 amSIN - DCA

2 stops27h 54mKorean Air

Deal found 12/18

$1,402

Tue 1/2012:55 pmDCA - SIN

2 stops29h 05mAir Canada

Sun 1/258:50 amSIN - DCA

2 stops40h 29mAir Canada

Deal found 12/18

$1,201

Thu 1/228:25 amDCA - SIN

2 stops33h 30mUnited Airlines

Sun 1/2510:10 amSIN - DCA

1 stop24h 42mUnited Airlines

Deal found 12/19

$1,184

Fri 1/239:13 pmDCA - SIN

2 stops43h 27mCathay Pacific

Sat 2/78:15 pmSIN - DCA

2 stops33h 53mCathay Pacific

Deal found 12/20

$1,274

Thu 1/299:59 amDCA - SIN

2 stops36h 56mMultiple Airlines

Thu 2/198:15 pmSIN - DCA

2 stops33h 37mMultiple Airlines

Deal found 12/20

$1,345

One-way flights from Reagan-National to Singapore
Search for one-way flight options from Reagan-National to Singapore. Find affordable one-way fares based on user searches. Data last updated December 20, 2025.

Sun 1/256:00 pmDCA - SIN

3 stops40h 40mMultiple Airlines

Deal found 12/18

$460

Tue 1/208:55 pmDCA - SIN

2 stops27h 10mCathay Pacific

Deal found 12/19

$497

Fri 2/136:00 pmDCA - SIN

2 stops58h 45mMultiple Airlines

Deal found 12/19

$507

Tue 2/36:00 amDCA - SIN

2 stops38h 15mMultiple Airlines

Deal found 12/20

$527

Tue 2/106:00 amDCA - SIN

2 stops38h 15mMultiple Airlines

Deal found 12/18

$532

Thu 1/229:35 amDCA - SIN

2 stops31h 05mMultiple Airlines

Deal found 12/19

$538

Mon 1/199:35 amDCA - SIN

2 stops31h 05mCathay Pacific

Deal found 12/18

$546

Thu 1/296:00 amDCA - SIN

2 stops26h 45mMultiple Airlines

Deal found 12/18

$560

Mon 2/25:30 pmDCA - SIN

2 stops29h 25mCathay Pacific

Deal found 12/17

$563

Sat 1/319:59 amDCA - SIN

2 stops38h 06mMultiple Airlines

Deal found 12/19

$570

Tue 2/39:13 pmDCA - SIN

2 stops49h 42mCathay Pacific

Deal found 12/18

$576

Find flight deals from Reagan-National to Singapore

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,184 (United Airlines)
One-way from	$460 (Kiwi.com)
Popular in	December
Cheapest in	August
Average price	$1,984

Provider with most accurate pricing for Washington, D.C. (WAS)-Singapore Changi flight deals.

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From Washington, D.C. Reagan-National to Singapore

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

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($241 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($71 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 2/12

7:30 am-6:55 am

2 stops34h 25m

Singapore Changi

Sat 2/28

10:20 pm-11:35 am

2 stops26h 15m

$1,184

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 1/22

8:25 am-6:55 am

2 stops33h 30m

Singapore Changi

Sun 1/25

10:10 am-9:52 pm

1 stop24h 42m

$1,184

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Fri 5/29

6:00 am-5:15 am

2 stops35h 15m

Singapore Changi

Mon 6/15

10:50 pm-10:19 am

2 stops47h 29m

$1,212

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sun 2/1

5:59 pm-8:00 am

1 stop25h 01m

Singapore Changi

Sun 2/8

10:20 pm-11:29 am

2 stops26h 09m

$1,225

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sun 2/15

4:11 pm-8:00 am

2 stops26h 49m

Singapore Changi

Sat 2/28

10:20 pm-8:51 am

2 stops23h 31m

$1,229

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 4/8

9:40 am-12:45 am

2 stops27h 05m

Singapore Changi

Fri 4/24

6:15 am-7:53 pm

2 stops25h 38m

$1,259

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Fri 4/24

11:54 am-5:30 am

2 stops29h 36m

Singapore Changi

Thu 4/30

1:50 am-10:15 pm

2 stops32h 25m

$1,307

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 1/8

5:59 pm-8:00 am

1 stop25h 01m

Singapore Changi

Wed 1/21

10:10 am-9:52 pm

1 stop24h 42m

$1,322

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 1/29

9:59 am-11:55 am

2 stops36h 56m

Singapore Changi

Thu 2/19

8:15 pm-4:52 pm

2 stops33h 37m

$1,345

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sun 1/25

6:00 pm-11:40 pm

3 stops40h 40m

$460

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 19 results

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

Have a flexible travel schedule? Discover the best time to fly to Singapore from Reagan-National 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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Singapore

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

Related info for your journey

How long is the flight from Washington, D.C. Reagan-National Airport to Singapore?
A quick flight from Washington, D.C. Reagan-National Airport to Singapore can take about 34h 25m. United Airlines provides one of the quickest options available for as low as $1,184. There are 9651 mi between Washington, D.C. Reagan-National Airport and Singapore. This flight may include one or multiple stops.
Can I find deals for flights from Reagan-National to Singapore that include hotel bookings?
Yes. In addition to deals on Reagan-National to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Reagan-National to Singapore?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Singapore.
Can I find deals for business class flights from Reagan-National to Singapore?
Yes. Cheapflights offers flight deals from Reagan-National to Singapore 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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$460+ Cheap flights from Reagan-National (DCA) to Singapore

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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Reagan-National to Singapore with Cheapflights

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Cheap flight deals from Reagan-National to Singapore

Cheapest flights from Reagan-National to SingaporeExplore the most affordable flight options available from Reagan-National to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 20, 2025.

Explore the most affordable flight options available from Reagan-National to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 20, 2025.

Find flight deals from Reagan-National to Singapore

Keep the following information in mind while searching for Reagan-National to Singapore flight deals. Data was last updated December 20, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Singapore

Related info for your journey

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

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

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

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

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Cheapest flights from Reagan-National to Singapore
Explore the most affordable flight options available from Reagan-National to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 20, 2025.