What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Singapore?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Singapore (average of $1,002). Flying from Washington, D.C. Reagan-National Airport to Singapore in December is currently the most expensive (average of $1,665). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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).

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Singapore?

To save up to 36% on this flight, we recommend booking at least 51 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Washington, D.C. Reagan-National Airport to Singapore from $909 1-2 weeks out and tickets from $957 for flights departing within the next 72 hours.

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

August is one of the best times of the year to fly to Singapore from Washington, D.C. Reagan-National Airport. Prices for August average $1,175 per person but you can even find prices for as low as $675. The most expensive prices can be found in the month of December. Opting for a August flight can save you 54% on your journey compared to booking in December

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.

$444+ Cheap Flights from Washington, D.C. Reagan-National Airport to Singapore

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Cheap flight deals from Reagan-National to Singapore

Round-trip from	$986 (oojo)
One-way from	$444 (Kiwi.com)
Popular in	December
Cheapest in	August
Average price	$1,191

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

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

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Highest demand for flights based on searches. 11% potential increase in price ($156 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($59 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find 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 September 14, 2025.

Wed 10/226:59 pmDCA - SIN

1 stop36h 11mSingapore Airlines

Wed 10/298:45 pmSIN - DCA

1 stop35h 15mSingapore Airlines

Deal found 9/12

$986

Sun 11/236:00 amDCA - SIN

2 stops36h 00mAir Canada

Thu 11/278:50 amSIN - DCA

2 stops40h 29mAir Canada

Deal found 9/14

$1,069

Sun 9/149:40 amDCA - SIN

2 stops33h 25mAir Canada

Tue 9/239:10 amSIN - DCA

2 stops35h 49mAir Canada

Deal found 9/13

$1,080

Tue 10/286:58 pmDCA - SIN

1 stop36h 07mMultiple Airlines

Tue 11/49:00 amSIN - DCA

1 stop25h 59mMultiple Airlines

Deal found 9/12

$1,084

Tue 11/116:00 amDCA - SIN

2 stops29h 55mAir Canada

Tue 11/188:50 amSIN - DCA

2 stops38h 36mAir Canada

Deal found 9/13

$1,086

Sun 11/2311:05 amDCA - SIN

2 stops30h 55mAir Canada

Fri 11/288:50 amSIN - DCA

2 stops26h 06mAir Canada

Deal found 9/13

$1,087

Sat 11/15:00 pmDCA - SIN

1 stop36h 45mSingapore Airlines

Fri 11/78:45 pmSIN - DCA

1 stop36h 15mSingapore Airlines

Deal found 9/14

$1,090

Wed 10/226:59 pmDCA - SIN

1 stop36h 11mSingapore Airlines

Wed 11/58:45 pmSIN - DCA

1 stop36h 15mSingapore Airlines

Deal found 9/13

$1,103

Tue 10/285:59 pmDCA - SIN

1 stop25h 01mUnited Airlines

Tue 11/410:20 pmSIN - DCA

2 stops25h 09mUnited Airlines

Deal found 9/12

$1,117

Wed 10/2212:31 pmDCA - SIN

2 stops28h 59mCathay Pacific

Tue 11/41:25 amSIN - DCA

2 stops30h 19mCathay Pacific

Deal found 9/13

$1,124

Tue 10/75:59 pmDCA - SIN

1 stop24h 16mUnited Airlines

Tue 10/148:45 amSIN - DCA

1 stop25h 06mUnited Airlines

Deal found 9/14

$1,125

Tue 9/301:00 pmDCA - SIN

2 stops29h 15mUnited Airlines

Thu 10/28:40 pmSIN - DCA

2 stops24h 18mUnited Airlines

Deal found 9/14

$1,129

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 September 14, 2025.

Tue 11/115:59 pmDCA - SIN

1 stop25h 01mUnited Airlines

Tue 11/1810:20 pmSIN - DCA

2 stops26h 09mUnited Airlines

Deal found 9/12

$1,125

Wed 11/266:59 amDCA - SIN

2 stops33h 01mKorean Air

Wed 12/310:30 pmSIN - DCA

2 stops27h 21mKorean Air

Deal found 9/14

$1,145

Mon 10/135:59 pmDCA - SIN

1 stop24h 16mUnited Airlines

Thu 10/238:45 amSIN - DCA

1 stop25h 06mUnited Airlines

Deal found 9/14

$1,125

Mon 11/246:06 amDCA - SIN

2 stops33h 54mKorean Air

Wed 12/310:30 pmSIN - DCA

2 stops27h 21mKorean Air

Deal found 9/14

$1,145

Tue 10/77:00 amDCA - SIN

1 stop23h 25mUnited Airlines

Mon 10/138:45 amSIN - DCA

1 stop25h 06mUnited Airlines

Deal found 9/14

$1,125

Mon 3/25:50 pmDCA - SIN

1 stop25h 10mUnited Airlines

Mon 3/910:10 amSIN - DCA

1 stop23h 03mUnited Airlines

Deal found 9/12

$1,125

Thu 10/97:00 amDCA - SIN

1 stop23h 25mUnited Airlines

Thu 10/168:45 amSIN - DCA

1 stop25h 06mUnited Airlines

Deal found 9/14

$1,125

Thu 10/27:00 amDCA - SIN

1 stop23h 25mUnited Airlines

Mon 10/68:40 pmSIN - DCA

2 stops26h 18mUnited Airlines

Deal found 9/13

$1,129

Wed 3/412:00 pmDCA - SIN

3 stops43h 15mUnited Airlines

Mon 3/1610:10 amSIN - DCA

2 stops25h 46mUnited Airlines

Deal found 9/14

$1,129

Thu 10/167:00 amDCA - SIN

1 stop23h 25mUnited Airlines

Sat 10/258:45 amSIN - DCA

1 stop25h 06mUnited Airlines

Deal found 9/14

$1,175

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

Sun 9/149:40 amDCA - SIN

2 stops33h 25mAir Canada

Tue 9/239:10 amSIN - DCA

2 stops35h 49mAir Canada

Deal found 9/13

$1,080

Sun 9/148:40 pmDCA - SIN

2 stops39h 00mDelta

Mon 9/221:10 amSIN - DCA

2 stops34h 29mDelta

Deal found 9/13

$1,139

Mon 9/159:40 amDCA - SIN

2 stops57h 25mAir Canada

Mon 9/226:15 amSIN - DCA

2 stops40h 05mAir Canada

Deal found 9/14

$1,086

Tue 9/301:00 pmDCA - SIN

2 stops29h 15mUnited Airlines

Thu 10/28:40 pmSIN - DCA

2 stops24h 18mUnited Airlines

Deal found 9/14

$1,129

Tue 10/75:59 pmDCA - SIN

1 stop24h 16mUnited Airlines

Tue 10/148:45 amSIN - DCA

1 stop25h 06mUnited Airlines

Deal found 9/14

$1,125

Tue 10/145:59 pmDCA - SIN

1 stop24h 16mUnited Airlines

Tue 1/2010:45 amSIN - DCA

3 stops40h 04mUnited Airlines

Deal found 9/14

$1,135

Tue 10/144:23 pmDCA - SIN

2 stops25h 52mUnited Airlines

Tue 10/216:15 amSIN - DCA

2 stops25h 51mUnited Airlines

Deal found 9/14

$1,138

Wed 10/226:59 pmDCA - SIN

1 stop36h 11mSingapore Airlines

Wed 10/298:45 pmSIN - DCA

1 stop35h 15mSingapore Airlines

Deal found 9/12

$986

Wed 10/226:59 pmDCA - SIN

1 stop36h 11mSingapore Airlines

Wed 11/58:45 pmSIN - DCA

1 stop36h 15mSingapore Airlines

Deal found 9/13

$1,103

Wed 10/2212:31 pmDCA - SIN

2 stops28h 59mCathay Pacific

Tue 11/41:25 amSIN - DCA

2 stops30h 19mCathay Pacific

Deal found 9/13

$1,124

Tue 10/286:58 pmDCA - SIN

1 stop36h 07mMultiple Airlines

Tue 11/49:00 amSIN - DCA

1 stop25h 59mMultiple Airlines

Deal found 9/12

$1,084

Tue 10/285:59 pmDCA - SIN

1 stop25h 01mUnited Airlines

Tue 11/410:20 pmSIN - DCA

2 stops25h 09mUnited Airlines

Deal found 9/12

$1,117

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 September 14, 2025.

Tue 10/286:31 pmDCA - SIN

3 stops54h 29mMultiple Airlines

Deal found 9/12

$444

Tue 11/48:00 amDCA - SIN

3 stops40h 00mMultiple Airlines

Deal found 9/14

$456

Tue 11/259:40 amDCA - SIN

2 stops56h 20mAir Canada

Deal found 9/14

$481

Mon 3/29:30 amDCA - SIN

2 stops38h 30mMultiple Airlines

Deal found 9/12

$489

Wed 11/58:00 amDCA - SIN

2 stops36h 35mMultiple Airlines

Deal found 9/14

$505

Sat 11/88:40 pmDCA - SIN

2 stops45h 20mAir Canada

Deal found 9/14

$511

Mon 9/291:00 pmDCA - SIN

3 stops36h 20mMultiple Airlines

Deal found 9/14

$525

Fri 10/241:00 pmDCA - SIN

3 stops42h 10mMultiple Airlines

Deal found 9/13

$532

Wed 2/119:30 amDCA - SIN

2 stops32h 25mMultiple Airlines

Deal found 9/13

$538

Mon 11/109:59 amDCA - SIN

2 stops38h 01mMultiple Airlines

Deal found 9/14

$546

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

Tue 11/11

5:59 pm-8:00 am

1 stop25h 01m

Singapore Changi

Tue 11/18

10:20 pm-11:29 am

2 stops26h 09m

$1,125

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Mon 10/13

5:59 pm-6:15 am

1 stop24h 16m

Singapore Changi

Thu 10/23

8:45 am-9:51 pm

1 stop25h 06m

$1,125

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 10/7

7:00 am-6:25 pm

1 stop23h 25m

Singapore Changi

Mon 10/13

8:45 am-9:51 pm

1 stop25h 06m

$1,125

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Mon 3/2

5:50 pm-8:00 am

1 stop25h 10m

Singapore Changi

Mon 3/9

10:10 am-9:13 pm

1 stop23h 03m

$1,125

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 10/9

7:00 am-6:25 pm

1 stop23h 25m

Singapore Changi

Thu 10/16

8:45 am-9:51 pm

1 stop25h 06m

$1,125

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 10/2

7:00 am-6:25 pm

1 stop23h 25m

Singapore Changi

Mon 10/6

8:40 pm-10:58 am

2 stops26h 18m

$1,129

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 3/4

12:00 pm-8:15 pm

3 stops43h 15m

Singapore Changi

Mon 3/16

10:10 am-11:56 pm

2 stops25h 46m

$1,129

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 11/26

6:59 am-5:00 am

2 stops33h 01m

Singapore Changi

Wed 12/3

10:30 pm-12:51 pm

2 stops27h 21m

$1,145

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Mon 11/24

6:06 am-5:00 am

2 stops33h 54m

Singapore Changi

Wed 12/3

10:30 pm-12:51 pm

2 stops27h 21m

$1,145

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 10/16

7:00 am-6:25 pm

1 stop23h 25m

Singapore Changi

Sat 10/25

8:45 am-9:51 pm

1 stop25h 06m

$1,175

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 20 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

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.

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 23h 25m. United Airlines provides one of the quickest options available for as low as $1,125. There are 9651 mi between Washington, D.C. Reagan-National Airport and Singapore.
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.
What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Singapore?
Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Singapore (average of $1,002). Flying from Washington, D.C. Reagan-National Airport to Singapore in December is currently the most expensive (average of $1,665). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$444+ 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 10/28. 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

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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 September 14, 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 September 14, 2025.

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

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

Find hourly flight availability from Reagan-National to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 14, 2025.

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?

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Singapore?

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 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 September 14, 2025.