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

Our cheapest airline available from Washington, D.C. Reagan-National Airport to Singapore is United Airlines. Our recent data shows that you can find tickets from as low as $1,040 on this airline. United Airlines is currently priced 27% below the average price you’ll pay for this route.

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 $991). Flying from Washington, D.C. Reagan-National Airport to Singapore in December is currently the most expensive (average of $1,684). 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.

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

Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to Singapore flight should consider departing on Monday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 day to fly round-trip from Washington, D.C. Reagan-National Airport to Singapore?

Users have found that leaving on a Sunday can be a cost-effective option. It’s possible to save up to 27% on your flight compared to booking on days when demand is much higher.

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

Travelers have found it’s best to book a flight 51 days in advance to save up to 36% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 51 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Washington, D.C. Reagan-National Airport to Singapore 1-2 weeks in advance for as low as $957, or $957 for flights within the next 24 hours.

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

August can be a great time to fly to Singapore from Washington, D.C. Reagan-National Airport with a flight ticket averaging about $1,160. Cheapflights users have found deals in the month of August for as cheap as $675. The most expensive prices can be found in the month of December.

What airport do you fly into for flights to Singapore from Washington, D.C. Reagan-National?

Singapore Changi (SIN) is the airport you will fly into if you book a flight from Washington, D.C. Reagan-National to Singapore. You should not have trouble finding flights to Changi from Washington, D.C. Reagan-National; the airport handles an average of 0 inbound flights from Washington, D.C. Reagan-National per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Singapore airport from Washington, D.C. Reagan-National. It is only a 10.5 mi journey from Changi (SIN) to Singapore’s city center.

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.

$495+ 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	$945 (oojo)
One-way from	$495 (Air Canada)
Popular in	December
Cheapest in	January
Average price	$1,530

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

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

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Highest demand for flights based on searches. 0% potential increase in price ($13 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($60 potential savings vs. average RT price).

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Average for round-trip flights in August 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 August 16, 2025.

Wed 11/1211:05 amDCA - SIN

2 stops30h 55mAir Canada

Tue 11/188:50 amSIN - DCA

2 stops26h 06mAir Canada

Deal found 8/14

$969

Sat 10/184:35 pmDCA - SIN

2 stops50h 30mAir Canada

Sat 10/259:10 amSIN - DCA

2 stops35h 45mAir Canada

Deal found 8/13

$980

Sun 10/266:00 amDCA - SIN

2 stops37h 00mAir Canada

Fri 10/318:50 amSIN - DCA

2 stops43h 01mAir Canada

Deal found 8/14

$1,004

Tue 9/169:40 amDCA - SIN

2 stops33h 25mAir Canada

Tue 9/239:10 amSIN - DCA

2 stops35h 49mAir Canada

Deal found 8/14

$1,013

Sun 11/1611:05 amDCA - SIN

2 stops30h 55mAir Canada

Fri 11/218:50 amSIN - DCA

2 stops26h 06mAir Canada

Deal found 8/14

$1,016

Fri 9/129:40 amDCA - SIN

2 stops33h 25mAir Canada

Sat 9/209:10 amSIN - DCA

2 stops35h 49mAir Canada

Deal found 8/15

$1,023

Thu 9/119:40 amDCA - SIN

2 stops33h 25mAir Canada

Thu 9/189:10 amSIN - DCA

2 stops35h 49mAir Canada

Deal found 8/14

$1,024

Wed 9/104:35 pmDCA - SIN

2 stops50h 30mAir Canada

Thu 9/259:10 amSIN - DCA

2 stops25h 24mAir Canada

Deal found 8/14

$1,027

Sat 10/116:50 pmDCA - SIN

2 stops48h 15mAir Canada

Sat 10/189:10 amSIN - DCA

2 stops35h 49mAir Canada

Deal found 8/15

$1,029

Wed 11/196:00 amDCA - SIN

2 stops36h 00mAir Canada

Mon 12/111:10 pmSIN - DCA

2 stops36h 25mAir Canada

Deal found 8/15

$1,030

Mon 9/18:40 pmDCA - SIN

2 stops46h 25mAir Canada

Wed 9/106:15 amSIN - DCA

2 stops27h 36mAir Canada

Deal found 8/15

$1,036

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 August 16, 2025.

Mon 1/195:30 pmDCA - SIN

1 stop35h 15mSingapore Airlines

Wed 1/287:00 pmSIN - DCA

1 stop38h 55mSingapore Airlines

Deal found 8/14

$945

Wed 11/1211:05 amDCA - SIN

2 stops30h 55mAir Canada

Tue 11/188:50 amSIN - DCA

2 stops26h 06mAir Canada

Deal found 8/14

$969

Sat 10/184:35 pmDCA - SIN

2 stops50h 30mAir Canada

Sat 10/259:10 amSIN - DCA

2 stops35h 45mAir Canada

Deal found 8/13

$980

Sun 10/266:00 amDCA - SIN

2 stops37h 00mAir Canada

Fri 10/318:50 amSIN - DCA

2 stops43h 01mAir Canada

Deal found 8/14

$1,004

Tue 9/169:40 amDCA - SIN

2 stops33h 25mAir Canada

Tue 9/239:10 amSIN - DCA

2 stops35h 49mAir Canada

Deal found 8/14

$1,013

Sun 11/1611:05 amDCA - SIN

2 stops30h 55mAir Canada

Fri 11/218:50 amSIN - DCA

2 stops26h 06mAir Canada

Deal found 8/14

$1,016

Mon 11/179:20 pmDCA - SIN

2 stops44h 40mAir Canada

Sat 11/228:50 amSIN - DCA

2 stops38h 36mAir Canada

Deal found 8/14

$1,023

Wed 9/174:35 pmDCA - SIN

2 stops50h 30mAir Canada

Sun 9/219:10 amSIN - DCA

2 stops35h 49mAir Canada

Deal found 8/14

$1,023

Thu 9/119:40 amDCA - SIN

2 stops33h 25mAir Canada

Thu 9/189:10 amSIN - DCA

2 stops35h 49mAir Canada

Deal found 8/14

$1,023

Sat 11/19:20 pmDCA - SIN

2 stops45h 40mAir Canada

Sun 11/98:50 amSIN - DCA

2 stops26h 06mAir Canada

Deal found 8/14

$1,023

Last-minute flights from Reagan-National to Singapore
Discover last-minute flight deals from Reagan-National to Singapore. Data last updated August 16, 2025 and is based on user searches.

Thu 8/216:30 amDCA - SIN

2 stops24h 35mMultiple Airlines

Sat 8/306:00 pmSIN - DCA

2 stops35h 59mMultiple Airlines

Deal found 8/14

$1,259

Thu 8/217:00 amDCA - SIN

1 stop23h 25mUnited Airlines

Sat 8/308:45 amSIN - DCA

2 stops27h 14mUnited Airlines

Deal found 8/14

$1,279

Fri 8/227:00 amDCA - SIN

1 stop23h 25mUnited Airlines

Sun 8/318:45 amSIN - DCA

1 stop24h 52mUnited Airlines

Deal found 8/15

$1,325

Sat 8/237:31 pmDCA - SIN

2 stops28h 54mCathay Pacific

Mon 9/89:45 amSIN - DCA

2 stops27h 19mCathay Pacific

Deal found 8/15

$1,126

Sat 8/237:31 pmDCA - SIN

2 stops41h 19mCathay Pacific

Sun 9/78:05 pmSIN - DCA

2 stops40h 59mCathay Pacific

Deal found 8/14

$1,136

Sat 8/237:00 pmDCA - SIN

1 stop23h 15mUnited Airlines

Mon 9/88:45 amSIN - DCA

1 stop24h 52mUnited Airlines

Deal found 8/15

$1,180

Sat 8/238:40 pmDCA - SIN

2 stops40h 05mAir Canada

Mon 9/86:15 amSIN - DCA

2 stops40h 05mAir Canada

Deal found 8/15

$1,265

Sat 8/236:45 amDCA - SIN

2 stops29h 35mAmerican Airlines

Sun 9/71:55 amSIN - DCA

2 stops26h 27mAmerican Airlines

Deal found 8/15

$1,286

Sat 8/237:00 amDCA - SIN

1 stop23h 25mUnited Airlines

Sun 9/711:05 amSIN - DCA

2 stops45h 58mUnited Airlines

Deal found 8/14

$1,314

Sat 8/236:59 pmDCA - SIN

1 stop36h 11mMultiple Airlines

Mon 9/88:45 pmSIN - DCA

1 stop36h 14mMultiple Airlines

Deal found 8/15

$1,338

Sun 8/245:59 pmDCA - SIN

1 stop36h 26mUnited Airlines

Sun 8/318:45 amSIN - DCA

1 stop24h 52mUnited Airlines

Deal found 8/14

$1,263

Mon 9/18:40 pmDCA - SIN

2 stops46h 25mAir Canada

Sun 9/149:10 amSIN - DCA

2 stops35h 49mAir Canada

Deal found 8/15

$1,030

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 August 16, 2025.

Sat 9/64:35 pmDCA - SIN

2 stops50h 30mAir Canada

Deal found 8/14

$495

Thu 9/46:00 pmDCA - SIN

3 stops39h 30mMultiple Airlines

Deal found 8/14

$509

Sat 11/19:20 pmDCA - SIN

2 stops45h 40mAir Canada

Deal found 8/14

$566

Thu 9/48:20 amDCA - SIN

2 stops28h 30mCathay Pacific

Deal found 8/14

$567

Sat 11/15:00 pmDCA - SIN

1 stop36h 45mSingapore Airlines

Deal found 8/14

$576

Thu 9/1112:25 pmDCA - SIN

2 stops29h 05mCathay Pacific

Deal found 8/14

$604

Sat 9/277:15 amDCA - SIN

3 stops35h 30mMultiple Airlines

Deal found 8/14

$618

Fri 9/59:40 amDCA - SIN

2 stops33h 25mAir Canada

Deal found 8/14

$621

Fri 8/228:20 amDCA - SIN

2 stops28h 30mCathay Pacific

Deal found 8/15

$625

Sat 9/2712:25 pmDCA - SIN

2 stops29h 05mCathay Pacific

Deal found 8/14

$627

Sun 12/78:00 amDCA - SIN

2 stops27h 50mAlaska Airlines

Deal found 8/13

$642

Sat 9/66:59 amDCA - SIN

3 stops34h 31mMultiple Airlines

Deal found 8/14

$654

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

Mon 1/19

5:30 pm-5:45 pm

1 stop35h 15m

Singapore Changi

Wed 1/28

7:00 pm-8:55 pm

1 stop38h 55m

$945

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 11/12

11:05 am-7:00 am

2 stops30h 55m

Singapore Changi

Tue 11/18

8:50 am-9:56 pm

2 stops26h 06m

$969

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sat 10/18

4:35 pm-7:05 am

2 stops50h 30m

Singapore Changi

Sat 10/25

9:10 am-8:55 am

2 stops35h 45m

$980

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sun 10/26

6:00 am-7:00 am

2 stops37h 00m

Singapore Changi

Fri 10/31

8:50 am-3:51 pm

2 stops43h 01m

$1,004

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 9/16

9:40 am-7:05 am

2 stops33h 25m

Singapore Changi

Tue 9/23

9:10 am-8:59 am

2 stops35h 49m

$1,013

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sun 11/16

11:05 am-7:00 am

2 stops30h 55m

Singapore Changi

Fri 11/21

8:50 am-9:56 pm

2 stops26h 06m

$1,016

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Mon 11/17

9:20 pm-7:00 am

2 stops44h 40m

Singapore Changi

Sat 11/22

8:50 am-10:26 am

2 stops38h 36m

$1,023

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 9/17

4:35 pm-7:05 am

2 stops50h 30m

Singapore Changi

Sun 9/21

9:10 am-8:59 am

2 stops35h 49m

$1,023

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 9/11

9:40 am-7:05 am

2 stops33h 25m

Singapore Changi

Thu 9/18

9:10 am-8:59 am

2 stops35h 49m

$1,023

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sat 11/1

9:20 pm-7:00 am

2 stops45h 40m

Singapore Changi

Sun 11/9

8:50 am-9:56 pm

2 stops26h 06m

$1,023

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 21 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 SIN?

Unlike in the morning, when flights are generally more expensive, you can save up to 26% on flights from Washington, D.C. Reagan-National Airport to Singapore by exploring options for tickets in the afternoon.

Reviews of airlines servicing Singapore

Read through reviews of airlines operating flights from Washington, D.C. Reagan-National Airport to Singapore, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,916 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,916 reviews

United Airlines

7.4

Good

8,916 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

What airport do you fly into for flights to Singapore from Washington, D.C. Reagan-National?
Singapore Changi (SIN) is the airport you will fly into if you book a flight from Washington, D.C. Reagan-National to Singapore. You should not have trouble finding flights to Changi from Washington, D.C. Reagan-National; the airport handles an average of 0 inbound flights from Washington, D.C. Reagan-National per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Singapore airport from Washington, D.C. Reagan-National. It is only a 10.5 mi journey from Changi (SIN) to Singapore’s city center.
What is the cheapest airline to fly from Washington, D.C. Reagan-National Airport to Singapore round-trip?
Our cheapest airline available from Washington, D.C. Reagan-National Airport to Singapore is United Airlines. Our recent data shows that you can find tickets from as low as $1,040 on this airline. United Airlines is currently priced 27% below the average price you’ll pay for this route.
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 $991). Flying from Washington, D.C. Reagan-National Airport to Singapore in December is currently the most expensive (average of $1,684). 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.

See more FAQs

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Other flights to Singapore

Top airline flying from Reagan-National to Singapore

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,040	Average$1,241	FlexibilityNo cancel fee	On-time69%

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$495+ Cheap flights from Reagan-National (DCA) to Singapore (SIN)

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Reagan-National to Singapore

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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 August 16, 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 August 16, 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 SIN?

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 August 16, 2025.

Reviews of airlines servicing Singapore

Read through reviews of airlines operating flights from Washington, D.C. Reagan-National Airport to Singapore, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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.

What airport do you fly into for flights to Singapore from Washington, D.C. Reagan-National?

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

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

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

Top airline flying 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 August 16, 2025.