How long is the flight from Washington, D.C. to Singapore?

Air Canada, Cathay Pacific, and United Airlines can get you from Washington, D.C. to Singapore in just under 23h 25m. Your travel time can differ by up to 6h 31m. The distance between Washington, D.C. and Singapore is about 9651 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Washington, D.C. to Singapore round-trip?

According to our current data, Air India ($807), Turkish Airlines ($816), and Etihad Airways ($833) offers the cheapest pricing from Washington, D.C. to Singapore. Users have found that Air India is 30% cheaper than the other options available to this destination.

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 are the most popular routes from Washington, D.C. to Singapore?

The most popular route from Washington, D.C. to Singapore is Washington, D.C. Dulles Intl - Singapore Changi. You may also consider Washington, D.C. Reagan-National - Singapore Changi or Baltimore/Washington - Singapore Changi.

What are the most popular airlines that fly from Washington, D.C. to Singapore?

When booking a flight from Washington, D.C. to Singapore, you may want to consider flying on American Airlines, Air Canada or Air India as they are the most popular for this route.

Where are the most common layover locations when flying from Washington, D.C. to Singapore?

Flights departing from Washington, D.C. and landing in Singapore layover in Istanbul most frequently.

Where are the least popular layover locations for Washington, D.C. to Singapore flights?

Washington, D.C. to Singapore flights have a layover in Doha the least frequently.

What are some popular things to do or see while on a layover in Istanbul?

Istanbul travelers tend to visit Taksim Square, Beyazit Meydani, and Laleli Camii more than anywhere else. Taksim Square, Beyazit Meydani, and Laleli Camii can be accessed by traveling approximately 20.8 mi, 21.7 mi, and 21.5 mi, respectively from Istanbul. Travelers in need of a car in Istanbul can rent one for about $44 per day.

What is the cheapest day to fly round-trip from Washington, D.C. to Singapore?

Users have found that flying from Washington, D.C. to Singapore on a Friday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

To save on the cost of your flight from Washington, D.C. to Singapore, book at least 51 days before your planned departure. Booking around this time can save you about 36% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $957 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $957.

What is the cheapest month to fly from Washington, D.C. to Singapore?

August can be a great time to fly to Singapore from Washington, D.C. with a flight ticket averaging about $1,163. Cheapflights users have found deals in the month of August for as cheap as $676. 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.?

For a flight from Washington, D.C. to Singapore, you will be flying into Changi. Singapore Changi (SIN) is just 10.5 mi from the center of the city. Changi is the only Singapore airport and it handles 0 inbound flights from Washington, D.C. per day. 9 airlines have flights to Singapore Changi from Washington, D.C. on a regular basis.

Can I find deals for flights from Washington, D.C. to Singapore that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to Singapore?

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

Can I find deals for business class flights from Washington, D.C. to Singapore?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$386+ Cheap Flights from Washington, D.C. to Singapore

Q: How much does it cost to fly round-trip from Washington, D.C. to Singapore?

Airfare is below average for this route at the moment. Washington, D.C. to Singapore flights typically cost between $905 and $1,246 in February. The cheapest round-trip price found within the last 3 days was $846 on Singapore Airlines (Feb 2-Feb 19).

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. to Singapore Changi are usually found in August or October, booked 50 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from Washington, D.C. to Singapore

Round-trip from	$846 (oojo)
One-way from	$386 (Kiwi.com)
Popular in	December
Cheapest in	August
Average price	$1,023

From Washington, D.C. (WAS) to Singapore Changi

Search Deals

One-way flight from Washington, D.C. (WAS) to Singapore Changi

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($162 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($60 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

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Find flight deals from Washington, D.C. to Singapore

Cheapest flights from Washington, D.C. to Singapore
Explore the most affordable flight options available from Washington, D.C. to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Tue 9/305:45 amBWI - SIN

2 stops29h 35mMultiple Airlines

Tue 10/72:35 pmSIN - BWI

3 stops31h 53mMultiple Airlines

Deal found 9/10

$868

Fri 9/1211:00 amIAD - SIN

1 stop22h 00mAlaska Airlines

Fri 9/196:45 pmSIN - IAD

1 stop32h 55mAlaska Airlines

Deal found 9/11

$885

Wed 9/245:45 amBWI - SIN

2 stops35h 15mMultiple Airlines

Sat 9/277:30 amSIN - BWI

2 stops35h 31mMultiple Airlines

Deal found 9/10

$903

Sat 10/255:35 amBWI - SIN

2 stops30h 05mMultiple Airlines

Tue 10/282:10 pmSIN - BWI

3 stops32h 18mMultiple Airlines

Deal found 9/10

$906

Sun 9/285:45 amBWI - SIN

2 stops29h 35mMultiple Airlines

Fri 10/32:35 pmSIN - BWI

2 stops28h 26mMultiple Airlines

Deal found 9/9

$917

Sat 9/275:45 amBWI - SIN

2 stops29h 35mMultiple Airlines

Fri 10/32:35 pmSIN - BWI

2 stops28h 26mMultiple Airlines

Deal found 9/9

$920

Sun 11/99:45 amIAD - SIN

2 stops32h 15mAir Canada

Tue 11/188:50 amSIN - IAD

2 stops25h 04mAir Canada

Deal found 9/9

$934

Tue 9/161:30 pmIAD - SIN

2 stops39h 45mIndiGo

Tue 9/237:45 pmSIN - IAD

2 stops36h 00mIndiGo

Deal found 9/9

$947

Thu 10/307:43 amIAD - SIN

1 stop46h 02mSingapore Airlines

Thu 11/139:00 amSIN - IAD

1 stop34h 23mSingapore Airlines

Deal found 9/9

$957

Sat 11/86:13 pmIAD - SIN

1 stop34h 32mSingapore Airlines

Tue 11/189:00 amSIN - IAD

1 stop34h 23mSingapore Airlines

Deal found 9/10

$972

Sat 10/1110:05 pmIAD - SIN

2 stops27h 15mMultiple Airlines

Sun 10/266:10 amSIN - IAD

2 stops46h 40mMultiple Airlines

Deal found 9/10

$979

Sat 10/255:35 amBWI - SIN

2 stops30h 05mMultiple Airlines

Sat 11/17:45 pmSIN - BWI

3 stops47h 50mMultiple Airlines

Deal found 9/10

$980

Best flights from Washington, D.C. to Singapore
Discover carefully curated flight deals from Washington, D.C. to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Tue 11/116:00 amDCA - SIN

2 stops29h 55mAir Canada

Tue 11/188:50 amSIN - DCA

2 stops38h 36mAir Canada

Deal found 9/11

$1,029

Wed 11/54:59 pmDCA - SIN

2 stops29h 56mCathay Pacific

Mon 11/108:15 pmSIN - DCA

2 stops35h 29mCathay Pacific

Deal found 9/11

$1,123

Thu 10/237:00 amDCA - SIN

1 stop23h 25mUnited Airlines

Thu 10/3010:20 pmSIN - DCA

2 stops25h 09mUnited Airlines

Deal found 9/10

$1,125

Wed 11/127:07 amBWI - SIN

1 stop33h 23mSingapore Airlines

Tue 11/189:00 amSIN - BWI

1 stop22h 16mSingapore Airlines

Deal found 9/11

$1,156

Mon 2/167:54 amBWI - SIN

2 stops27h 56mJapan Airlines

Tue 2/248:15 amSIN - BWI

2 stops26h 25mJapan Airlines

Deal found 9/10

$1,266

Sun 2/86:55 pmBWI - SIN

2 stops29h 10mMultiple Airlines

Fri 2/202:25 pmSIN - BWI

2 stops28h 05mMultiple Airlines

Deal found 9/10

$1,267

Sat 10/115:22 pmIAD - SIN

2 stops49h 43mAir Canada

Thu 10/169:10 amSIN - IAD

2 stops36h 28mAir Canada

Deal found 9/9

$1,108

Wed 11/129:45 amDCA - SIN

2 stops30h 55mCathay Pacific

Mon 11/171:25 amSIN - DCA

2 stops30h 19mCathay Pacific

Deal found 9/11

$1,124

Thu 10/27:00 amDCA - SIN

1 stop23h 25mUnited Airlines

Mon 10/68:40 pmSIN - DCA

1 stop32h 12mUnited Airlines

Deal found 9/10

$1,125

Tue 11/117:07 amBWI - SIN

1 stop35h 48mSingapore Airlines

Tue 11/189:00 amSIN - BWI

1 stop22h 16mSingapore Airlines

Deal found 9/11

$1,172

Tue 11/115:59 pmDCA - SIN

1 stop25h 01mUnited Airlines

Tue 11/1810:20 pmSIN - DCA

2 stops26h 09mUnited Airlines

Deal found 9/9

$1,125

Tue 11/117:38 amBWI - SIN

2 stops40h 27mMultiple Airlines

Tue 11/182:25 pmSIN - BWI

2 stops40h 51mMultiple Airlines

Deal found 9/11

$1,274

Last-minute flights from Washington, D.C. to Singapore
Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated September 11, 2025 and is based on user searches.

Fri 9/1211:00 amIAD - SIN

1 stop22h 00mAlaska Airlines

Fri 9/196:45 pmSIN - IAD

1 stop32h 55mAlaska Airlines

Deal found 9/11

$885

Tue 9/161:30 pmIAD - SIN

2 stops39h 45mIndiGo

Tue 9/237:45 pmSIN - IAD

2 stops36h 00mIndiGo

Deal found 9/9

$947

Wed 9/245:45 amBWI - SIN

2 stops35h 15mMultiple Airlines

Sat 9/277:30 amSIN - BWI

2 stops35h 31mMultiple Airlines

Deal found 9/10

$903

Sat 9/275:45 amBWI - SIN

2 stops29h 35mMultiple Airlines

Fri 10/32:35 pmSIN - BWI

2 stops28h 26mMultiple Airlines

Deal found 9/9

$920

Sun 9/285:45 amBWI - SIN

2 stops29h 35mMultiple Airlines

Fri 10/32:35 pmSIN - BWI

2 stops28h 26mMultiple Airlines

Deal found 9/9

$917

Tue 9/305:45 amBWI - SIN

2 stops29h 35mMultiple Airlines

Tue 10/72:35 pmSIN - BWI

3 stops31h 53mMultiple Airlines

Deal found 9/10

$868

Sat 10/1110:05 pmIAD - SIN

2 stops27h 15mMultiple Airlines

Sun 10/266:10 amSIN - IAD

2 stops46h 40mMultiple Airlines

Deal found 9/10

$979

Sat 10/111:30 pmIAD - SIN

2 stops39h 45mIndiGo

Mon 10/207:45 pmSIN - IAD

2 stops36h 00mIndiGo

Deal found 9/10

$983

Sat 10/255:35 amBWI - SIN

2 stops30h 05mMultiple Airlines

Tue 10/282:10 pmSIN - BWI

3 stops32h 18mMultiple Airlines

Deal found 9/10

$906

Sat 10/255:35 amBWI - SIN

2 stops30h 05mMultiple Airlines

Sat 11/17:45 pmSIN - BWI

3 stops47h 50mMultiple Airlines

Deal found 9/10

$980

Sat 10/256:59 pmDCA - SIN

1 stop36h 06mSingapore Airlines

Tue 10/289:00 amSIN - DCA

1 stop24h 59mSingapore Airlines

Deal found 9/10

$986

Thu 10/307:43 amIAD - SIN

1 stop46h 02mSingapore Airlines

Thu 11/139:00 amSIN - IAD

1 stop34h 23mSingapore Airlines

Deal found 9/9

$957

One-way flights from Washington, D.C. to Singapore
Search for one-way flight options from Washington, D.C. to Singapore. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Wed 11/58:26 pmBWI - SIN

2 stops38h 14mMultiple Airlines

Deal found 9/10

$386

Tue 11/45:35 amBWI - SIN

2 stops42h 25mMultiple Airlines

Deal found 9/10

$391

Sun 11/98:26 pmBWI - SIN

2 stops38h 14mMultiple Airlines

Deal found 9/10

$398

Mon 2/98:26 pmBWI - SIN

2 stops38h 14mMultiple Airlines

Deal found 9/10

$402

Sat 10/189:38 pmIAD - SIN

3 stops37h 42mMultiple Airlines

Deal found 9/9

$426

Sat 10/256:31 pmDCA - SIN

3 stops51h 04mMultiple Airlines

Deal found 9/10

$429

Wed 10/157:50 amBWI - SIN

3 stops51h 30mMultiple Airlines

Deal found 9/10

$432

Tue 3/107:00 amIAD - SIN

3 stops42h 00mMultiple Airlines

Deal found 9/9

$432

Wed 9/242:25 pmIAD - SIN

3 stops34h 55mMultiple Airlines

Deal found 9/10

$433

Sat 10/251:35 pmBWI - SIN

3 stops46h 05mMultiple Airlines

Deal found 9/10

$434

Sun 11/96:59 amDCA - SIN

2 stops35h 01mAir Canada

Deal found 9/10

$434

Sun 10/266:21 pmBWI - SIN

3 stops58h 49mMultiple Airlines

Deal found 9/11

$436

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. 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

6:00 am-12:55 am

2 stops29h 55m

Singapore Changi

Tue 11/18

8:50 am-10:26 am

2 stops38h 36m

$1,029

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 10/11

5:22 pm-7:05 am

2 stops49h 43m

Singapore Changi

Thu 10/16

9:10 am-9:38 am

2 stops36h 28m

$1,108

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 11/5

4:59 pm-11:55 am

2 stops29h 56m

Singapore Changi

Mon 11/10

8:15 pm-6:44 pm

2 stops35h 29m

$1,123

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 11/12

9:45 am-5:40 am

2 stops30h 55m

Singapore Changi

Mon 11/17

1:25 am-6:44 pm

2 stops30h 19m

$1,124

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 10/23

7:00 am-6:25 pm

1 stop23h 25m

Singapore Changi

Thu 10/30

10:20 pm-11:29 am

2 stops25h 09m

$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-4:52 pm

1 stop32h 12m

$1,125

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 2/16

6:00 pm-8:00 am

1 stop25h 00m

Singapore Changi

Tue 2/24

10:20 pm-11:25 am

2 stops26h 05m

$1,125

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 10/12

10:05 pm-6:25 pm

1 stop32h 20m

Singapore Changi

Mon 10/20

8:40 pm-2:46 pm

1 stop30h 06m

$1,125

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 12/8

6:00 pm-8:00 am

1 stop25h 00m

Singapore Changi

Wed 1/14

10:10 am-9:09 pm

1 stop23h 59m

$1,125

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 53 results

...

Best time to book a flight from Washington, D.C. to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Washington, D.C. 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. to Singapore

How far ahead should I book a flight from Washington, D.C. to Singapore?

To ensure you get the cheapest price possible for a flight from Washington, D.C. to Singapore, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Singapore (average of $1,002). Flying from Washington, D.C. 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.

What is the cheapest time of day to fly from WAS to SIN?

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Singapore at noon. If you’re flexible enough to do this you can expect to save up to 25% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Washington, D.C. to Singapore?

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

How much does it cost to fly round-trip from Washington, D.C. to Singapore?

What’s the top layover airport for flights from Washington, D.C. to Singapore?

Doha (DOH) – chosen by Cheapflights users on 54% of 1-stop itineraries from Washington, D.C. to Singapore on Cheapflights.

What’s the cheapest layover airport for flights from Washington, D.C. to Singapore?

Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $835.

What’s the fastest layover option from Washington, D.C. to Singapore?

Flights via Doha (DOH) have the shortest average one-way travel time for 1-stop routes: 22h 00m.

Which airport typically offers the quickest layover for flights from Washington, D.C. to Singapore?

Flights via Istanbul (IST) offer the fastest connection on this route, with an average layover time of 1h 28m.

Reviews of airlines servicing Singapore

Get a feel of what it's like to fly with Korean Air, Qatar Airways, and Etihad Airways from Washington, D.C. to Singapore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very good

1,139 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Korean Air

8.4

Very good

1,139 reviews

Korean Air

8.4

Very good

1,139 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Qatar Airways

7.4

Good

3,624 reviews

Korean Air

8.4

Very good

1,139 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Etihad Airways

7.4

Good

1,250 reviews

Korean Air

8.4

Very good

1,139 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

United Airlines

7.4

Good

8,937 reviews

Korean Air

8.4

Very good

1,139 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Turkish Airlines

7.3

Good

3,968 reviews

Korean Air

8.4

Very good

1,139 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Related info for your journey

What airport do you fly into for flights to Singapore from Washington, D.C.?
For a flight from Washington, D.C. to Singapore, you will be flying into Changi. Singapore Changi (SIN) is just 10.5 mi from the center of the city. Changi is the only Singapore airport and it handles 0 inbound flights from Washington, D.C. per day. 9 airlines have flights to Singapore Changi from Washington, D.C. on a regular basis.
How long is the flight from Washington, D.C. to Singapore?
Air Canada, Cathay Pacific, and United Airlines can get you from Washington, D.C. to Singapore in just under 23h 25m. Your travel time can differ by up to 6h 31m. The distance between Washington, D.C. and Singapore is about 9651 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from Washington, D.C. to Singapore round-trip?
According to our current data, Air India ($807), Turkish Airlines ($816), and Etihad Airways ($833) offers the cheapest pricing from Washington, D.C. to Singapore. Users have found that Air India is 30% cheaper than the other options available to this destination.
What are the most popular routes from Washington, D.C. to Singapore?
The most popular route from Washington, D.C. to Singapore is Washington, D.C. Dulles Intl - Singapore Changi. You may also consider Washington, D.C. Reagan-National - Singapore Changi or Baltimore/Washington - Singapore Changi.
Where are the most common layover locations when flying from Washington, D.C. to Singapore?
Flights departing from Washington, D.C. and landing in Singapore layover in Istanbul most frequently.
What are some popular things to do or see while on a layover in Istanbul?
Istanbul travelers tend to visit Taksim Square, Beyazit Meydani, and Laleli Camii more than anywhere else. Taksim Square, Beyazit Meydani, and Laleli Camii can be accessed by traveling approximately 20.8 mi, 21.7 mi, and 21.5 mi, respectively from Istanbul. Travelers in need of a car in Istanbul can rent one for about $44 per day.
Where are the least popular layover locations for Washington, D.C. to Singapore flights?
Washington, D.C. to Singapore flights have a layover in Doha the least frequently.
Can I find deals for flights from Washington, D.C. to Singapore that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Singapore?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Singapore.
Can I find deals for business class flights from Washington, D.C. to Singapore?
Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Singapore?
Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Singapore (average of $1,002). Flying from Washington, D.C. 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Washington, D.C. to Singapore

Dulles Intl to Singapore flights

Reagan-National to Singapore flights

Other flights to Singapore

Top 9 airlines flying from Washington, D.C. to Singapore

Airline	Cheapest	Average	Flexibility	On-time
Air India	Cheapest$807	Average$996	FlexibilityNo cancel fee	On-timeN/A
Turkish Airlines	Cheapest$816	Average$943	FlexibilityNo cancel fee	On-time77%
Etihad Airways	Cheapest$833	Average$932	FlexibilityNo cancel fee	On-time75%
Air Canada	Cheapest$938	Average$1,526	FlexibilityNo cancel fee	On-time67%
Korean Air	Cheapest$944	Average$1,199	FlexibilityNo cancel fee	On-time81%
Qatar Airways	Cheapest$996	Average$1,288	FlexibilityNo cancel fee	On-time68%
JetBlue	Cheapest$1,024	Average$1,139	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$1,192	Average$1,432	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$1,196	Average$1,223	FlexibilityNo cancel fee	On-time71%

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$386+ Cheap flights from Washington, D.C. (WAS) 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Washington, D.C. to Singapore Changi are usually found in August or October, booked 50 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from Washington, D.C. to Singapore

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Find flight deals from Washington, D.C. to Singapore

Cheapest flights from Washington, D.C. to SingaporeExplore the most affordable flight options available from Washington, D.C. to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from Washington, D.C. to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

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

Best time to book a flight from Washington, D.C. to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Washington, D.C. with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Singapore

How far ahead should I book a flight from Washington, D.C. to Singapore?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Singapore. Price data was last updated on August 29, 2025.

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

What is the cheapest time of day to fly from WAS to SIN?

Find hourly flight availability from Washington, D.C. 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 11, 2025.

What is the cheapest day to fly from Washington, D.C. to Singapore?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Singapore. Price data was last updated on December 16, 2024.

How much does it cost to fly round-trip from Washington, D.C. to Singapore?

What’s the top layover airport for flights from Washington, D.C. to Singapore?

Share of 1-stop round-trip flights from Washington, D.C. to Singapore chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Washington, D.C. to Singapore?

Average round-trip fare for 1-stop flights from Washington, D.C. to Singapore, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Washington, D.C. to Singapore?

Shortest average travel time for 1-stop one-way flights from Washington, D.C. to Singapore, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Washington, D.C. to Singapore?

Average layover duration for 1-stop one-way flights from Washington, D.C. to Singapore, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Singapore

Get a feel of what it's like to fly with Korean Air, Qatar Airways, and Etihad Airways from Washington, D.C. to Singapore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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.?

How long is the flight from Washington, D.C. to Singapore?

What are the cheapest airlines flying from Washington, D.C. to Singapore round-trip?

What are the most popular routes from Washington, D.C. to Singapore?

Where are the most common layover locations when flying from Washington, D.C. to Singapore?

What are some popular things to do or see while on a layover in Istanbul?

Where are the least popular layover locations for Washington, D.C. to Singapore flights?

Can I find deals for flights from Washington, D.C. to Singapore that include hotel bookings?

How can I find direct flights from Washington, D.C. to Singapore?

Can I find deals for business class flights from Washington, D.C. to Singapore?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington, D.C. to Singapore

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Top 9 airlines flying from Washington, D.C. to Singapore

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Cheapest flights from Washington, D.C. to Singapore
Explore the most affordable flight options available from Washington, D.C. to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.