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

A quick flight from Washington, D.C. to Singapore can take about 27h 45m. Korean Air provides one of the quickest options available for as low as S$ 1,561. Airlines will cover a distance of 15521 km. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Singapore ranges from 150.0 - 269.0 inches per month. December is typically the wettest month, when rainfall can reach 269.0 mm. July is typically the driest time to visit Singapore when rainfall is around 150.0 mm.

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 28.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 26.0 C).

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

Most travellers choose Washington, D.C. Dulles Intl - Singapore Changi, Baltimore/Washington - Singapore Changi or Washington, D.C. Reagan-National - Singapore Changi when deciding on the best route from Washington, D.C. to Singapore.

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

When flying from Washington, D.C. to Singapore, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 holiday 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.

S$ 535+ Cheap Flights from Washington, D.C. to Singapore

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

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 19 September 2026.

Tue 10-1110:00 -

1 stop39h 50m

Sun 29-1102:00 -

2 stops43h 00m

Deal found 18-9S$ 1,137

Fri 13-1110:00 -

1 stop39h 50m

Sat 21-1102:00 -

2 stops43h 00m

Deal found 18-9S$ 1,148

Mon 21-915:10 -

1 stop30h 30m

Mon 5-1021:00 -

1 stop24h 45m

Deal found 15-9S$ 1,163

Mon 12-1015:10 -

1 stop30h 30m

Mon 26-1019:25 -

1 stop26h 40m

Deal found 15-9S$ 1,239

Mon 12-1015:10 -

1 stop30h 30m

Wed 21-1021:00 -

1 stop24h 45m

Deal found 16-9S$ 1,252

Thu 19-1110:00 -

1 stop39h 50m

Fri 27-1102:00 -

1 stop43h 00m

Deal found 18-9S$ 1,255

Thu 17-915:10 -

1 stop30h 30m

Mon 21-921:00 -

1 stop24h 45m

Deal found 15-9S$ 1,256

Thu 15-1015:10 -

1 stop30h 30m

Thu 29-1019:25 -

1 stop26h 40m

Deal found 15-9S$ 1,260

Thu 12-1106:00 -

2 stops36h 00m

Tue 24-1108:40 -

2 stops38h 49m

Deal found 18-9S$ 1,308

Tue 13-1014:56 -

2 stops57h 49m

Tue 27-1020:00 -

2 stops38h 57m

Deal found 15-9S$ 1,313

Thu 29-1006:00 -

2 stops37h 00m

Thu 5-1108:40 -

2 stops38h 49m

Deal found 14-9S$ 1,320

Wed 18-1109:40 -

2 stops32h 20m

Thu 26-1108:40 -

2 stops40h 39m

Deal found 14-9S$ 1,324

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 stopovers in mind to ensure you get the best travel experience. Data last updated 19 September 2026.

Sun 22-1111:50 -

1 stop28h 10m

Wed 25-1101:40 -

2 stops28h 10m

Deal found 18-9S$ 1,375

Sat 24-1015:10 -

1 stop30h 25m

Sat 13-219:25 -

1 stop26h 40m

Deal found 15-9S$ 1,391

Wed 21-1013:15 -

1 stop27h 45m

Sun 25-1022:30 -

2 stops27h 38m

Deal found 16-9S$ 1,561

Mon 12-1006:00 -

2 stops30h 45m

Fri 16-1001:45 -

2 stops34h 14m

Deal found 16-9S$ 1,589

Mon 2-1112:50 -

2 stops30h 10m

Mon 9-1110:10 -

1 stop25h 20m

Deal found 18-9S$ 1,712

Thu 12-1118:55 -

1 stop34h 30m

Mon 16-1123:05 -

1 stop31h 00m

Deal found 17-9S$ 2,036

Thu 12-1106:59 -

2 stops33h 01m

Mon 16-1122:30 -

2 stops27h 10m

Deal found 16-9S$ 1,382

Thu 12-1114:35 -

1 stop30h 00m

Mon 16-1119:25 -

1 stop26h 40m

Deal found 18-9S$ 1,396

Mon 26-1017:05 -

2 stops39h 20m

Fri 12-201:40 -

2 stops29h 25m

Deal found 15-9S$ 1,382

Mon 9-1107:59 -

2 stops32h 01m

Mon 30-1122:30 -

2 stops31h 50m

Deal found 16-9S$ 1,566

Mon 25-118:31 -

1 stop24h 29m

Tue 2-222:20 -

1 stop21h 29m

Deal found 15-9S$ 1,713

Tue 9-306:00 -

2 stops34h 00m

Tue 16-310:30 -

2 stops24h 48m

Deal found 14-9S$ 1,573

Wed 10-316:25 -

3 stops31h 40m

Mon 15-314:25 -

2 stops38h 46m

Deal found 18-9S$ 1,862

Tue 19-117:55 -

1 stop25h 05m

Tue 23-210:10 -

1 stop24h 49m

Deal found 17-9S$ 1,713

Thu 12-1111:50 -

1 stop28h 10m

Mon 16-1122:30 -

2 stops39h 11m

Deal found 18-9S$ 1,566

Tue 9-306:10 -

2 stops33h 50m

Tue 16-310:30 -

2 stops25h 50m

Deal found 14-9S$ 1,573

Wed 18-1118:55 -

1 stop34h 30m

Sun 22-1123:15 -

1 stop30h 50m

Deal found 13-9S$ 2,037

Sun 17-117:55 -

1 stop25h 05m

Fri 26-210:10 -

1 stop24h 49m

Deal found 17-9S$ 1,713

Mon 1-309:00 -

2 stops31h 00m

Mon 8-322:30 -

2 stops28h 20m

Deal found 14-9S$ 1,579

Thu 4-306:00 -

2 stops34h 00m

Tue 16-310:30 -

2 stops24h 48m

Deal found 18-9S$ 1,639

Sun 17-118:31 -

1 stop24h 29m

Wed 24-210:10 -

2 stops25h 24m

Deal found 17-9S$ 1,718

Sat 16-118:30 -

2 stops36h 55m

Sat 30-101:40 -

2 stops28h 50m

Deal found 14-9S$ 1,579

Mon 1-306:10 -

2 stops33h 50m

Mon 8-322:30 -

2 stops26h 23m

Deal found 18-9S$ 1,639

Wed 30-1213:25 -

2 stops34h 40m

Fri 15-102:00 -

2 stops40h 35m

Deal found 15-9S$ 2,203

Thu 29-1020:16 -

2 stops31h 49m

Thu 5-1123:05 -

1 stop31h 00m

Deal found 14-9S$ 2,291

Sun 14-307:00 -

2 stops29h 15m

Tue 30-301:25 -

1 stop21h 50m

Deal found 19-9S$ 1,631

Thu 4-306:10 -

2 stops33h 50m

Tue 16-310:30 -

2 stops25h 50m

Deal found 16-9S$ 1,639

Tue 9-319:54 -

2 stops31h 11m

Tue 16-323:05 -

1 stop31h 00m

Deal found 15-9S$ 2,296

Sun 14-312:50 -

1 stop28h 10m

Sat 27-322:30 -

2 stops31h 00m

Deal found 19-9S$ 1,639

Fri 25-1218:55 -

1 stop32h 10m

Tue 29-1223:15 -

1 stop30h 50m

Deal found 15-9S$ 2,318

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

Round-trip from	S$ 1,137
One-way from	S$ 535
Popular in	December
Cheapest in	February
Average price	S$ 1,708

Ethiopian Air
11-11-29-11
3 total stops
82h 50m total
Washington, D.C. to Singapore

Search Deals

1-11-31-12
2 total stops
56h 00m total
Washington, D.C. to Singapore

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (S$ 222 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (S$ 110 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

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

Cheapest return flight

Washington, D.C.Singapore

IAD Washington, D.C. Dulles Intl - SIN Singapore Changi

IADSIN

Washington, D.C. Dulles Intl

Wed 30-9

13:20-18:05

3 stops40h 45m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 656

Washington, D.C.Singapore

IAD Washington, D.C. Dulles Intl - SIN Singapore Changi

IADSIN

Washington, D.C. Dulles Intl

Thu 8-10

15:10-09:40

1 stop30h 30m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 659

Washington, D.C.Singapore

IAD Washington, D.C. Dulles Intl - SIN Singapore Changi

IADSIN

Washington, D.C. Dulles Intl

Sun 27-9

13:15-05:00

1 stop27h 45m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 700

Washington, D.C.Singapore

DCA Washington, D.C. Reagan-National - SIN Singapore Changi

DCASIN

Washington, D.C. Reagan-National

Thu 28-1

13:30-12:50

2 stops58h 20m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 703

Washington, D.C.Singapore

DCA Washington, D.C. Reagan-National - SIN Singapore Changi

DCASIN

Washington, D.C. Reagan-National

Wed 4-11

06:00-05:00

2 stops34h 00m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 703

Washington, D.C.Singapore

DCA Washington, D.C. Reagan-National - SIN Singapore Changi

DCASIN

Washington, D.C. Reagan-National

Mon 28-9

07:45-05:00

2 stops33h 15m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 703

Washington, D.C.Singapore

IAD Washington, D.C. Dulles Intl - SIN Singapore Changi

IADSIN

Washington, D.C. Dulles Intl

Sun 8-11

06:05-00:15

2 stops29h 10m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 703

Washington, D.C.Singapore

IAD Washington, D.C. Dulles Intl - SIN Singapore Changi

IADSIN

Washington, D.C. Dulles Intl

Tue 13-10

18:12-19:15

2 stops37h 03m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 703

Washington, D.C.Singapore

IAD Washington, D.C. Dulles Intl - SIN Singapore Changi

IADSIN

Washington, D.C. Dulles Intl

Thu 5-11

06:05-00:15

2 stops29h 10m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 703

Washington, D.C.Singapore

DCA Washington, D.C. Reagan-National - SIN Singapore Changi

DCASIN

Washington, D.C. Reagan-National

Sat 7-11

09:00-05:00

2 stops31h 00m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 707

Flights are sorted by cheapest return flights first.

Deals found on 18-9

Showing 1-10 of 57 resultsSorted by cheapest first

...

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.

IAD-SIN

DCA-SIN

BWI-SIN

Estimated return 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

WAS-SG0

IAD-SIN

DCA-SIN

BWI-SIN

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Singapore (average of S$ 1,231). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,567). 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.

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

The best time to book flights from Washington, D.C. to Singapore is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

How long is the flight from Washington, D.C. to Singapore?
A quick flight from Washington, D.C. to Singapore can take about 27h 45m. Korean Air provides one of the quickest options available for as low as S$ 1,561. Airlines will cover a distance of 15521 km. This flight may include one or multiple stops.
What are the most popular routes from Washington, D.C. to Singapore?
Most travellers choose Washington, D.C. Dulles Intl - Singapore Changi, Baltimore/Washington - Singapore Changi or Washington, D.C. Reagan-National - Singapore Changi when deciding on the best route from Washington, D.C. to Singapore.
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 holiday 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, February is the cheapest month in which you can book a flight from Washington, D.C. to Singapore (average of S$ 1,231). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,567). 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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Alternative routes for Washington, D.C. to Singapore

Dulles Intl to Singapore flights

Top airline flying from Washington, D.C. to Singapore

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	CheapestS$ 2,415	AverageS$ 2,522	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights

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How does Cheapflights help users find flights from Washington, D.C. to Singapore?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington, D.C. to Singapore. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Singapore?

Cheapflights simply makes it quick and affordable to book flights from Washington, D.C. to Singapore by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Washington, D.C. to Singapore with no change fees?

Yes, we can. To see specific flights from Washington, D.C. to Singapore with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Washington, D.C. to Singapore become cheaper?

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Cheap flights from Washington, D.C. to Singapore from S$ 535

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1-11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 19 September 2026.

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 19 September 2026.

Best flights from Washington, D.C. to SingaporeDiscover carefully curated flight deals from Washington, D.C. to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 September 2026.

Discover carefully curated flight deals from Washington, D.C. to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 September 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 19 September 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 19 September 2026 and is based on user searches.

One-way flights from Washington, D.C. to SingaporeSearch for one-way flight options from Washington, D.C. to Singapore. Find affordable one-way fares based on user searches. Data last updated 19 September 2026.

Search for one-way flight options from Washington, D.C. to Singapore. Find affordable one-way fares based on user searches. Data last updated 19 September 2026.

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

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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

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

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

The best time to book flights from Washington, D.C. to Singapore is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

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

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

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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Find flights from Washington, D.C. to Singapore, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Washington, D.C. and Singapore flights

Browse other Washington, D.C. and Singapore flight options. Last updated on 19 September 2026.

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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 19 September 2026.

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 stopovers in mind to ensure you get the best travel experience. Data last updated 19 September 2026.

Last-minute flights from Washington, D.C. to Singapore
Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 19 September 2026 and is based on user searches.

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 19 September 2026.