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$ 1,354. 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, Washington, D.C. Reagan-National - Singapore Changi or Baltimore/Washington - 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$ 625+ 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 27 August 2026.

Thu 8-1015:10 -

1 stop30h 30m

Thu 15-1021:00 -

1 stop24h 45m

Deal found 26-8S$ 1,267

Tue 1-919:35 -

2 stops53h 10m

Tue 15-920:00 -

2 stops39h 10m

Deal found 22-8S$ 1,282

Tue 20-1023:00 -

1 stop29h 25m

Thu 12-1117:45 -

1 stop37h 45m

Deal found 24-8S$ 1,292

Fri 28-808:28 -

2 stops27h 27m

Sun 13-922:00 -

1 stop25h 05m

Deal found 22-8S$ 1,296

Thu 12-1106:00 -

2 stops36h 00m

Tue 24-1108:40 -

2 stops26h 19m

Deal found 27-8S$ 1,304

Thu 12-1109:55 -

2 stops32h 05m

Tue 24-1108:40 -

2 stops24h 43m

Deal found 27-8S$ 1,304

Wed 9-915:10 -

1 stop30h 30m

Wed 23-921:00 -

1 stop24h 45m

Deal found 27-8S$ 1,305

Wed 9-909:07 -

2 stops56h 08m

Thu 17-907:00 -

2 stops36h 43m

Deal found 22-8S$ 1,307

Wed 9-921:00 -

1 stop23h 50m

Wed 23-919:15 -

2 stops25h 30m

Deal found 26-8S$ 1,309

Tue 22-911:05 -

2 stops25h 05m

Tue 29-919:40 -

1 stop32h 00m

Deal found 25-8S$ 1,310

Thu 10-911:05 -

1 stop22h 10m

Thu 24-915:35 -

2 stops36h 05m

Deal found 25-8S$ 1,311

Wed 21-1017:20 -

2 stops31h 55m

Tue 27-1015:55 -

2 stops30h 10m

Deal found 24-8S$ 1,314

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 27 August 2026.

Sun 20-913:15 -

1 stop27h 45m

Fri 25-922:00 -

1 stop25h 05m

Deal found 26-8S$ 1,354

Wed 9-906:10 -

2 stops29h 45m

Wed 16-907:30 -

2 stops27h 53m

Deal found 22-8S$ 1,368

Thu 14-114:35 -

1 stop30h 00m

Fri 12-219:25 -

1 stop26h 40m

Deal found 25-8S$ 1,415

Mon 12-1021:00 -

2 stops25h 15m

Fri 16-1003:15 -

1 stop24h 25m

Deal found 25-8S$ 1,426

Thu 8-1011:40 -

2 stops29h 50m

Mon 12-1001:45 -

2 stops34h 31m

Deal found 22-8S$ 1,689

Tue 17-1107:45 -

1 stop35h 15m

Tue 24-1110:10 -

1 stop25h 20m

Deal found 22-8S$ 1,705

Fri 13-1118:55 -

1 stop34h 30m

Sat 5-1223:15 -

1 stop30h 50m

Deal found 24-8S$ 2,028

Thu 10-906:00 -

2 stops29h 55m

Tue 15-901:25 -

1 stop21h 40m

Deal found 22-8S$ 1,361

Sat 10-1021:00 -

2 stops33h 15m

Sat 17-1019:40 -

1 stop32h 00m

Deal found 26-8S$ 1,476

Tue 8-908:08 -

2 stops27h 47m

Thu 17-907:30 -

1 stop39h 35m

Deal found 22-8S$ 1,361

Fri 15-114:35 -

1 stop30h 00m

Sat 13-219:25 -

1 stop26h 40m

Deal found 25-8S$ 1,517

Thu 10-908:08 -

2 stops32h 52m

Mon 14-907:30 -

1 stop39h 35m

Deal found 26-8S$ 1,361

Sat 19-913:10 -

2 stops29h 05m

Sat 26-908:45 -

1 stop25h 45m

Deal found 26-8S$ 1,705

Wed 9-913:15 -

1 stop27h 45m

Sun 20-922:00 -

2 stops35h 44m

Deal found 22-8S$ 1,368

Tue 6-1012:57 -

2 stops29h 18m

Tue 13-1008:45 -

1 stop26h 08m

Deal found 22-8S$ 1,705

Thu 10-910:14 -

2 stops30h 46m

Mon 14-922:00 -

2 stops31h 30m

Deal found 26-8S$ 1,375

Wed 17-218:55 -

1 stop32h 10m

Sun 28-223:15 -

1 stop30h 50m

Deal found 26-8S$ 2,051

Sat 10-1008:30 -

2 stops33h 45m

Mon 19-1020:35 -

1 stop22h 45m

Deal found 24-8S$ 1,710

Tue 8-918:26 -

2 stops46h 34m

Sun 20-922:00 -

2 stops35h 44m

Deal found 22-8S$ 1,375

Wed 16-913:05 -

2 stops29h 10m

Thu 22-1020:35 -

1 stop22h 45m

Deal found 25-8S$ 1,710

Sat 10-1020:16 -

2 stops31h 54m

Tue 24-1123:15 -

1 stop30h 50m

Deal found 25-8S$ 2,264

Sat 10-1012:57 -

2 stops29h 18m

Sat 17-1008:45 -

2 stops26h 07m

Deal found 26-8S$ 1,710

Sun 14-219:52 -

2 stops31h 13m

Fri 26-223:15 -

1 stop30h 50m

Deal found 25-8S$ 2,282

Thu 8-1021:30 -

1 stop33h 10m

Tue 13-1023:25 -

1 stop32h 15m

Deal found 22-8S$ 2,309

Thu 8-1012:57 -

2 stops29h 18m

Thu 15-1008:45 -

1 stop26h 08m

Deal found 26-8S$ 2,088

Sun 11-1020:16 -

2 stops31h 54m

Sun 18-1023:25 -

1 stop32h 15m

Deal found 26-8S$ 2,405

Thu 12-1117:49 -

1 stop25h 11m

Tue 24-1122:20 -

2 stops23h 36m

Deal found 27-8S$ 2,093

Wed 21-1021:30 -

1 stop33h 10m

Tue 27-1023:05 -

2 stops31h 19m

Deal found 24-8S$ 2,412

Fri 9-1018:50 -

1 stop23h 25m

Fri 16-1020:35 -

2 stops32h 02m

Deal found 25-8S$ 2,156

Tue 22-1218:55 -

1 stop32h 10m

Sun 27-1223:15 -

1 stop30h 50m

Deal found 25-8S$ 2,448

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

Round-trip from	S$ 1,267
One-way from	S$ 625
Popular in	December
Cheapest in	February
Average price	S$ 1,461

Etihad Airways
8-10-15-10
2 total stops
55h 15m total
Washington, D.C. to Singapore

Search Deals

Etihad Airways
1-9
1 total stop
30h 30m total
Washington, D.C. to Singapore

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (S$ 223 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (S$ 108 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 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

Sun 20-9

13:15-05:00

1 stop27h 45m

Singapore Changi

Fri 25-9

22:00-11:05

1 stop25h 05m

S$ 1,354

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 10-9

06:00-23:55

2 stops29h 55m

Singapore Changi

Tue 15-9

01:25-11:05

1 stop21h 40m

S$ 1,361

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 8-9

08:08-23:55

2 stops27h 47m

Singapore Changi

Thu 17-9

07:30-11:05

1 stop39h 35m

S$ 1,361

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 10-9

08:08-05:00

2 stops32h 52m

Singapore Changi

Mon 14-9

07:30-11:05

1 stop39h 35m

S$ 1,361

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 9-9

06:10-23:55

2 stops29h 45m

Singapore Changi

Wed 16-9

07:30-23:23

2 stops27h 53m

S$ 1,368

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 9-9

13:15-05:00

1 stop27h 45m

Singapore Changi

Sun 20-9

22:00-21:44

2 stops35h 44m

S$ 1,368

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Thu 10-9

10:14-05:00

2 stops30h 46m

Singapore Changi

Mon 14-9

22:00-17:30

2 stops31h 30m

S$ 1,375

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 8-9

18:26-05:00

2 stops46h 34m

Singapore Changi

Sun 20-9

22:00-21:44

2 stops35h 44m

S$ 1,375

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 14-1

14:35-09:35

1 stop30h 00m

Singapore Changi

Fri 12-2

19:25-09:05

1 stop26h 40m

S$ 1,415

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 12-10

21:00-10:15

2 stops25h 15m

Singapore Changi

Fri 16-10

03:15-15:40

1 stop24h 25m

S$ 1,426

Flights are sorted by cheapest return flights first.

Deals found on 26-8

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$ 1,307). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,520). 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 85 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$ 1,354. 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, Washington, D.C. Reagan-National - Singapore Changi or Baltimore/Washington - 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$ 1,307). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,520). 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$ 2,404	AverageS$ 2,510	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$ 625

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 1-9. 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 27 August 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 27 August 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 27 August 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 27 August 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 27 August 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 27 August 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 27 August 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 27 August 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 85 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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Washington, D.C. and Singapore flights

Browse other Washington, D.C. and Singapore flight options. Last updated on 27 August 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 27 August 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 27 August 2026.

Last-minute flights from Washington, D.C. to Singapore
Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 27 August 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 27 August 2026.