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

A quick flight from Washington, D.C. to Singapore can take about 28h 10m. Turkish Airlines provides one of the quickest options available for as low as S$ 1,552. 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$ 572+ 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.

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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 3 October 2026.

Thu 15-1015:10 -

1 stop30h 30m

Wed 28-1019:25 -

1 stop26h 40m

Deal found 28-9S$ 1,292

Thu 8-1011:05 -

1 stop22h 10m

Tue 13-1019:40 -

1 stop32h 15m

Deal found 28-9S$ 1,350

Mon 16-1117:46 -

2 stops48h 14m

Sat 21-1108:40 -

2 stops40h 08m

Deal found 28-9S$ 1,388

Sat 24-1015:10 -

1 stop30h 25m

Thu 29-1019:25 -

1 stop26h 40m

Deal found 28-9S$ 1,466

Sun 4-1010:55 -

1 stop39h 55m

Fri 9-1002:00 -

2 stops29h 30m

Deal found 28-9S$ 1,480

Wed 21-1013:15 -

1 stop31h 30m

Sat 24-1023:05 -

1 stop25h 40m

Deal found 28-9S$ 1,495

Sat 14-1117:46 -

2 stops48h 14m

Tue 29-1208:40 -

2 stops24h 30m

Deal found 29-9S$ 1,507

Mon 12-1015:10 -

1 stop30h 30m

Fri 23-1021:00 -

1 stop24h 45m

Deal found 29-9S$ 1,509

Wed 28-1012:31 -

2 stops35h 19m

Wed 4-1114:25 -

2 stops31h 35m

Deal found 30-9S$ 1,511

Tue 13-1010:55 -

1 stop39h 55m

Tue 20-1002:00 -

2 stops29h 30m

Deal found 29-9S$ 1,512

Sat 10-1011:05 -

1 stop22h 10m

Fri 16-1006:20 -

2 stops45h 35m

Deal found 30-9S$ 1,513

Wed 11-1112:55 -

2 stops29h 05m

Fri 20-1108:40 -

2 stops24h 18m

Deal found 2-10S$ 1,522

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 3 October 2026.

Tue 20-1019:13 -

2 stops29h 12m

Tue 27-1007:30 -

2 stops28h 29m

Deal found 2-10S$ 1,529

Fri 4-1213:30 -

1 stop28h 20m

Fri 11-1211:40 -

1 stop37h 05m

Deal found 1-10S$ 1,547

Thu 12-1111:50 -

1 stop28h 10m

Mon 23-1101:40 -

2 stops25h 14m

Deal found 30-9S$ 1,552

Sat 24-1006:00 -

2 stops35h 00m

Wed 28-1001:40 -

2 stops35h 02m

Deal found 28-9S$ 1,570

Tue 13-1011:05 -

1 stop22h 10m

Fri 16-1003:15 -

1 stop24h 40m

Deal found 30-9S$ 1,576

Tue 10-1106:00 -

2 stops29h 20m

Thu 19-1110:00 -

2 stops32h 30m

Deal found 30-9S$ 1,643

Mon 2-1117:49 -

1 stop25h 11m

Mon 16-1110:10 -

1 stop25h 20m

Deal found 1-10S$ 1,717

Thu 12-1121:20 -

1 stop31h 20m

Mon 16-1123:15 -

1 stop33h 10m

Deal found 2-10S$ 1,547

Fri 5-311:50 -

1 stop43h 35m

Sat 13-322:30 -

2 stops31h 56m

Deal found 2-10S$ 1,588

Thu 25-206:10 -

2 stops29h 10m

Sat 13-307:30 -

2 stops34h 30m

Deal found 28-9S$ 1,591

Thu 15-1006:00 -

2 stops35h 30m

Wed 28-1010:00 -

2 stops25h 23m

Deal found 28-9S$ 1,645

Wed 17-312:50 -

1 stop28h 10m

Fri 26-322:30 -

2 stops31h 00m

Deal found 30-9S$ 1,663

Tue 20-1012:57 -

2 stops29h 18m

Tue 27-1010:10 -

1 stop24h 20m

Deal found 2-10S$ 1,717

Tue 5-121:20 -

1 stop22h 25m

Sat 9-110:25 -

1 stop46h 00m

Deal found 29-9S$ 1,690

Thu 12-1110:11 -

2 stops36h 39m

Mon 16-1110:00 -

2 stops45h 04m

Deal found 2-10S$ 1,714

Thu 4-310:30 -

2 stops31h 25m

Thu 18-322:20 -

1 stop30h 26m

Deal found 1-10S$ 1,738

Sun 6-1208:00 -

2 stops32h 00m

Mon 14-1222:30 -

2 stops26h 08m

Deal found 1-10S$ 1,742

Tue 10-1106:59 -

2 stops33h 01m

Mon 30-1122:30 -

2 stops31h 50m

Deal found 30-9S$ 1,744

Thu 15-1017:57 -

2 stops27h 43m

Wed 28-1019:25 -

2 stops35h 36m

Deal found 28-9S$ 1,897

Fri 23-1013:06 -

2 stops35h 54m

Fri 30-1020:20 -

2 stops37h 39m

Deal found 28-9S$ 1,770

Wed 3-312:40 -

2 stops30h 20m

Wed 17-310:10 -

1 stop23h 49m

Deal found 30-9S$ 2,100

Mon 1-317:59 -

1 stop25h 01m

Mon 8-310:10 -

1 stop24h 49m

Deal found 3-10S$ 2,111

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

Round-trip from	S$ 1,137
One-way from	S$ 572
Popular in	December
Cheapest in	February
Average price	S$ 1,507

Ethiopian Air
10-11-29-11
3 total stops
82h 50m total
Washington, D.C. to Singapore

Search Deals

18-11-31-12
2 total stops
56h 00m total
Washington, D.C. to Singapore

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (S$ 213 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (S$ 112 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 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 27-1

11:50-20:25

1 stop43h 35m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 655

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Wed 27-1

17:00-20:25

2 stops38h 25m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 663

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 28-1

07:00-00:15

2 stops28h 15m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 663

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 2-11

07:46-13:10

2 stops40h 24m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 679

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Wed 27-1

08:00-19:40

2 stops46h 40m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 695

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 13-10

06:13-05:00

2 stops34h 47m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 705

Fastest return journey

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 10-10

21:00-08:50

1 stop23h 50m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 737

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Thu 22-10

07:59-05:00

2 stops33h 01m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 801

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Fri 23-10

08:50-23:55

2 stops27h 05m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 801

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sun 18-10

07:05-05:00

2 stops33h 55m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 801

Flights are sorted by cheapest return flights first.

Deals found on 2-10

Showing 1-10 of 42 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

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

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$ 1,241). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,588). 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 28h 10m. Turkish Airlines provides one of the quickest options available for as low as S$ 1,552. 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$ 1,241). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,588). 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$ 2,420	AverageS$ 2,527	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?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Singapore from Washington, D.C. today and book when prices fit your budget.

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Cheap flights from Washington, D.C. to Singapore from S$ 572

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18-11. 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 3 October 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 3 October 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 3 October 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 3 October 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 3 October 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 3 October 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 3 October 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 3 October 2026.

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

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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

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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Washington, D.C. and Singapore flights

Browse other Washington, D.C. and Singapore flight options. Last updated on 3 October 2026.

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

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

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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 3 October 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 3 October 2026.

Last-minute flights from Washington, D.C. to Singapore
Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 3 October 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 3 October 2026.