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. Ethiopian Air provides one of the quickest options available for as low as S$ 1,589. 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$ 611+ 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 10 October 2026.

Thu 12-1106:00 -

2 stops36h 00m

Tue 24-1108:40 -

2 stops38h 44m

Deal found 8-10S$ 1,507

Thu 12-1109:55 -

2 stops32h 05m

Tue 24-1108:40 -

2 stops39h 48m

Deal found 8-10S$ 1,507

Fri 6-1122:20 -

1 stop30h 20m

Fri 13-1123:15 -

1 stop25h 30m

Deal found 7-10S$ 1,508

Mon 12-1021:00 -

1 stop23h 50m

Mon 19-1019:40 -

1 stop25h 05m

Deal found 5-10S$ 1,509

Sun 1-1114:25 -

1 stop30h 10m

Sat 14-1119:25 -

1 stop26h 35m

Deal found 5-10S$ 1,511

Wed 25-1123:35 -

2 stops45h 55m

Sun 6-1223:15 -

1 stop25h 30m

Deal found 6-10S$ 1,513

Thu 8-1011:05 -

1 stop22h 10m

Tue 13-1019:40 -

1 stop32h 15m

Deal found 7-10S$ 1,518

Thu 22-1011:05 -

1 stop40h 40m

Mon 9-1112:25 -

2 stops33h 35m

Deal found 6-10S$ 1,520

Tue 24-1122:10 -

1 stop21h 45m

Thu 3-1200:05 -

1 stop29h 55m

Deal found 6-10S$ 1,521

Fri 6-1123:55 -

1 stop23h 10m

Wed 11-1113:15 -

1 stop20h 40m

Deal found 5-10S$ 1,522

Tue 24-1109:55 -

3 stops35h 30m

Mon 30-1117:45 -

1 stop37h 45m

Deal found 7-10S$ 1,524

Thu 12-1117:45 -

2 stops26h 10m

Tue 24-1123:45 -

1 stop28h 50m

Deal found 8-10S$ 1,525

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 10 October 2026.

Wed 21-1007:02 -

2 stops34h 28m

Thu 5-1114:05 -

2 stops28h 33m

Deal found 5-10S$ 1,529

Sat 6-307:00 -

2 stops28h 15m

Sun 14-322:30 -

2 stops31h 56m

Deal found 5-10S$ 1,530

Thu 12-1121:20 -

1 stop22h 25m

Fri 20-1104:35 -

1 stop27h 50m

Deal found 7-10S$ 1,534

Mon 2-1118:59 -

2 stops27h 51m

Mon 16-1120:20 -

2 stops34h 44m

Deal found 6-10S$ 1,710

Mon 2-1117:38 -

1 stop25h 22m

Mon 16-1110:10 -

1 stop23h 41m

Deal found 6-10S$ 1,764

Fri 13-1110:35 -

2 stops35h 55m

Sun 15-1121:20 -

2 stops48h 15m

Deal found 7-10S$ 1,919

Thu 12-1111:50 -

1 stop28h 10m

Mon 16-1122:30 -

2 stops28h 24m

Deal found 9-10S$ 1,920

Fri 13-1108:00 -

2 stops27h 50m

Sun 15-1108:15 -

2 stops26h 44m

Deal found 7-10S$ 2,508

Mon 1-307:05 -

2 stops28h 10m

Sun 7-301:40 -

2 stops26h 01m

Deal found 10-10S$ 1,531

Wed 3-214:25 -

1 stop30h 10m

Mon 8-217:00 -

2 stops29h 00m

Deal found 9-10S$ 1,716

Sun 31-111:50 -

1 stop28h 10m

Fri 12-201:40 -

2 stops26h 01m

Deal found 6-10S$ 1,589

Tue 3-1107:45 -

1 stop35h 15m

Wed 18-1110:10 -

1 stop25h 20m

Deal found 5-10S$ 1,781

Wed 17-307:00 -

2 stops29h 15m

Fri 26-310:30 -

2 stops40h 11m

Deal found 8-10S$ 1,595

Tue 24-1107:45 -

1 stop35h 15m

Thu 17-1210:10 -

1 stop25h 20m

Deal found 5-10S$ 1,781

Sun 1-1112:50 -

2 stops30h 10m

Sun 8-1110:10 -

1 stop25h 20m

Deal found 6-10S$ 1,782

Sat 16-117:54 -

1 stop25h 06m

Sun 31-110:10 -

1 stop25h 20m

Deal found 6-10S$ 1,792

Tue 10-1106:05 -

2 stops33h 55m

Mon 30-1122:30 -

2 stops31h 50m

Deal found 7-10S$ 1,810

Thu 19-1106:00 -

2 stops29h 15m

Mon 30-1122:30 -

2 stops28h 31m

Deal found 9-10S$ 1,810

Wed 3-317:59 -

1 stop25h 01m

Wed 17-310:10 -

1 stop23h 49m

Deal found 7-10S$ 2,176

Fri 20-1107:59 -

2 stops32h 01m

Thu 26-1101:40 -

2 stops32h 01m

Deal found 5-10S$ 2,066

Mon 1-312:40 -

2 stops30h 20m

Mon 8-310:10 -

1 stop24h 49m

Deal found 10-10S$ 2,176

Fri 20-1106:00 -

2 stops29h 15m

Thu 26-1101:40 -

2 stops25h 14m

Deal found 6-10S$ 2,066

Thu 19-1111:49 -

2 stops31h 11m

Thu 26-1122:20 -

2 stops27h 09m

Deal found 5-10S$ 2,427

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

Round-trip from	S$ 1,507
One-way from	S$ 611
Popular in	December
Cheapest in	February
Average price	S$ 1,508

Air Canada
12-11-24-11
4 total stops
74h 44m total
Washington, D.C. to Singapore

Search Deals

Gulf Air
4-2-31-12
2 total stops
56h 55m 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

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

DCASIN

Washington, D.C. Reagan-National

Thu 4-2

14:55-12:50

2 stops56h 55m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 611

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Thu 28-1

14:55-12:50

2 stops56h 55m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 620

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

Thu 28-1

06:05-20:25

2 stops49h 20m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 663

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

Fastest return journey

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

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

DCASIN

Washington, D.C. Reagan-National

Mon 9-11

07:50-06:40

2 stops33h 50m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 832

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Sat 7-11

07:00-05:00

2 stops33h 00m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 956

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Sat 17-10

17:54-06:10

2 stops48h 16m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 978

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Wed 4-11

07:45-08:00

1 stop35h 15m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 983

Flights are sorted by cheapest return flights first.

Deals found on 8-10

Showing 1-10 of 33 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.

DCA-SIN

IAD-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

DCA-SIN

IAD-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$ 1,242). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,596). 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 83 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. Ethiopian Air provides one of the quickest options available for as low as S$ 1,589. 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$ 1,242). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,596). 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

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

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	CheapestS$ 2,422	AverageS$ 2,529	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$ 611

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4-2. 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 10 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 10 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 10 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 10 October 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 10 October 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 10 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 10 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 10 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 83 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 10 October 2026.

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

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

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 10 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 10 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 10 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 10 October 2026.