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

A quick flight from Washington, D.C. to Singapore can take about 25h. United Airlines provides one of the quickest options available for as low as S$ 1,515. Airlines will cover a distance of 15532 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$ 588+ 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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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 14 October 2026.

Thu 12-1109:55 -

2 stops32h 05m

Tue 24-1108:40 -

2 stops39h 48m

Deal found 10-10S$ 1,510

Sun 25-1011:00 -

1 stop39h 50m

Sun 8-1102:00 -

2 stops43h 00m

Deal found 11-10S$ 1,514

Tue 10-1120:05 -

2 stops25h 25m

Thu 12-1103:15 -

1 stop25h 40m

Deal found 11-10S$ 1,515

Tue 10-1113:05 -

2 stops28h 50m

Wed 25-1110:10 -

1 stop25h 20m

Deal found 12-10S$ 1,518

Sun 25-1011:30 -

1 stop21h 45m

Fri 30-1003:15 -

1 stop25h 40m

Deal found 10-10S$ 1,519

Thu 3-1221:20 -

1 stop44h 30m

Sat 26-1210:25 -

1 stop46h 00m

Deal found 10-10S$ 1,520

Sun 18-1022:10 -

1 stop32h 25m

Thu 29-1006:35 -

2 stops26h 16m

Deal found 12-10S$ 1,522

Mon 23-1121:20 -

1 stop31h 20m

Mon 30-1111:40 -

1 stop37h 05m

Deal found 11-10S$ 1,523

Sun 25-1000:35 -

1 stop35h 35m

Tue 10-1115:00 -

2 stops42h 35m

Deal found 10-10S$ 1,524

Fri 27-1107:00 -

2 stops28h 15m

Thu 3-1201:40 -

2 stops27h 51m

Deal found 13-10S$ 1,526

Thu 12-1117:45 -

2 stops26h 10m

Tue 24-1123:45 -

1 stop28h 50m

Deal found 10-10S$ 1,527

Mon 19-1012:35 -

1 stop30h 05m

Sun 25-1022:20 -

1 stop23h 50m

Deal found 12-10S$ 1,528

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 14 October 2026.

Tue 9-318:00 -

1 stop25h 00m

Tue 16-310:10 -

1 stop23h 49m

Deal found 13-10S$ 1,515

Wed 7-408:20 -

2 stops27h 35m

Wed 21-422:00 -

2 stops28h 38m

Deal found 13-10S$ 1,519

Mon 2-1106:00 -

2 stops29h 20m

Tue 10-1107:30 -

2 stops35h 08m

Deal found 12-10S$ 1,532

Tue 9-307:00 -

2 stops28h 15m

Mon 15-322:30 -

2 stops28h 11m

Deal found 11-10S$ 1,535

Thu 12-1106:00 -

2 stops34h 40m

Tue 24-1112:55 -

2 stops29h 35m

Deal found 13-10S$ 1,647

Tue 10-1106:00 -

2 stops29h 20m

Mon 16-1107:30 -

2 stops35h 08m

Deal found 12-10S$ 1,532

Wed 10-308:20 -

2 stops26h 55m

Mon 15-322:30 -

2 stops27h 20m

Deal found 14-10S$ 1,535

Tue 2-208:15 -

2 stops34h 45m

Sat 20-210:10 -

2 stops31h 58m

Deal found 13-10S$ 1,573

Sun 25-1010:10 -

2 stops30h 50m

Mon 9-1122:30 -

2 stops31h 50m

Deal found 11-10S$ 1,574

Tue 10-1106:00 -

2 stops29h 20m

Thu 19-1110:00 -

2 stops32h 30m

Deal found 13-10S$ 1,667

Sun 25-1022:20 -

1 stop33h 55m

Fri 30-1006:35 -

2 stops26h 52m

Deal found 14-10S$ 1,573

Fri 30-1006:00 -

2 stops35h 40m

Sat 14-1110:00 -

2 stops32h 38m

Deal found 14-10S$ 1,660

Thu 4-310:19 -

2 stops37h 41m

Sun 7-301:25 -

2 stops33h 34m

Deal found 13-10S$ 1,726

Sat 28-1111:10 -

1 stop30h 45m

Sat 5-1222:20 -

2 stops36h 04m

Deal found 14-10S$ 1,621

Fri 9-417:55 -

2 stops47h 35m

Sun 18-420:05 -

2 stops39h 31m

Deal found 10-10S$ 1,677

Fri 5-322:10 -

2 stops43h 45m

Sat 13-322:20 -

2 stops25h 23m

Deal found 14-10S$ 1,649

Mon 1-312:40 -

2 stops30h 20m

Mon 8-310:10 -

1 stop24h 49m

Deal found 14-10S$ 1,772

Wed 7-412:40 -

2 stops30h 05m

Wed 21-409:00 -

1 stop24h 53m

Deal found 13-10S$ 1,777

Thu 12-1107:00 -

2 stops28h 45m

Mon 16-1122:20 -

1 stop31h 25m

Deal found 14-10S$ 1,778

Sun 25-1017:49 -

1 stop25h 11m

Mon 9-1110:10 -

1 stop25h 20m

Deal found 11-10S$ 1,785

Wed 25-1117:49 -

1 stop25h 11m

Wed 2-1222:20 -

2 stops25h 23m

Deal found 10-10S$ 1,791

Tue 2-217:54 -

1 stop25h 06m

Sun 14-210:10 -

1 stop23h 54m

Deal found 10-10S$ 1,795

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

Round-trip from	S$ 1,510
One-way from	S$ 588
Popular in	December
Cheapest in	February
Average price	S$ 1,505

Air Canada
12-11-24-11
4 total stops
71h 53m total
Washington, D.C. to Singapore

Search Deals

27-11-31-12
2 total stops
46h 45m total
Washington, D.C. to Singapore

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (S$ 238 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (S$ 115 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$ 689

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 28-1

11:50-20:25

1 stop43h 35m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 689

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 24-2

11:50-05:00

1 stop28h 10m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 689

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 10-2

11:50-05:00

1 stop28h 10m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 689

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 10-2

06:00-05:00

2 stops34h 00m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 693

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Wed 27-1

08:20-00:15

2 stops26h 55m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 697

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 20-10

07:05-05:00

2 stops33h 55m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 707

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Sat 7-11

14:41-12:50

2 stops57h 09m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 738

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Sat 28-11

07:00-00:15

2 stops28h 15m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 830

Fastest return journey

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Wed 27-1

17:54-08:00

1 stop25h 06m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 848

Flights are sorted by cheapest return flights first.

Deals found on 13-10

Showing 1-10 of 35 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$ 1,245). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,602). 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 25h. United Airlines provides one of the quickest options available for as low as S$ 1,515. Airlines will cover a distance of 15532 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$ 1,245). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,602). 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$ 2,427	AverageS$ 2,535	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$ 588

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27-11. 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 14 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 14 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 14 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 14 October 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 14 October 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 14 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 14 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 14 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

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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 14 October 2026.

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

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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 14 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 14 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 14 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 14 October 2026.