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. Etihad Airways provides one of the quickest options available for as low as S$ 1,377. 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$ 567+ 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 24 September 2026.

Wed 4-1110:00 -

1 stop39h 50m

Tue 10-1102:00 -

1 stop43h 00m

Deal found 20-9S$ 1,092

Fri 13-1110:00 -

1 stop39h 50m

Sat 28-1102:00 -

2 stops43h 00m

Deal found 23-9S$ 1,130

Thu 19-1110:00 -

1 stop39h 50m

Sat 28-1102:00 -

2 stops43h 00m

Deal found 22-9S$ 1,131

Fri 30-1011:00 -

1 stop39h 50m

Sat 7-1102:00 -

1 stop43h 00m

Deal found 23-9S$ 1,132

Fri 20-1110:00 -

1 stop39h 50m

Sat 28-1102:00 -

2 stops43h 00m

Deal found 20-9S$ 1,134

Thu 12-1110:00 -

1 stop39h 50m

Sun 29-1102:00 -

2 stops43h 00m

Deal found 19-9S$ 1,135

Tue 10-1110:00 -

1 stop39h 50m

Sun 29-1102:00 -

2 stops43h 00m

Deal found 24-9S$ 1,136

Fri 13-1110:00 -

1 stop39h 50m

Sun 29-1102:00 -

2 stops43h 00m

Deal found 20-9S$ 1,139

Sun 8-1110:00 -

1 stop39h 50m

Sat 14-1102:00 -

1 stop43h 00m

Deal found 23-9S$ 1,141

Thu 12-1106:00 -

2 stops36h 00m

Tue 24-1108:40 -

2 stops38h 49m

Deal found 20-9S$ 1,329

Thu 5-1106:00 -

2 stops36h 00m

Thu 12-1108:40 -

2 stops38h 49m

Deal found 21-9S$ 1,332

Thu 19-1111:05 -

2 stops30h 55m

Thu 26-1108:40 -

2 stops38h 49m

Deal found 21-9S$ 1,350

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 24 September 2026.

Sat 16-114:35 -

1 stop30h 00m

Sun 31-119:25 -

1 stop26h 40m

Deal found 20-9S$ 1,329

Mon 16-1111:50 -

1 stop28h 10m

Tue 1-1222:30 -

2 stops32h 03m

Deal found 20-9S$ 1,377

Fri 13-1108:05 -

2 stops31h 55m

Fri 20-1110:30 -

1 stop36h 20m

Deal found 19-9S$ 1,555

Thu 8-1011:05 -

2 stops25h 05m

Tue 13-1019:15 -

2 stops32h 40m

Deal found 23-9S$ 1,617

Fri 23-1015:10 -

1 stop30h 30m

Fri 30-1017:00 -

2 stops29h 05m

Deal found 19-9S$ 1,633

Thu 12-1106:00 -

2 stops34h 40m

Mon 16-1110:00 -

2 stops32h 38m

Deal found 23-9S$ 1,641

Tue 9-318:00 -

1 stop25h 00m

Tue 16-310:10 -

1 stop23h 49m

Deal found 21-9S$ 1,714

Fri 11-1218:22 -

2 stops32h 43m

Sun 20-1223:15 -

2 stops33h 45m

Deal found 22-9S$ 2,536

Thu 12-1114:35 -

1 stop30h 00m

Mon 16-1119:25 -

1 stop26h 40m

Deal found 23-9S$ 1,398

Thu 12-1111:50 -

1 stop28h 10m

Mon 16-1122:30 -

2 stops39h 11m

Deal found 19-9S$ 1,568

Tue 9-314:35 -

1 stop30h 00m

Mon 15-317:00 -

2 stops29h 05m

Deal found 21-9S$ 1,639

Tue 9-306:10 -

2 stops33h 50m

Tue 16-310:30 -

2 stops24h 59m

Deal found 21-9S$ 1,641

Wed 10-217:17 -

2 stops36h 23m

Sat 20-222:05 -

2 stops37h 55m

Deal found 19-9S$ 3,360

Tue 20-1012:57 -

2 stops29h 18m

Tue 27-1010:10 -

1 stop24h 20m

Deal found 23-9S$ 1,714

Thu 4-306:10 -

2 stops33h 50m

Tue 16-310:30 -

2 stops25h 50m

Deal found 19-9S$ 1,641

Sat 16-111:50 -

1 stop43h 35m

Sun 31-122:30 -

2 stops26h 29m

Deal found 21-9S$ 1,641

Thu 25-209:30 -

2 stops32h 25m

Thu 4-310:10 -

1 stop24h 49m

Deal found 22-9S$ 1,727

Thu 3-1209:30 -

2 stops32h 25m

Thu 17-1210:10 -

1 stop25h 20m

Deal found 19-9S$ 1,727

Sat 16-112:40 -

2 stops30h 20m

Sun 31-110:10 -

1 stop25h 19m

Deal found 21-9S$ 2,163

Tue 22-1218:13 -

2 stops32h 52m

Mon 4-123:15 -

2 stops33h 03m

Deal found 21-9S$ 3,244

Tue 9-318:00 -

1 stop25h 00m

Mon 15-310:10 -

1 stop23h 49m

Deal found 21-9S$ 2,736

Thu 10-1212:52 -

2 stops30h 08m

Thu 7-110:10 -

1 stop25h 19m

Deal found 20-9S$ 2,866

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

Round-trip from	S$ 1,092
One-way from	S$ 567
Popular in	December
Cheapest in	February
Average price	S$ 1,710

Ethiopian Air
4-11-10-11
2 total stops
82h 50m total
Washington, D.C. to Singapore

Search Deals

4-11-31-12
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$ 221 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

Thu 28-1

14:35-09:35

1 stop30h 00m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 652

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 24-2

14:35-09:35

1 stop30h 00m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 652

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Mon 5-10

07:45-05:00

2 stops33h 15m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 704

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$ 704

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$ 704

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Tue 3-11

06:10-05:00

2 stops33h 50m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 704

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$ 704

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 5-11

06:05-05:00

2 stops33h 55m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 704

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$ 704

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 3-11

07:05-05:00

2 stops32h 55m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 704

Flights are sorted by cheapest return flights first.

Deals found on 20-9

Showing 1-10 of 46 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$ 1,232). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,570). 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. Etihad Airways provides one of the quickest options available for as low as S$ 1,377. 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$ 1,232). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,570). 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$ 2,418	AverageS$ 2,525	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$ 567

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4-11. 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 24 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 24 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 24 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 24 September 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 24 September 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 24 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 24 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 24 September 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 24 September 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 24 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 24 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 24 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 24 September 2026.