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$ 1,351. 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$ 532+ 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 13 September 2026.

Mon 14-911:10 -

2 stops40h 35m

Mon 28-916:55 -

2 stops42h 04m

Deal found 8-9S$ 1,074

Mon 14-915:10 -

1 stop30h 30m

Mon 28-917:55 -

1 stop37h 35m

Deal found 8-9S$ 1,199

Mon 26-1015:35 -

1 stop30h 00m

Mon 2-1119:25 -

1 stop26h 40m

Deal found 11-9S$ 1,214

Tue 20-1015:10 -

1 stop30h 30m

Thu 29-1019:25 -

1 stop26h 40m

Deal found 11-9S$ 1,216

Mon 12-1015:10 -

1 stop30h 30m

Mon 26-1019:25 -

1 stop26h 40m

Deal found 12-9S$ 1,218

Tue 27-1015:35 -

1 stop30h 00m

Tue 3-1119:25 -

1 stop26h 40m

Deal found 12-9S$ 1,219

Mon 12-1015:10 -

1 stop30h 30m

Mon 19-1021:00 -

1 stop24h 45m

Deal found 12-9S$ 1,230

Mon 5-1015:10 -

1 stop30h 30m

Mon 19-1021:00 -

1 stop24h 45m

Deal found 8-9S$ 1,231

Thu 22-1015:10 -

1 stop30h 30m

Thu 29-1019:25 -

1 stop26h 40m

Deal found 9-9S$ 1,233

Mon 12-1015:10 -

1 stop30h 30m

Wed 21-1021:00 -

1 stop24h 45m

Deal found 8-9S$ 1,246

Tue 27-1011:05 -

2 stops31h 55m

Tue 3-1108:40 -

2 stops26h 19m

Deal found 12-9S$ 1,298

Thu 12-1106:00 -

2 stops36h 00m

Tue 24-1108:40 -

2 stops38h 49m

Deal found 10-9S$ 1,299

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 13 September 2026.

Tue 13-1015:10 -

1 stop30h 30m

Wed 28-1019:25 -

1 stop26h 40m

Deal found 12-9S$ 1,261

Tue 20-1011:05 -

1 stop22h 10m

Fri 23-1003:15 -

1 stop24h 25m

Deal found 12-9S$ 1,473

Tue 9-318:30 -

2 stops36h 55m

Mon 15-310:30 -

1 stop36h 20m

Deal found 8-9S$ 1,476

Tue 9-306:00 -

2 stops34h 00m

Tue 16-310:30 -

2 stops24h 48m

Deal found 8-9S$ 1,483

Sun 15-1119:05 -

2 stops36h 00m

Sun 22-1120:20 -

2 stops40h 39m

Deal found 8-9S$ 1,577

Mon 16-1112:50 -

2 stops30h 10m

Mon 23-1110:10 -

1 stop25h 20m

Deal found 12-9S$ 1,699

Wed 10-314:35 -

1 stop30h 00m

Mon 15-319:25 -

1 stop26h 40m

Deal found 9-9S$ 1,418

Tue 9-218:30 -

2 stops40h 45m

Sun 21-201:40 -

1 stop21h 10m

Deal found 8-9S$ 1,476

Wed 3-307:05 -

2 stops32h 55m

Wed 17-310:30 -

2 stops25h 50m

Deal found 8-9S$ 1,483

Tue 9-306:10 -

2 stops33h 50m

Tue 16-310:30 -

2 stops25h 50m

Deal found 8-9S$ 1,483

Mon 16-1118:34 -

1 stop24h 26m

Mon 23-1110:10 -

2 stops25h 57m

Deal found 12-9S$ 1,704

Tue 9-318:11 -

2 stops29h 54m

Mon 15-314:25 -

2 stops38h 46m

Deal found 8-9S$ 1,721

Tue 9-309:00 -

2 stops31h 00m

Mon 15-322:30 -

2 stops27h 20m

Deal found 9-9S$ 1,566

Sat 14-1108:00 -

2 stops32h 00m

Sun 22-1122:30 -

1 stop24h 20m

Deal found 12-9S$ 1,541

Sun 11-1006:00 -

2 stops36h 15m

Sun 18-1020:35 -

1 stop22h 45m

Deal found 11-9S$ 1,704

Wed 10-316:25 -

3 stops31h 40m

Mon 15-314:25 -

2 stops34h 35m

Deal found 11-9S$ 1,870

Sun 22-1111:50 -

1 stop43h 35m

Wed 25-1101:40 -

2 stops25h 14m

Deal found 12-9S$ 1,549

Sun 25-1006:00 -

3 stops37h 00m

Sun 1-1122:20 -

2 stops30h 17m

Deal found 10-9S$ 1,704

Mon 1-316:25 -

3 stops31h 40m

Mon 8-314:25 -

2 stops39h 46m

Deal found 11-9S$ 1,872

Mon 28-908:08 -

2 stops32h 52m

Tue 13-1022:00 -

2 stops28h 08m

Deal found 12-9S$ 1,555

Sat 26-908:08 -

2 stops32h 52m

Tue 29-922:00 -

2 stops31h 11m

Deal found 12-9S$ 1,555

Sat 30-118:05 -

2 stops30h 00m

Fri 12-202:00 -

2 stops40h 25m

Deal found 10-9S$ 1,883

Thu 1-1017:59 -

1 stop24h 16m

Thu 8-1020:35 -

2 stops24h 19m

Deal found 8-9S$ 1,999

Thu 4-306:00 -

2 stops34h 00m

Tue 16-310:30 -

2 stops24h 48m

Deal found 12-9S$ 1,560

Wed 28-1006:15 -

3 stops42h 50m

Wed 4-1114:25 -

3 stops43h 35m

Deal found 12-9S$ 1,972

Wed 10-312:00 -

3 stops36h 05m

Mon 15-314:25 -

2 stops41h 35m

Deal found 8-9S$ 1,987

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

Round-trip from	S$ 1,214
One-way from	S$ 532
Popular in	December
Cheapest in	February
Average price	S$ 1,694

Etihad Airways
26-10-2-11
2 total stops
56h 40m total
Washington, D.C. to Singapore

Search Deals

Air China
18-9-31-12
1 total stop
29h 25m total
Washington, D.C. to Singapore

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (S$ 218 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 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

Sun 18-10

15:10-09:40

1 stop30h 30m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 657

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 20-10

15:10-09:40

1 stop30h 30m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 671

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 3-11

14:35-09:35

1 stop30h 00m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 671

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

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 694

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Fri 13-11

11:50-05:00

1 stop28h 10m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 694

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$ 698

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 28-9

07:00-05:00

2 stops34h 00m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 698

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$ 702

Fastest return journey

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 4-11

10:30-21:15

1 stop21h 45m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 729

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 28-9

15:10-08:30

3 stops29h 20m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 729

Flights are sorted by cheapest return flights first.

Deals found on 12-9

Showing 1-10 of 56 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$ 1,221). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,544). 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 28h 10m. Etihad Airways provides one of the quickest options available for as low as S$ 1,351. 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$ 1,221). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,544). 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$ 2,395	AverageS$ 2,502	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$ 532

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18-9. 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 13 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 13 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 13 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 13 September 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 13 September 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 13 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 13 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 13 September 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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Find flights from Washington, D.C. to Singapore, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Washington, D.C. and Singapore flights

Browse other Washington, D.C. and Singapore flight options. Last updated on 13 September 2026.

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

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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 13 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 13 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 13 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 13 September 2026.