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

A quick flight from Washington, D.C. to Singapore can take about 28h 35m. Korean Air provides one of the quickest options available for as low as S$ 1,621. 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$ 553+ 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 1 September 2026.

Mon 7-915:10 -

1 stop30h 30m

Mon 21-921:00 -

1 stop24h 45m

Deal found 30-8S$ 1,243

Mon 12-1015:10 -

1 stop30h 30m

Mon 19-1021:00 -

1 stop24h 45m

Deal found 28-8S$ 1,247

Sun 13-915:10 -

1 stop30h 30m

Mon 28-917:55 -

1 stop37h 35m

Deal found 31-8S$ 1,258

Thu 17-915:10 -

1 stop30h 30m

Mon 28-921:00 -

1 stop24h 45m

Deal found 31-8S$ 1,282

Sun 20-915:10 -

3 stops33h 50m

Fri 25-909:00 -

1 stop22h 30m

Deal found 28-8S$ 1,289

Thu 24-915:10 -

3 stops33h 50m

Thu 1-1017:55 -

1 stop37h 35m

Deal found 27-8S$ 1,302

Thu 15-1011:05 -

1 stop22h 10m

Wed 21-1003:15 -

1 stop24h 25m

Deal found 31-8S$ 1,303

Thu 12-1106:00 -

2 stops36h 00m

Tue 24-1108:40 -

2 stops38h 49m

Deal found 1-9S$ 1,304

Thu 12-1109:55 -

2 stops32h 05m

Tue 24-1108:40 -

2 stops24h 43m

Deal found 27-8S$ 1,305

Wed 9-915:10 -

1 stop30h 30m

Wed 23-921:00 -

1 stop24h 45m

Deal found 27-8S$ 1,307

Mon 14-915:10 -

1 stop30h 30m

Mon 28-923:25 -

1 stop32h 05m

Deal found 31-8S$ 1,308

Thu 5-1111:05 -

2 stops30h 55m

Sun 15-1108:40 -

2 stops26h 19m

Deal found 31-8S$ 1,354

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 1 September 2026.

Sun 13-910:15 -

2 stops30h 45m

Sun 27-901:25 -

1 stop21h 40m

Deal found 31-8S$ 1,363

Sun 11-1015:10 -

1 stop30h 30m

Wed 28-1019:25 -

1 stop26h 40m

Deal found 30-8S$ 1,387

Thu 12-1121:20 -

1 stop31h 20m

Tue 24-1110:25 -

1 stop46h 00m

Deal found 27-8S$ 1,449

Mon 12-1006:00 -

2 stops30h 45m

Sun 18-1001:45 -

2 stops34h 14m

Deal found 29-8S$ 1,520

Fri 16-1007:45 -

2 stops28h 35m

Fri 23-1008:05 -

2 stops27h 54m

Deal found 31-8S$ 1,621

Sat 17-1010:10 -

2 stops30h 50m

Mon 26-1022:30 -

2 stops30h 07m

Deal found 28-8S$ 1,687

Tue 13-1019:14 -

2 stops31h 51m

Wed 21-1001:45 -

2 stops34h 39m

Deal found 29-8S$ 1,705

Tue 6-1017:59 -

1 stop24h 16m

Tue 13-1008:45 -

1 stop26h 08m

Deal found 28-8S$ 1,707

Sat 20-218:55 -

1 stop32h 10m

Sat 27-223:15 -

1 stop30h 50m

Deal found 27-8S$ 2,053

Mon 28-913:15 -

1 stop42h 00m

Thu 8-1022:00 -

2 stops38h 42m

Deal found 28-8S$ 1,378

Sun 17-114:35 -

1 stop30h 00m

Wed 17-219:25 -

1 stop26h 40m

Deal found 31-8S$ 1,392

Mon 18-121:20 -

1 stop22h 15m

Tue 16-205:10 -

1 stop27h 15m

Deal found 31-8S$ 1,487

Thu 15-1006:00 -

2 stops30h 45m

Tue 27-1010:00 -

2 stops31h 32m

Deal found 31-8S$ 1,520

Sat 14-1114:35 -

1 stop30h 00m

Tue 9-319:25 -

1 stop26h 40m

Deal found 31-8S$ 1,417

Thu 12-1108:00 -

2 stops27h 10m

Tue 24-1122:30 -

1 stop24h 20m

Deal found 29-8S$ 1,489

Mon 28-917:47 -

1 stop24h 28m

Mon 5-1008:45 -

1 stop26h 08m

Deal found 31-8S$ 1,707

Wed 13-114:35 -

1 stop30h 00m

Thu 11-219:25 -

1 stop26h 40m

Deal found 31-8S$ 1,458

Mon 12-1019:14 -

2 stops28h 31m

Mon 19-1018:00 -

2 stops47h 20m

Deal found 28-8S$ 1,662

Tue 13-1017:59 -

1 stop24h 16m

Thu 22-1020:35 -

1 stop32h 20m

Deal found 29-8S$ 1,707

Fri 13-1118:34 -

1 stop24h 26m

Mon 23-1122:20 -

2 stops25h 09m

Deal found 27-8S$ 1,712

Thu 24-1218:55 -

1 stop32h 10m

Tue 29-1223:15 -

1 stop30h 50m

Deal found 29-8S$ 2,172

Thu 12-1111:25 -

2 stops31h 35m

Tue 24-1122:20 -

2 stops26h 16m

Deal found 27-8S$ 1,712

Mon 12-1021:30 -

1 stop33h 10m

Mon 26-1023:15 -

1 stop30h 50m

Deal found 30-8S$ 2,172

Tue 13-1017:59 -

1 stop24h 16m

Tue 20-1020:35 -

2 stops26h 26m

Deal found 29-8S$ 1,712

Sun 11-1018:15 -

2 stops29h 40m

Sun 18-1013:10 -

3 stops34h 46m

Deal found 27-8S$ 2,126

Thu 12-1120:07 -

2 stops33h 18m

Mon 23-1123:05 -

1 stop31h 00m

Deal found 28-8S$ 2,266

Fri 16-1008:30 -

2 stops33h 45m

Fri 23-1008:45 -

1 stop26h 08m

Deal found 31-8S$ 1,712

Tue 5-118:15 -

2 stops29h 50m

Mon 11-102:00 -

2 stops40h 35m

Deal found 29-8S$ 2,150

Tue 24-1106:10 -

2 stops35h 45m

Wed 2-1222:20 -

1 stop21h 31m

Deal found 31-8S$ 1,719

Thu 12-1117:49 -

1 stop25h 11m

Tue 24-1110:10 -

1 stop25h 20m

Deal found 1-9S$ 2,089

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

Round-trip from	S$ 1,247
One-way from	S$ 553
Popular in	December
Cheapest in	February
Average price	S$ 1,676

Etihad Airways
12-10-19-10
2 total stops
55h 15m total
Washington, D.C. to Singapore

Search Deals

Air China
11-9
1 total stop
43h 50m total
Washington, D.C. to Singapore

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (S$ 220 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (S$ 107 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 13-9

10:15-05:00

2 stops30h 45m

Singapore Changi

Sun 27-9

01:25-11:05

1 stop21h 40m

S$ 1,363

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 28-9

13:15-19:15

1 stop42h 00m

Singapore Changi

Thu 8-10

22:00-00:42

2 stops38h 42m

S$ 1,378

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sun 11-10

15:10-09:40

1 stop30h 30m

Singapore Changi

Wed 28-10

19:25-10:05

1 stop26h 40m

S$ 1,387

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sun 17-1

14:35-09:35

1 stop30h 00m

Singapore Changi

Wed 17-2

19:25-09:05

1 stop26h 40m

S$ 1,392

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 14-11

14:35-09:35

1 stop30h 00m

Singapore Changi

Tue 9-3

19:25-09:05

1 stop26h 40m

S$ 1,417

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 12-11

21:20-17:40

1 stop31h 20m

Singapore Changi

Tue 24-11

10:25-19:25

1 stop46h 00m

S$ 1,449

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 13-1

14:35-09:35

1 stop30h 00m

Singapore Changi

Thu 11-2

19:25-09:05

1 stop26h 40m

S$ 1,458

Fastest return journey

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 18-1

21:20-08:35

1 stop22h 15m

Singapore Changi

Tue 16-2

05:10-19:25

1 stop27h 15m

S$ 1,487

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 12-11

08:00-00:10

2 stops27h 10m

Singapore Changi

Tue 24-11

22:30-09:50

1 stop24h 20m

S$ 1,489

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 12-10

06:00-00:45

2 stops30h 45m

Singapore Changi

Sun 18-10

01:45-23:59

2 stops34h 14m

S$ 1,520

Flights are sorted by cheapest return flights first.

Deals found on 27-8

Showing 1-10 of 60 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$ 1,309). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,523). 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 35m. Korean Air provides one of the quickest options available for as low as S$ 1,621. 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$ 1,309). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,523). 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.

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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$ 2,407	AverageS$ 2,514	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$ 553

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11-9. 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 1 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 1 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 1 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 1 September 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 1 September 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 1 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 1 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 1 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

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 1 September 2026.

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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 1 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 1 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 1 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 1 September 2026.