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

A quick flight from Washington, D.C. to Singapore can take about 30h 20m. Korean Air provides one of the quickest options available for as low as S$ 1,655. 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$ 551+ 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 7 September 2026.

Wed 9-909:03 -

2 stops36h 02m

Thu 17-917:55 -

1 stop37h 35m

Deal found 7-9S$ 1,281

Tue 3-1122:00 -

1 stop29h 15m

Thu 12-1123:55 -

1 stop31h 35m

Deal found 4-9S$ 1,283

Tue 3-1122:00 -

1 stop43h 50m

Mon 9-1123:55 -

1 stop31h 35m

Deal found 4-9S$ 1,292

Thu 12-1106:00 -

2 stops36h 00m

Tue 24-1108:40 -

2 stops38h 49m

Deal found 3-9S$ 1,299

Thu 12-1109:55 -

2 stops32h 05m

Tue 24-1108:40 -

2 stops24h 43m

Deal found 3-9S$ 1,299

Sun 20-915:10 -

3 stops33h 00m

Thu 24-917:55 -

1 stop37h 35m

Deal found 4-9S$ 1,300

Mon 21-909:07 -

2 stops56h 08m

Tue 6-1007:00 -

2 stops40h 13m

Deal found 5-9S$ 1,307

Wed 9-915:10 -

1 stop30h 30m

Wed 23-921:00 -

1 stop24h 45m

Deal found 4-9S$ 1,311

Mon 2-1117:46 -

2 stops48h 14m

Tue 17-1108:40 -

2 stops39h 48m

Deal found 4-9S$ 1,312

Tue 8-915:10 -

1 stop30h 30m

Wed 14-1021:00 -

1 stop24h 45m

Deal found 7-9S$ 1,318

Wed 21-1015:10 -

1 stop30h 30m

Wed 28-1019:25 -

1 stop26h 40m

Deal found 3-9S$ 1,321

Wed 9-909:07 -

2 stops56h 08m

Thu 17-907:00 -

2 stops50h 18m

Deal found 7-9S$ 1,323

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 7 September 2026.

Mon 11-114:35 -

1 stop30h 00m

Sun 17-119:25 -

1 stop26h 40m

Deal found 6-9S$ 1,469

Thu 12-1108:00 -

2 stops32h 00m

Mon 23-1101:40 -

1 stop21h 10m

Deal found 4-9S$ 1,476

Wed 3-307:40 -

2 stops32h 20m

Wed 17-310:30 -

2 stops24h 48m

Deal found 6-9S$ 1,483

Mon 12-1006:00 -

2 stops30h 45m

Mon 19-1001:45 -

2 stops39h 47m

Deal found 6-9S$ 1,513

Fri 23-1006:00 -

2 stops30h 20m

Thu 29-1002:20 -

2 stops27h 43m

Deal found 7-9S$ 1,655

Thu 4-317:27 -

2 stops33h 13m

Tue 16-307:30 -

2 stops28h 46m

Deal found 4-9S$ 1,697

Fri 23-1008:05 -

1 stop34h 10m

Fri 30-1010:10 -

1 stop31h 33m

Deal found 7-9S$ 1,699

Thu 22-1021:30 -

1 stop33h 10m

Sun 6-1223:05 -

1 stop31h 00m

Deal found 6-9S$ 2,020

Wed 3-320:05 -

3 stops50h 35m

Wed 17-315:20 -

3 stops37h 35m

Deal found 3-9S$ 2,709

Mon 1-318:30 -

2 stops36h 55m

Sun 7-301:40 -

1 stop21h 10m

Deal found 4-9S$ 1,476

Tue 16-207:30 -

2 stops27h 40m

Mon 1-310:40 -

2 stops25h 53m

Deal found 3-9S$ 1,483

Tue 12-111:50 -

1 stop43h 35m

Fri 22-101:40 -

2 stops28h 50m

Deal found 6-9S$ 1,483

Thu 12-1111:25 -

2 stops31h 35m

Tue 24-1122:20 -

2 stops25h 09m

Deal found 6-9S$ 1,704

Sun 20-906:30 -

2 stops29h 50m

Wed 23-901:55 -

2 stops26h 29m

Deal found 4-9S$ 1,746

Sat 16-117:00 -

2 stops42h 15m

Sat 30-101:40 -

2 stops29h 25m

Deal found 6-9S$ 1,490

Mon 28-907:25 -

2 stops28h 30m

Thu 8-1022:00 -

2 stops35h 20m

Deal found 5-9S$ 1,673

Sat 16-106:40 -

2 stops28h 35m

Sat 30-101:40 -

2 stops28h 50m

Deal found 6-9S$ 1,490

Tue 6-1018:15 -

2 stops30h 15m

Sun 11-1002:00 -

2 stops39h 20m

Deal found 4-9S$ 1,829

Tue 6-1017:59 -

1 stop24h 16m

Tue 13-1008:45 -

1 stop26h 08m

Deal found 7-9S$ 1,908

Mon 1-316:25 -

3 stops31h 40m

Sun 7-302:00 -

2 stops40h 25m

Deal found 5-9S$ 1,859

Mon 1-309:00 -

2 stops31h 00m

Mon 8-322:30 -

2 stops28h 20m

Deal found 3-9S$ 1,561

Thu 12-1117:49 -

1 stop25h 11m

Tue 24-1122:20 -

2 stops23h 36m

Deal found 6-9S$ 2,037

Fri 23-1006:35 -

3 stops42h 30m

Fri 30-1014:25 -

2 stops36h 25m

Deal found 7-9S$ 1,973

Fri 23-1012:57 -

2 stops29h 18m

Fri 30-1010:10 -

1 stop24h 20m

Deal found 7-9S$ 2,144

Fri 23-1016:20 -

3 stops32h 45m

Fri 30-1014:25 -

2 stops41h 35m

Deal found 7-9S$ 1,996

Sun 27-1214:35 -

1 stop30h 00m

Fri 1-119:25 -

1 stop26h 40m

Deal found 7-9S$ 2,978

Mon 9-1118:15 -

2 stops29h 50m

Mon 30-1114:25 -

2 stops28h 15m

Deal found 7-9S$ 2,035

Sat 26-1211:50 -

1 stop28h 10m

Fri 1-101:40 -

2 stops27h 27m

Deal found 7-9S$ 2,725

Mon 9-1117:49 -

1 stop25h 11m

Mon 30-1122:20 -

2 stops24h 27m

Deal found 7-9S$ 2,412

Mon 1-318:00 -

1 stop25h 00m

Mon 8-310:10 -

1 stop24h 43m

Deal found 3-9S$ 2,460

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

Round-trip from	S$ 1,283
One-way from	S$ 551
Popular in	December
Cheapest in	February
Average price	S$ 1,668

Air China
3-11-12-11
2 total stops
60h 50m 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$ 224 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (S$ 109 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

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

Sun 13-9

15:10-09:40

1 stop30h 30m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 729

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Mon 5-10

17:00-00:45

2 stops43h 45m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 736

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Sat 7-11

16:00-07:00

2 stops50h 00m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 741

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 24-2

06:10-11:50

2 stops40h 40m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 759

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 14-11

11:50-05:00

1 stop28h 10m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 762

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Wed 27-1

07:00-00:15

2 stops28h 15m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 769

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 28-1

18:30-20:25

2 stops36h 55m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 769

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Sun 18-10

11:30-06:10

2 stops30h 40m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 790

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Mon 14-9

07:42-06:10

2 stops34h 28m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 791

Flights are sorted by cheapest return flights first.

Deals found on 6-9

Showing 1-10 of 57 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$ 1,299). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,543). 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 30h 20m. Korean Air provides one of the quickest options available for as low as S$ 1,655. 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$ 1,299). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,543). 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$ 551

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 7 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 7 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 7 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 7 September 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 7 September 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 7 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 7 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 7 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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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 7 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?

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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 7 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 7 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 7 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 7 September 2026.