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

A quick flight from Washington, D.C. to Singapore can take about 23h 40m. Turkish Airlines provides one of the quickest options available for as low as S$ 1,547. 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$ 586+ 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 30 October 2026.

Mon 30-1113:30 -

1 stop39h 10m

Fri 11-1211:40 -

1 stop37h 05m

Deal found 29-10S$ 1,496

Sun 22-1106:00 -

2 stops34h 00m

Sun 13-1210:30 -

2 stops25h 11m

Deal found 29-10S$ 1,501

Tue 3-1118:12 -

2 stops45h 48m

Tue 10-1122:30 -

2 stops39h 11m

Deal found 29-10S$ 1,501

Fri 27-1121:20 -

1 stop22h 25m

Sun 13-1223:15 -

1 stop25h 30m

Deal found 28-10S$ 1,506

Sun 6-1207:00 -

2 stops28h 45m

Mon 14-1217:45 -

1 stop37h 45m

Deal found 29-10S$ 1,507

Sun 6-1221:20 -

1 stop31h 20m

Mon 14-1211:40 -

1 stop44h 45m

Deal found 29-10S$ 1,508

Sat 5-1221:20 -

1 stop23h 40m

Thu 10-1210:25 -

1 stop38h 20m

Deal found 27-10S$ 1,510

Sat 28-1121:20 -

1 stop23h 40m

Sun 13-1223:15 -

1 stop25h 30m

Deal found 28-10S$ 1,512

Sun 15-1114:25 -

1 stop30h 10m

Mon 23-1117:45 -

1 stop37h 45m

Deal found 29-10S$ 1,520

Thu 3-1211:50 -

1 stop28h 10m

Sun 13-1222:30 -

2 stops28h 31m

Deal found 25-10S$ 1,523

Sun 29-1121:20 -

1 stop22h 25m

Sat 12-1205:10 -

1 stop27h 15m

Deal found 28-10S$ 1,524

Tue 10-1106:00 -

2 stops34h 40m

Tue 1-1220:20 -

2 stops46h 14m

Deal found 29-10S$ 1,529

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 30 October 2026.

Tue 1-1213:30 -

1 stop28h 20m

Tue 15-1223:15 -

1 stop25h 30m

Deal found 29-10S$ 1,496

Tue 9-307:00 -

2 stops28h 15m

Tue 16-310:30 -

1 stop36h 20m

Deal found 28-10S$ 1,519

Sat 14-1120:05 -

1 stop23h 40m

Wed 2-1219:30 -

2 stops33h 25m

Deal found 26-10S$ 1,547

Thu 12-1114:25 -

1 stop30h 10m

Tue 24-1117:00 -

2 stops29h 00m

Deal found 28-10S$ 1,626

Fri 5-323:55 -

1 stop23h 10m

Wed 17-313:15 -

1 stop20h 40m

Deal found 27-10S$ 1,867

Thu 26-1112:50 -

2 stops30h 10m

Thu 17-1210:10 -

1 stop25h 20m

Deal found 26-10S$ 1,962

Sat 5-1221:20 -

1 stop23h 40m

Fri 11-1211:40 -

1 stop44h 45m

Deal found 29-10S$ 1,547

Sat 16-120:05 -

2 stops25h 25m

Sun 31-121:20 -

2 stops31h 35m

Deal found 25-10S$ 1,566

Wed 10-314:25 -

1 stop30h 10m

Mon 15-317:00 -

2 stops29h 00m

Deal found 27-10S$ 1,628

Thu 3-1206:00 -

2 stops34h 00m

Sun 13-1210:30 -

2 stops38h 09m

Deal found 26-10S$ 1,715

Sat 14-1106:00 -

2 stops40h 50m

Wed 2-1212:55 -

2 stops29h 39m

Deal found 26-10S$ 1,665

Tue 9-317:30 -

1 stop25h 30m

Tue 16-310:10 -

1 stop22h 29m

Deal found 27-10S$ 1,972

Tue 10-1120:05 -

2 stops25h 25m

Mon 30-1121:20 -

2 stops31h 35m

Deal found 28-10S$ 1,793

Thu 31-1213:30 -

1 stop28h 20m

Thu 14-110:25 -

1 stop46h 00m

Deal found 28-10S$ 1,847

Mon 1-312:55 -

2 stops30h 05m

Mon 8-310:10 -

1 stop23h 29m

Deal found 27-10S$ 1,972

Wed 30-1206:00 -

2 stops34h 00m

Wed 13-122:30 -

2 stops26h 04m

Deal found 26-10S$ 2,176

Thu 1-414:00 -

2 stops28h 45m

Thu 29-409:00 -

1 stop24h 53m

Deal found 29-10S$ 1,982

Wed 6-107:00 -

2 stops27h 40m

Wed 20-110:10 -

1 stop25h 20m

Deal found 26-10S$ 1,987

Wed 25-1117:49 -

1 stop25h 11m

Sat 5-1222:20 -

2 stops25h 18m

Deal found 25-10S$ 2,031

Thu 14-107:45 -

1 stop35h 15m

Sun 24-110:10 -

1 stop25h 20m

Deal found 29-10S$ 2,035

Sat 16-117:54 -

1 stop25h 06m

Sun 31-110:10 -

1 stop25h 20m

Deal found 26-10S$ 2,100

Fri 4-1207:00 -

2 stops28h 45m

Sat 12-1222:20 -

2 stops28h 42m

Deal found 28-10S$ 2,110

Mon 25-117:54 -

1 stop25h 06m

Sun 28-210:10 -

1 stop23h 50m

Deal found 25-10S$ 2,228

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

Round-trip from	S$ 1,493
One-way from	S$ 586
Popular in	December
Cheapest in	February
Average price	S$ 1,502

Ethiopian Air
7-4-20-4
4 total stops
59h 00m total
Washington, D.C. to Singapore

Search Deals

18-11-31-12
3 total stops
55h 05m total
Washington, D.C. to Singapore

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (S$ 252 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (S$ 118 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 24-2

07:00-19:40

2 stops47h 40m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 677

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Sat 13-2

14:23-12:50

2 stops57h 27m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 699

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 27-1

18:15-20:25

2 stops61h 10m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 709

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 28-1

07:00-00:15

2 stops28h 15m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 788

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sun 10-1

14:25-09:35

1 stop30h 10m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 809

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 11-11

06:00-15:40

2 stops44h 40m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 823

Fastest return journey

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 30-12

21:20-08:45

1 stop22h 25m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 832

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 7-11

06:00-05:40

2 stops34h 40m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 844

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Thu 31-12

09:30-10:15

3 stops59h 45m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 987

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Sat 7-11

12:00-09:35

2 stops32h 35m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 1,072

Flights are sorted by cheapest return flights first.

Deals found on 25-10

Showing 1-10 of 37 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$ 1,242). 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 80 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 23h 40m. Turkish Airlines provides one of the quickest options available for as low as S$ 1,547. 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$ 1,242). 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$ 2,422	AverageS$ 2,530	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$ 586

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18-11. 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 30 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 30 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 30 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 30 October 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 30 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 30 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 30 October 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 80 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 30 October 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 30 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 30 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 30 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 30 October 2026.