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

A quick flight from Washington, D.C. to Singapore can take about 22h 25m. Delta provides one of the quickest options available for as low as S$ 1,553. 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, 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$ 641+ 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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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 11 November 2026.

Sat 28-1114:25 -

1 stop30h 20m

Sun 6-1219:25 -

1 stop26h 35m

Deal found 10-11S$ 1,544

Sat 28-1113:30 -

1 stop31h 30m

Tue 8-1223:15 -

1 stop25h 30m

Deal found 11-11S$ 1,546

Sun 29-1106:10 -

2 stops33h 50m

Wed 9-1210:30 -

2 stops26h 17m

Deal found 11-11S$ 1,547

Sat 28-1106:00 -

2 stops34h 00m

Mon 7-1210:30 -

2 stops26h 06m

Deal found 11-11S$ 1,547

Mon 9-1110:35 -

1 stop39h 15m

Mon 16-1110:30 -

1 stop35h 05m

Deal found 8-11S$ 1,553

Sat 28-1114:25 -

1 stop30h 20m

Mon 7-1219:25 -

1 stop26h 35m

Deal found 10-11S$ 1,557

Sat 14-1121:20 -

1 stop44h 30m

Thu 19-1104:35 -

1 stop44h 10m

Deal found 6-11S$ 1,562

Mon 7-1221:20 -

1 stop44h 30m

Sat 12-1210:25 -

1 stop38h 20m

Deal found 10-11S$ 1,566

Mon 30-1113:30 -

1 stop31h 30m

Sun 6-1210:25 -

1 stop46h 00m

Deal found 11-11S$ 1,571

Sun 6-1213:30 -

1 stop28h 20m

Sat 26-1210:25 -

1 stop38h 20m

Deal found 6-11S$ 1,573

Tue 17-1106:00 -

2 stops29h 45m

Thu 26-1108:40 -

2 stops40h 39m

Deal found 7-11S$ 1,580

Sat 5-1221:20 -

1 stop22h 25m

Wed 30-1211:40 -

1 stop37h 05m

Deal found 6-11S$ 1,580

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 11 November 2026.

Sun 29-1106:10 -

2 stops33h 50m

Fri 11-1210:30 -

2 stops26h 17m

Deal found 10-11S$ 1,547

Fri 15-121:20 -

1 stop22h 25m

Tue 26-104:35 -

1 stop44h 10m

Deal found 6-11S$ 1,553

Mon 8-206:59 -

2 stops48h 26m

Thu 11-222:30 -

2 stops31h 30m

Deal found 10-11S$ 1,557

Tue 9-320:05 -

2 stops27h 50m

Tue 16-320:15 -

1 stop32h 40m

Deal found 6-11S$ 1,608

Sat 16-114:25 -

1 stop30h 10m

Sun 24-119:25 -

1 stop26h 35m

Deal found 7-11S$ 1,624

Tue 1-1213:01 -

2 stops29h 59m

Wed 9-1210:10 -

1 stop25h 45m

Deal found 9-11S$ 1,661

Sat 6-306:00 -

2 stops44h 40m

Sat 13-307:30 -

2 stops29h 03m

Deal found 10-11S$ 1,716

Fri 29-113:30 -

1 stop30h 15m

Thu 4-204:35 -

1 stop27h 50m

Deal found 6-11S$ 1,553

Tue 9-207:59 -

2 stops32h 01m

Mon 22-222:30 -

2 stops28h 42m

Deal found 10-11S$ 1,557

Tue 1-1213:00 -

2 stops30h 00m

Wed 9-1210:10 -

2 stops24h 14m

Deal found 9-11S$ 1,661

Fri 22-106:00 -

2 stops29h 15m

Tue 26-101:40 -

2 stops28h 19m

Deal found 9-11S$ 1,679

Sat 16-113:30 -

1 stop31h 30m

Wed 27-123:15 -

1 stop33h 10m

Deal found 7-11S$ 1,553

Wed 7-408:20 -

2 stops27h 35m

Wed 21-422:00 -

2 stops26h 44m

Deal found 11-11S$ 1,562

Tue 27-418:00 -

1 stop24h 45m

Tue 11-509:00 -

1 stop24h 53m

Deal found 10-11S$ 1,670

Fri 29-113:30 -

1 stop30h 15m

Thu 4-205:10 -

1 stop27h 15m

Deal found 9-11S$ 1,553

Tue 1-1206:00 -

2 stops34h 00m

Fri 11-1210:30 -

2 stops25h 11m

Deal found 8-11S$ 1,725

Mon 25-113:00 -

2 stops31h 35m

Sun 31-119:25 -

2 stops36h 32m

Deal found 6-11S$ 1,899

Mon 8-209:36 -

2 stops33h 24m

Thu 11-210:10 -

1 stop23h 50m

Deal found 7-11S$ 1,671

Mon 4-121:20 -

1 stop23h 40m

Sat 16-110:25 -

1 stop46h 00m

Deal found 10-11S$ 1,578

Fri 22-109:36 -

2 stops32h 19m

Wed 27-110:10 -

1 stop25h 20m

Deal found 9-11S$ 1,729

Wed 6-113:30 -

1 stop39h 10m

Sat 16-110:25 -

1 stop38h 20m

Deal found 10-11S$ 1,578

Mon 1-213:30 -

1 stop31h 30m

Sun 7-210:25 -

1 stop38h 20m

Deal found 9-11S$ 1,579

Tue 5-106:00 -

2 stops28h 40m

Sat 16-110:45 -

2 stops31h 38m

Deal found 10-11S$ 1,981

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

Round-trip from	S$ 1,524
One-way from	S$ 641
Popular in	December
Cheapest in	February
Average price	S$ 1,461

Etihad Airways
23-1-11-2
2 total stops
56h 45m total
Washington, D.C. to Singapore

Search Deals

Etihad Airways
27-1-31-12
1 total stop
30h 10m total
Washington, D.C. to Singapore

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (S$ 284 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (S$ 133 potential savings vs. average return price).

Search Deals

Average for round-trip flights in November 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

14:25-09:35

1 stop30h 10m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 641

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 18-1

14:25-09:35

1 stop30h 10m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 655

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 24-2

07:04-10:25

2 stops38h 21m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 678

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 13-2

14:25-09:35

1 stop30h 10m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 702

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Wed 27-1

13:00-09:35

2 stops31h 35m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 706

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$ 728

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 18-1

14:25-12:25

3 stops33h 00m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 737

Fastest return journey

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Fri 15-1

06:00-21:55

2 stops26h 55m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 743

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 20-1

06:00-15:40

2 stops44h 40m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 766

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Mon 18-1

17:00-17:45

1 stop35h 45m

Singapore Changi

Wed 31-12

00:00-11:30

Nonstop0h 00m

S$ 773

Flights are sorted by cheapest return flights first.

Deals found on 6-11

Showing 1-10 of 43 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$ 1,274). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,610). 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 22h 25m. Delta provides one of the quickest options available for as low as S$ 1,553. 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, 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$ 1,274). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,610). 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

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Top airline flying from Washington, D.C. to Singapore

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	CheapestS$ 2,421	AverageS$ 2,528	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$ 641

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28-1. 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 11 November 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 11 November 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 11 November 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 11 November 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 11 November 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 11 November 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 11 November 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 11 November 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 11 November 2026.

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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 11 November 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 11 November 2026.

Last-minute flights from Washington, D.C. to Singapore
Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 11 November 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 11 November 2026.