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

A quick flight from Washington, D.C. to Singapore can take about 23h 25m. Korean Air provides one of the quickest options available for as low as S$ 1,705. Airlines will cover a distance of 15496 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$ 607+ 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 21 August 2026.

Tue 1-923:00 -

1 stop29h 25m

Thu 10-917:55 -

1 stop37h 35m

Deal found 17-8S$ 1,211

Wed 21-1015:10 -

1 stop30h 30m

Wed 28-1019:25 -

1 stop26h 40m

Deal found 20-8S$ 1,268

Fri 28-813:30 -

1 stop27h 30m

Sun 13-907:30 -

1 stop39h 35m

Deal found 19-8S$ 1,270

Sun 30-808:28 -

2 stops27h 27m

Sun 13-922:00 -

1 stop25h 05m

Deal found 20-8S$ 1,274

Wed 30-915:10 -

1 stop30h 30m

Wed 7-1021:00 -

1 stop24h 45m

Deal found 16-8S$ 1,280

Tue 1-919:35 -

2 stops53h 10m

Thu 10-920:00 -

2 stops39h 10m

Deal found 17-8S$ 1,283

Mon 24-815:10 -

1 stop30h 30m

Wed 9-921:00 -

1 stop24h 45m

Deal found 18-8S$ 1,289

Wed 2-915:10 -

1 stop30h 30m

Fri 18-921:00 -

1 stop24h 45m

Deal found 19-8S$ 1,300

Mon 26-1015:35 -

1 stop30h 00m

Mon 16-1119:25 -

1 stop26h 40m

Deal found 18-8S$ 1,306

Thu 17-915:10 -

1 stop30h 30m

Thu 24-921:00 -

1 stop24h 45m

Deal found 18-8S$ 1,307

Tue 1-909:07 -

2 stops32h 08m

Thu 10-907:00 -

2 stops26h 18m

Deal found 19-8S$ 1,308

Mon 7-909:40 -

2 stops55h 35m

Mon 21-906:15 -

2 stops27h 35m

Deal found 19-8S$ 1,352

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 21 August 2026.

Sat 5-908:28 -

2 stops32h 32m

Wed 9-901:25 -

1 stop21h 40m

Deal found 17-8S$ 1,362

Tue 15-906:10 -

2 stops34h 50m

Wed 30-907:30 -

2 stops37h 39m

Deal found 17-8S$ 1,368

Sat 26-915:10 -

1 stop30h 30m

Wed 7-1021:00 -

1 stop24h 45m

Deal found 19-8S$ 1,406

Wed 30-906:00 -

2 stops35h 30m

Wed 7-1020:05 -

2 stops45h 15m

Deal found 16-8S$ 1,658

Thu 8-1011:40 -

2 stops29h 50m

Mon 12-1001:45 -

2 stops34h 31m

Deal found 20-8S$ 1,690

Mon 28-918:50 -

1 stop23h 25m

Wed 7-1020:35 -

2 stops27h 21m

Deal found 19-8S$ 1,705

Thu 29-1019:55 -

1 stop32h 10m

Mon 2-1123:15 -

1 stop30h 50m

Deal found 17-8S$ 2,027

Mon 26-1018:57 -

3 stops41h 53m

Thu 29-1008:15 -

2 stops25h 44m

Deal found 16-8S$ 2,408

Thu 24-1211:30 -

2 stops42h 10m

Tue 12-122:05 -

2 stops35h 54m

Deal found 19-8S$ 2,692

Mon 28-906:00 -

2 stops29h 55m

Thu 8-1007:30 -

1 stop39h 35m

Deal found 20-8S$ 1,362

Sat 3-1015:10 -

1 stop30h 30m

Tue 13-1021:00 -

1 stop24h 45m

Deal found 19-8S$ 1,406

Mon 28-910:15 -

2 stops30h 45m

Sun 4-1007:30 -

1 stop39h 35m

Deal found 19-8S$ 1,362

Sat 26-915:10 -

1 stop30h 30m

Fri 2-1021:00 -

1 stop24h 45m

Deal found 19-8S$ 1,406

Thu 10-906:00 -

2 stops35h 00m

Mon 14-907:30 -

1 stop39h 35m

Deal found 20-8S$ 1,362

Sun 27-917:47 -

1 stop24h 28m

Mon 5-1008:45 -

1 stop26h 08m

Deal found 19-8S$ 1,705

Mon 28-906:59 -

2 stops28h 56m

Tue 6-1001:25 -

2 stops27h 12m

Deal found 19-8S$ 1,376

Sat 5-919:15 -

2 stops29h 15m

Thu 10-913:55 -

2 stops35h 10m

Deal found 17-8S$ 1,836

Tue 17-1117:31 -

3 stops37h 44m

Tue 16-322:20 -

2 stops25h 00m

Deal found 16-8S$ 1,712

Sat 19-909:30 -

2 stops31h 30m

Sat 26-922:00 -

2 stops28h 10m

Deal found 20-8S$ 1,376

Sat 3-1006:00 -

2 stops36h 40m

Sat 10-1008:45 -

1 stop25h 45m

Deal found 18-8S$ 1,718

Sun 17-118:20 -

2 stops29h 45m

Fri 29-114:25 -

3 stops39h 50m

Deal found 16-8S$ 1,891

Sat 3-1021:30 -

1 stop30h 40m

Tue 17-1123:15 -

1 stop30h 50m

Deal found 18-8S$ 2,169

Thu 10-908:08 -

2 stops32h 52m

Thu 24-922:00 -

2 stops38h 41m

Deal found 16-8S$ 1,376

Sat 3-1008:25 -

2 stops28h 20m

Tue 13-1008:45 -

1 stop26h 08m

Deal found 19-8S$ 1,720

Thu 1-1019:15 -

2 stops28h 40m

Thu 8-1015:20 -

2 stops33h 30m

Deal found 17-8S$ 1,921

Sun 6-1218:07 -

2 stops32h 58m

Sat 19-1223:15 -

1 stop30h 50m

Deal found 18-8S$ 2,265

Sat 26-912:15 -

2 stops33h 25m

Fri 2-1021:00 -

2 stops34h 56m

Deal found 19-8S$ 2,125

Tue 15-919:15 -

2 stops28h 40m

Wed 30-915:20 -

3 stops32h 36m

Deal found 17-8S$ 2,075

Sun 6-1218:22 -

2 stops32h 43m

Tue 22-1223:15 -

2 stops32h 50m

Deal found 17-8S$ 2,394

Mon 25-112:40 -

2 stops30h 20m

Wed 3-210:10 -

1 stop24h 43m

Deal found 16-8S$ 2,469

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

Round-trip from	S$ 1,211
One-way from	S$ 607
Popular in	December
Cheapest in	February
Average price	S$ 1,462

Air China
1-9-10-9
2 total stops
67h 00m total
Washington, D.C. to Singapore

Search Deals

Etihad Airways
21-9
1 total stop
30h 30m total
Washington, D.C. to Singapore

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (S$ 236 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 August 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

Sat 5-9

08:28-05:00

2 stops32h 32m

Singapore Changi

Wed 9-9

01:25-11:05

1 stop21h 40m

S$ 1,362

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 28-9

06:00-23:55

2 stops29h 55m

Singapore Changi

Thu 8-10

07:30-11:05

1 stop39h 35m

S$ 1,362

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 28-9

10:15-05:00

2 stops30h 45m

Singapore Changi

Sun 4-10

07:30-11:05

1 stop39h 35m

S$ 1,362

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 10-9

06:00-05:00

2 stops35h 00m

Singapore Changi

Mon 14-9

07:30-11:05

1 stop39h 35m

S$ 1,362

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 15-9

06:10-05:00

2 stops34h 50m

Singapore Changi

Wed 30-9

07:30-09:09

2 stops37h 39m

S$ 1,368

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Mon 28-9

06:59-23:55

2 stops28h 56m

Singapore Changi

Tue 6-10

01:25-16:37

2 stops27h 12m

S$ 1,376

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Sat 19-9

09:30-05:00

2 stops31h 30m

Singapore Changi

Sat 26-9

22:00-14:10

2 stops28h 10m

S$ 1,376

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 10-9

08:08-05:00

2 stops32h 52m

Singapore Changi

Thu 24-9

22:00-00:41

2 stops38h 41m

S$ 1,376

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 26-9

15:10-09:40

1 stop30h 30m

Singapore Changi

Wed 7-10

21:00-09:45

1 stop24h 45m

S$ 1,406

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 3-10

15:10-09:40

1 stop30h 30m

Singapore Changi

Tue 13-10

21:00-09:45

1 stop24h 45m

S$ 1,406

Flights are sorted by cheapest return flights first.

Deals found on 18-8

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$ 1,308). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,496). 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.

Reviews of airlines servicing Singapore

See what other customers who have flown with United Airlines from Washington, D.C. to Singapore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,102 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

United Airlines

7.4

Good

10,102 reviews

United Airlines

7.4

Good

10,102 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

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 25m. Korean Air provides one of the quickest options available for as low as S$ 1,705. Airlines will cover a distance of 15496 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$ 1,308). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,496). 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$ 2,405	AverageS$ 2,512	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights

Fly with Cheapflights

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$ 607

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 21-9. 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 21 August 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 21 August 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 21 August 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 21 August 2026.

Last-minute flights from Washington, D.C. to SingaporeDiscover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 21 August 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 21 August 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 21 August 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 21 August 2026.

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

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Popular in

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Singapore that are best for you.

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.

Reviews of airlines servicing Singapore

See what other customers who have flown with United Airlines from Washington, D.C. to Singapore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Singapore by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Washington, D.C. to Singapore by cabin class

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 21 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

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

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

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Singapore?

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 21 August 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 21 August 2026.

Last-minute flights from Washington, D.C. to Singapore
Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated 21 August 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 21 August 2026.