How far in advance should I book a flight from Singapore to Washington, D.C. Dulles Intl Airport?

Users have found that booking a flight from Singapore to Washington, D.C. Dulles Intl Airport at least 23 days early can save you up to 138% on average compared to booking a flight this week. If booking 23 days before your flight isn’t an option for you, users have found flights from Singapore to Washington, D.C. Dulles Intl Airport for as little as $1,096 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,167 for flights departing within the next 3 days.

What is the cheapest month to fly from Singapore to Washington, D.C. Dulles Intl Airport?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, August can be a great choice for travel to Washington, D.C. Dulles Intl Airport. Flights to Washington, D.C. Dulles Intl Airport from Singapore in August are about $1,270 on average during August, but can be found for as low as $593.

What is the cheapest time of day to fly from SG to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Singapore to Washington, D.C. Dulles Intl Airport as you normally would.

Can I find deals for flights from Singapore to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Singapore to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Singapore to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Singapore to Dulles Intl.

Can I find deals for business class flights from Singapore to Dulles Intl?

Yes. Cheapflights offers flight deals from Singapore to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$1,039+ Flights from Singapore to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Singapore to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$717 (oojo)
One-way from	$487 (oojo)
Popular in	July
Cheapest in	August
Average price	$1,194

Provider with most accurate pricing for Singapore Changi-Washington, D.C. (WAS) flight deals.

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Provider most trusted by Cheapflights users for Singapore Changi-Washington, D.C. (WAS) flights.

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From Singapore to Washington, D.C. Dulles Intl

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One-way flight from Singapore to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 2% potential increase in price ($38 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($24 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

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Find flight deals from Singapore to Dulles Intl

Cheapest flights from Singapore to Dulles Intl
Explore the most affordable flight options available from Singapore to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

Mon 3/105:00 pmSIN - IAD

1 stop34h 45mSAUDIA

Sat 3/227:10 pmIAD - SIN

1 stop32h 20mSAUDIA

Deal found 2/22

$717

Mon 3/109:30 amSIN - IAD

1 stop41h 40mAir China

Sat 3/225:35 pmIAD - SIN

2 stops49h 15mAir China

Deal found 2/22

$938

Tue 4/89:10 amSIN - IAD

1 stop37h 35mTurkish Airlines

Tue 4/1512:30 pmIAD - SIN

1 stop41h 25mTurkish Airlines

Deal found 2/21

$947

Wed 4/163:45 amSIN - IAD

1 stop24h 00mMultiple Airlines

Fri 4/259:40 pmIAD - SIN

2 stops31h 40mMultiple Airlines

Deal found 2/22

$981

Tue 4/87:45 pmSIN - IAD

2 stops36h 00mIndiGo

Tue 4/1512:30 pmIAD - SIN

2 stops40h 50mIndiGo

Deal found 2/21

$993

Tue 4/811:05 amSIN - IAD

1 stop40h 35mUnited Airlines

Tue 4/153:47 pmIAD - SIN

2 stops26h 58mUnited Airlines

Deal found 2/22

$1,039

Tue 3/46:35 amSIN - IAD

2 stops27h 06mAir Canada

Wed 3/1912:55 pmIAD - SIN

2 stops31h 00mAir Canada

Deal found 2/22

$1,088

Wed 3/512:05 amSIN - IAD

1 stop29h 20mSWISS

Thu 3/209:45 pmIAD - SIN

1 stop32h 10mSWISS

Deal found 2/21

$1,176

Tue 4/111:25 pmSIN - IAD

1 stop32h 00mLufthansa

Mon 4/285:35 pmIAD - SIN

2 stops25h 15mLufthansa

Deal found 2/21

$1,201

Best flights from Singapore to Dulles Intl
Discover carefully curated flight deals from Singapore to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 22, 2025.

Mon 3/105:00 pmSIN - IAD

1 stop34h 45mSAUDIA

Sat 3/227:10 pmIAD - SIN

1 stop32h 20mSAUDIA

Deal found 2/22

$717

Mon 3/109:30 amSIN - IAD

1 stop41h 40mAir China

Sat 3/225:35 pmIAD - SIN

2 stops49h 15mAir China

Deal found 2/22

$938

Tue 4/89:10 amSIN - IAD

1 stop37h 35mTurkish Airlines

Tue 4/1512:30 pmIAD - SIN

1 stop41h 25mTurkish Airlines

Deal found 2/21

$947

Wed 4/163:45 amSIN - IAD

1 stop24h 00mMultiple Airlines

Fri 4/259:40 pmIAD - SIN

2 stops31h 40mMultiple Airlines

Deal found 2/22

$981

Tue 4/87:45 pmSIN - IAD

2 stops36h 00mIndiGo

Tue 4/1512:30 pmIAD - SIN

2 stops40h 50mIndiGo

Deal found 2/21

$993

Tue 4/811:05 amSIN - IAD

1 stop40h 35mUnited Airlines

Tue 4/153:47 pmIAD - SIN

2 stops26h 58mUnited Airlines

Deal found 2/22

$1,039

Tue 3/46:35 amSIN - IAD

2 stops27h 06mAir Canada

Tue 3/2512:55 pmIAD - SIN

2 stops31h 00mAir Canada

Deal found 2/22

$1,088

Wed 3/512:05 amSIN - IAD

1 stop29h 20mSWISS

Thu 3/209:45 pmIAD - SIN

1 stop32h 10mSWISS

Deal found 2/22

$1,176

Wed 3/1211:45 pmSIN - IAD

1 stop33h 20mLufthansa

Tue 3/256:35 pmIAD - SIN

1 stop34h 30mLufthansa

Deal found 2/22

$1,197

Last-minute flights from Singapore to Dulles Intl
Discover last-minute flight deals from Singapore to Dulles Intl. Data last updated February 22, 2025 and is based on user searches.

Fri 2/282:30 amSIN - IAD

1 stop42h 40mEmirates

Mon 3/2411:15 amIAD - SIN

1 stop33h 10mEmirates

Deal found 2/20

$1,687

Sat 3/15:00 pmSIN - IAD

1 stop34h 45mSAUDIA

Sat 3/227:10 pmIAD - SIN

1 stop32h 20mSAUDIA

Deal found 2/20

$797

Sun 3/211:15 pmSIN - IAD

1 stop29h 20mBritish Airways

Fri 3/2110:55 pmIAD - SIN

1 stop29h 00mBritish Airways

Deal found 2/20

$1,329

Sun 3/23:15 amSIN - IAD

1 stop25h 40mAmerican Airlines

Wed 3/199:05 pmIAD - SIN

1 stop23h 40mAmerican Airlines

Deal found 2/22

$1,771

Mon 3/35:00 pmSIN - IAD

1 stop34h 45mMultiple Airlines

Sat 3/223:00 pmIAD - SIN

2 stops38h 20mMultiple Airlines

Deal found 2/20

$996

Mon 3/311:55 pmSIN - IAD

1 stop27h 15mAir China

Sat 3/225:35 pmIAD - SIN

3 stops35h 55mAir China

Deal found 2/22

$1,208

Mon 3/312:05 amSIN - IAD

1 stop29h 20mSWISS

Fri 3/216:50 pmIAD - SIN

2 stops35h 05mSWISS

Deal found 2/20

$1,382

Mon 3/39:20 pmSIN - IAD

2 stops31h 35mQatar Airways

Fri 3/2111:35 amIAD - SIN

1 stop21h 40mQatar Airways

Deal found 2/22

$1,521

Tue 3/410:25 amSIN - IAD

1 stop46h 05mTurkish Airlines

Fri 3/213:00 pmIAD - SIN

1 stop38h 35mTurkish Airlines

Deal found 2/20

$1,004

Tue 3/46:35 amSIN - IAD

2 stops27h 06mAir Canada

Wed 3/1912:55 pmIAD - SIN

2 stops31h 00mAir Canada

Deal found 2/22

$1,088

Tue 3/410:10 amSIN - IAD

2 stops25h 20mUnited Airlines

Fri 3/216:22 amIAD - SIN

1 stop36h 38mUnited Airlines

Deal found 2/20

$1,211

Tue 3/410:55 amSIN - IAD

1 stop40h 45mLufthansa

Wed 3/196:50 pmIAD - SIN

2 stops34h 15mLufthansa

Deal found 2/22

$1,232

One-way flights from Singapore to Dulles Intl
Search for one-way flight options from Singapore to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated February 22, 2025.

Fri 6/62:30 amSIN - IAD

1 stop25h 15mSAUDIA

Deal found 2/21

$487

Tue 4/153:15 pmSIN - IAD

2 stops38h 07mMultiple Airlines

Deal found 2/21

$569

Sat 6/77:45 pmSIN - IAD

2 stops36h 00mIndiGo

Deal found 2/21

$627

Fri 3/79:30 amSIN - IAD

1 stop41h 40mAir China

Deal found 2/21

$637

Sun 3/3010:25 amSIN - IAD

1 stop45h 20mTurkish Airlines

Deal found 2/22

$710

Thu 6/269:10 amSIN - IAD

1 stop33h 35mAir Canada

Deal found 2/22

$747

Sun 6/13:10 amSIN - IAD

1 stop24h 30mQatar Airways

Deal found 2/21

$870

Wed 4/98:40 pmSIN - IAD

3 stops31h 34mUnited Airlines

Deal found 2/21

$886

Tue 4/83:10 amSIN - IAD

1 stop24h 30mJetBlue

Deal found 2/22

$907

Sat 4/129:10 pmSIN - IAD

1 stop31h 25mEtihad Airways

Deal found 2/20

$914

Mon 6/2311:30 pmSIN - IAD

1 stop27h 55mSWISS

Deal found 2/22

$918

Sat 3/291:25 amSIN - IAD

2 stops40h 15mCathay Pacific

Deal found 2/22

$923

Find flights from Singapore to Dulles Intl within your budget

Fly from

Fly to

Route

Depart

Return

Price

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Mon 3/10

5:00 pm-3:45 pm

1 stop34h 45m

Washington, D.C. Dulles Intl

Sat 3/22

7:10 pm-3:30 pm

1 stop32h 20m

$717

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Mon 3/10

9:30 am-3:10 pm

1 stop41h 40m

Washington, D.C. Dulles Intl

Sat 3/22

5:35 pm-6:50 am

2 stops49h 15m

$938

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Tue 4/8

9:10 am-10:45 am

1 stop37h 35m

Washington, D.C. Dulles Intl

Tue 4/15

12:30 pm-5:55 pm

1 stop41h 25m

$947

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Wed 4/16

3:45 am-3:45 pm

1 stop24h 00m

Washington, D.C. Dulles Intl

Fri 4/25

9:40 pm-5:20 pm

2 stops31h 40m

$981

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Tue 4/8

7:45 pm-7:45 pm

2 stops36h 00m

Washington, D.C. Dulles Intl

Tue 4/15

12:30 pm-5:20 pm

2 stops40h 50m

$993

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Tue 4/8

11:05 am-3:40 pm

1 stop40h 35m

Washington, D.C. Dulles Intl

Tue 4/15

3:47 pm-6:45 am

2 stops26h 58m

$1,039

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Tue 3/4

6:35 am-8:41 pm

2 stops27h 06m

Washington, D.C. Dulles Intl

Wed 3/19

12:55 pm-7:55 am

2 stops31h 00m

$1,088

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Wed 3/5

12:05 am-4:25 pm

1 stop29h 20m

Washington, D.C. Dulles Intl

Thu 3/20

9:45 pm-5:55 pm

1 stop32h 10m

$1,176

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Tue 4/1

11:25 pm-7:25 pm

1 stop32h 00m

Washington, D.C. Dulles Intl

Mon 4/28

5:35 pm-6:50 am

2 stops25h 15m

$1,201

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Fri 6/6

2:30 am-3:45 pm

1 stop25h 15m

$487

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 28 results

Best time to book a flight from Singapore to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Singapore with our price prediction graph.

Estimated round-trip 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.

Travel insights for flights from Singapore to Dulles Intl

Get recent, data-driven insights about flights from Singapore to Dulles Intl including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Singapore to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Singapore to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Singapore to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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.

Rainfall in Dulles Intl by month

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Singapore to Washington, D.C., such as China Airlines, Emirates and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

China Airlines

8.2

Very good

726 reviews

Reviews

1 / 20

6.0

Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

China Airlines

8.2

Very good

726 reviews

China Airlines

8.2

Very good

726 reviews

Reviews

1 / 20

6.0

Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

Emirates

8.1

Very good

3,275 reviews

China Airlines

8.2

Very good

726 reviews

Reviews

1 / 20

6.0

Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

Delta

8.0

Very good

8,203 reviews

China Airlines

8.2

Very good

726 reviews

Reviews

1 / 20

6.0

Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

SWISS

7.5

Good

1,566 reviews

China Airlines

8.2

Very good

726 reviews

Reviews

1 / 20

6.0

Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

Cathay Pacific

7.5

Good

822 reviews

China Airlines

8.2

Very good

726 reviews

Reviews

1 / 20

6.0

Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

Related info for your journey

What are the cheapest airlines to fly from Singapore to Washington, D.C. Dulles Intl Airport one-way?
The cheapest airlines for a one-way flight from Singapore to Washington, D.C. Dulles Intl Airport are SAUDIA ($487), IndiGo ($627), and Air China ($637).
Can I find deals for flights from Singapore to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Singapore to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Singapore to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Singapore to Dulles Intl.
Can I find deals for business class flights from Singapore to Dulles Intl?
Yes. Cheapflights offers flight deals from Singapore to Dulles Intl 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 Singapore to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Singapore to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Singapore to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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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Alexandria

Fairfax

Springfield

Rockville

Tysons

Gaithersburg

Silver Spring

Fredericksburg

Linthicum Heights

Laurel

Falls Church

Woodbridge

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Easton

Herndon

Bowie

Reston

National Harbor

Oxon Hill

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Singapore to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$870	Average$1,217	FlexibilityNo cancel fee	On-time69%
Qatar Airways	Cheapest$1,333	Average$1,372	FlexibilityNo cancel fee	On-time68%

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$487+ Cheap flights from Singapore to Dulles Intl (IAD)

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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Singapore to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Singapore to Dulles Intl

Keep the following information in mind while searching for Singapore to Dulles Intl flight deals. Data was last updated February 22, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Singapore to Dulles Intl

Cheapest flights from Singapore to Dulles IntlExplore the most affordable flight options available from Singapore to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

Explore the most affordable flight options available from Singapore to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

Find flights from Singapore to Dulles Intl within your budget

Best time to book a flight from Singapore to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Singapore with our price prediction graph.

Travel insights for flights from Singapore to Dulles Intl

Get recent, data-driven insights about flights from Singapore to Dulles Intl including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Singapore to Washington, D.C. Dulles Intl Airport?

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Singapore to Washington, D.C., such as China Airlines, Emirates and Delta. 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

Find useful and relevant information for your journey from Singapore to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from Singapore to Washington, D.C. Dulles Intl Airport one-way?

Can I find deals for flights from Singapore to Dulles Intl that include hotel bookings?

How can I find direct flights from Singapore to Dulles Intl?

Can I find deals for business class flights from Singapore to Dulles Intl?

What is the cheapest month to book a flight from Singapore to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Singapore?

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Alternative routes for Singapore to Dulles Intl

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Top 2 airlines flying from Singapore to Dulles Intl

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Cheapest flights from Singapore to Dulles Intl
Explore the most affordable flight options available from Singapore to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.