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Dulles Intl

$442+ Cheap flights from Singapore (SIN) 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
SIN — IAD
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Singapore Changi to Washington, D.C. Dulles Intl are usually found in March or February, booked 38 days in advance, depart on a Friday or Tuesday and return on a Friday

Cheap flight deals from Singapore to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Singapore (SIN) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$870
(Priceline)

One-way from

$442
(SmartFares)

Popular in

November

Cheapest in

March

Average price

$1,437
From Singapore Changi to Washington, D.C. Dulles Intl
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One-way flight from Singapore Changi to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 4% potential increase in price ($62 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This Priceline deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/289:10 amSIN - IAD
2 stops36h 28mAir Canada
Sun 10/199:35 amIAD - SIN
2 stops33h 30mAir Canada
Deal found 9/15$870
This Air Canada deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/59:10 amSIN - IAD
2 stops36h 28mAir Canada
Sun 10/199:35 amIAD - SIN
2 stops33h 30mAir Canada
Deal found 9/15$871
This Air Canada deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/18:50 amSIN - IAD
2 stops24h 04mAir Canada
Sat 11/810:11 pmIAD - SIN
2 stops43h 49mAir Canada
Deal found 9/17$873
This Jettzy deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:10 pmSIN - IAD
1 stop23h 55mANA
Sat 10/251:20 pmIAD - SIN
2 stops53h 35mANA
Deal found 9/15$922
This Booking.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/167:45 pmSIN - IAD
2 stops36h 00mIndiGo
Fri 11/79:10 pmIAD - SIN
2 stops31h 10mIndiGo
Deal found 9/17$975
This Air Canada deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/79:10 amSIN - IAD
2 stops36h 28mAir Canada
Thu 10/163:36 pmIAD - SIN
2 stops27h 29mAir Canada
Deal found 9/16$987
This Booking.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/177:40 pmSIN - IAD
2 stops36h 35mIndiGo
Sun 11/239:10 pmIAD - SIN
2 stops31h 10mIndiGo
Deal found 9/17$989
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:40 amSIN - IAD
2 stops26h 00mDelta
Thu 11/67:35 amIAD - SIN
2 stops27h 35mDelta
Deal found 9/15$994
This Air Canada deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/99:10 amSIN - IAD
2 stops36h 28mAir Canada
Sat 10/255:22 pmIAD - SIN
2 stops49h 38mAir Canada
Deal found 9/15$995
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/161:35 amSIN - IAD
2 stops36h 19mDelta
Sun 11/236:00 amIAD - SIN
2 stops34h 00mDelta
Deal found 9/17$998

Cheapflights Fare Finder

 
Customize your flight search to find flights from Singapore to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Singapore to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Singapore

Fly to

Dulles Intl

Route

Depart

Return

Price

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Wed 3/11

10:30 pm-10:50 am

1 stop24h 20m

Washington, D.C. Dulles Intl

Sun 3/15

12:50 pm-5:00 am

1 stop28h 10m

$993

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 11/16

1:35 am-12:54 am

2 stops36h 19m

Washington, D.C. Dulles Intl

Sun 11/23

6:00 am-5:00 am

2 stops34h 00m

$998

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Fri 10/31

2:00 am-7:23 am

2 stops41h 23m

Washington, D.C. Dulles Intl

Sat 11/8

7:43 am-1:05 pm

2 stops40h 22m

$1,027

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Tue 3/10

1:35 am-10:50 am

1 stop21h 15m

Washington, D.C. Dulles Intl

Sun 3/15

7:59 pm-8:25 pm

2 stops36h 26m

$1,099

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Tue 10/7

7:30 am-10:55 am

1 stop39h 25m

Washington, D.C. Dulles Intl

Thu 10/16

6:00 am-11:40 pm

2 stops29h 40m

$1,099

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Mon 11/17

11:55 pm-6:30 pm

1 stop31h 35m

$442

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 11/13

8:50 am-8:54 pm

2 stops25h 04m

$542

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Tue 9/23

9:10 am-11:13 am

2 stops38h 03m

$542

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 11/13

11:55 pm-6:30 pm

1 stop31h 35m

$557

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Fri 2/27

8:50 am-8:59 pm

2 stops25h 09m

$561

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 15 results
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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.

Cheapflights Insights

Everything you need to know about your flight from Singapore to Washington, D.C. Dulles Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Singapore to Dulles Intl. Price data was last updated on September 12, 2025.

To ensure you get the cheapest price possible for a flight from Singapore to Washington, D.C. Dulles Intl Airport, you should look to book at least 38 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $292). Flying from Singapore to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

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 airport do you fly from for flights from Singapore to Washington, D.C. Dulles Intl?

    If you book a flight to Washington, D.C. Dulles Intl from Singapore, you will be flying from Changi, which is the city’s only airport. Singapore Changi (SIN) is located 10.5 mi from the center of Singapore. There are 0 flights from Changi to Washington, D.C. Dulles Intl per day from 0 different airlines.

  • How long is the flight from Singapore to Washington, D.C. Dulles Intl Airport?

    Departing from Singapore to Washington, D.C. Dulles Intl Airport will take you 24h 20m. Airlines will cover a distance of 9644 mi. This flight may include one or multiple stops.

  • 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 $292). Flying from Singapore to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
National Harbor
Dundalk

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Alternative routes for Singapore to Dulles Intl

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