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

Travelers seeking maximum savings on their Singapore to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

What is the cheapest day to fly round-trip from Singapore to Washington, D.C. Dulles Intl Airport?

Flying to your destination on a Sunday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Washington, D.C. Dulles Intl Airport. Check prices with Cheapflights to find a great deal for your trip.

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

Our data shows that August tends to be the cheapest month to fly to Washington, D.C. Dulles Intl Airport from Singapore. Users have commonly found prices around $1,239 for the month, but tickets can be as low as $923. Due to multiple factors, prepare for potentially higher prices in July.

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

It’s typically best to fly out from Singapore to Washington, D.C. Dulles Intl Airport in the morning. Doing so could potentially save you 19% on the flight price compared to flying at noon, which is usually more expensive.

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.

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.

$468+ Flights from Singapore to Washington, D.C. Dulles Intl Airport

Q: How much does it cost to fly round-trip from Singapore to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment. Singapore to Washington, D.C. Dulles Intl Airport flights typically cost between $1,180 and $1,584 in September. The cheapest round-trip price found within the last 3 days was $794 on Air China (Sep 19-Sep 23).

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Singapore Changi to Washington, D.C. Dulles Intl are usually found in September or March, booked 78 days in advance, depart on a Friday or Tuesday and return on a Friday

Cheap flight deals from Singapore to Dulles Intl

Round-trip from	$794 (Gotogate)
One-way from	$468 (Booking.com)
Popular in	July
Cheapest in	September
Average price	$1,407

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. 9% potential increase in price ($134 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($23 potential savings vs. average RT price).

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Average for round-trip flights in August 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 August 14, 2025.

Fri 9/199:00 amSIN - IAD

1 stop22h 30mAir China

Tue 9/2311:00 pmIAD - SIN

1 stop34h 55mAir China

Deal found 8/14

$794

Fri 9/199:00 amSIN - IAD

1 stop22h 30mMultiple Airlines

Tue 9/239:40 pmIAD - SIN

2 stops32h 05mMultiple Airlines

Deal found 8/13

$877

Sun 10/59:10 amSIN - IAD

2 stops38h 03mAir Canada

Sun 10/199:35 amIAD - SIN

2 stops33h 30mAir Canada

Deal found 8/14

$892

Fri 9/196:15 amSIN - IAD

2 stops26h 50mAir Canada

Tue 9/232:25 pmIAD - SIN

2 stops28h 40mAir Canada

Deal found 8/13

$929

Wed 9/36:15 amSIN - IAD

2 stops26h 40mANA

Wed 9/1712:15 pmIAD - SIN

1 stop30h 25mANA

Deal found 8/13

$930

Wed 9/107:45 pmSIN - IAD

2 stops36h 00mIndiGo

Wed 9/171:30 pmIAD - SIN

2 stops39h 50mIndiGo

Deal found 8/13

$937

Sun 9/2810:10 pmSIN - IAD

2 stops35h 15mAir Canada

Sun 10/55:15 pmIAD - SIN

2 stops25h 50mAir Canada

Deal found 8/14

$939

Sun 9/287:45 pmSIN - IAD

2 stops36h 00mIndiGo

Sun 10/59:40 pmIAD - SIN

2 stops31h 40mIndiGo

Deal found 8/14

$956

Sun 9/149:10 amSIN - IAD

2 stops36h 28mAir Canada

Thu 9/189:35 amIAD - SIN

2 stops33h 30mAir Canada

Deal found 8/14

$967

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 August 14, 2025.

Fri 9/199:00 amSIN - IAD

1 stop22h 30mAir China

Tue 9/2311:00 pmIAD - SIN

1 stop34h 55mAir China

Deal found 8/14

$794

Fri 9/199:00 amSIN - IAD

1 stop22h 30mMultiple Airlines

Tue 9/239:40 pmIAD - SIN

2 stops32h 05mMultiple Airlines

Deal found 8/13

$877

Sun 10/59:10 amSIN - IAD

2 stops38h 03mAir Canada

Sun 10/199:35 amIAD - SIN

2 stops33h 30mAir Canada

Deal found 8/14

$892

Wed 9/36:15 amSIN - IAD

2 stops26h 40mANA

Wed 9/1712:15 pmIAD - SIN

1 stop30h 25mANA

Deal found 8/14

$935

Wed 9/107:45 pmSIN - IAD

2 stops36h 00mIndiGo

Wed 9/171:30 pmIAD - SIN

2 stops39h 50mIndiGo

Deal found 8/13

$937

Fri 9/196:15 amSIN - IAD

2 stops26h 50mAir Canada

Tue 9/232:25 pmIAD - SIN

2 stops28h 40mAir Canada

Deal found 8/13

$929

Sun 9/287:45 pmSIN - IAD

2 stops36h 00mIndiGo

Sun 10/59:40 pmIAD - SIN

2 stops31h 40mIndiGo

Deal found 8/14

$956

Sun 9/2810:10 pmSIN - IAD

2 stops35h 15mAir Canada

Sun 10/55:15 pmIAD - SIN

2 stops25h 50mAir Canada

Deal found 8/14

$939

Sun 9/149:10 amSIN - IAD

2 stops36h 28mAir Canada

Thu 9/189:35 amIAD - SIN

2 stops33h 30mAir Canada

Deal found 8/14

$967

Last-minute flights from Singapore to Dulles Intl
Discover last-minute flight deals from Singapore to Dulles Intl. Data last updated August 14, 2025 and is based on user searches.

Tue 8/198:45 amSIN - IAD

2 stops26h 14mUnited Airlines

Mon 8/2510:10 pmIAD - SIN

1 stop32h 15mUnited Airlines

Deal found 8/13

$1,138

Tue 8/198:45 amSIN - IAD

1 stop24h 37mUnited Airlines

Tue 8/263:55 pmIAD - SIN

2 stops26h 20mUnited Airlines

Deal found 8/13

$1,256

Wed 8/206:15 amSIN - IAD

2 stops29h 40mUnited Airlines

Tue 8/266:35 amIAD - SIN

2 stops30h 10mUnited Airlines

Deal found 8/13

$1,270

Wed 8/2010:50 pmSIN - IAD

2 stops43h 41mAir Canada

Mon 8/2510:10 pmIAD - SIN

2 stops44h 55mAir Canada

Deal found 8/13

$1,275

Wed 8/2010:50 pmSIN - IAD

2 stops43h 41mAir Canada

Wed 8/278:25 amIAD - SIN

2 stops28h 20mAir Canada

Deal found 8/13

$1,283

Wed 8/2010:50 pmSIN - IAD

2 stops43h 41mAir Canada

Thu 8/288:25 amIAD - SIN

1 stop34h 40mAir Canada

Deal found 8/13

$1,290

Thu 8/218:45 amSIN - IAD

2 stops26h 14mUnited Airlines

Sun 8/244:00 pmIAD - SIN

1 stop38h 25mUnited Airlines

Deal found 8/14

$1,142

Sat 8/233:10 pmSIN - IAD

2 stops28h 22mMultiple Airlines

Wed 9/36:09 pmIAD - SIN

2 stops29h 51mMultiple Airlines

Deal found 8/13

$1,282

Sun 8/248:40 pmSIN - IAD

2 stops32h 50mUnited Airlines

Sun 9/712:15 pmIAD - SIN

1 stop30h 25mUnited Airlines

Deal found 8/14

$1,160

Wed 9/36:15 amSIN - IAD

2 stops26h 40mANA

Wed 9/1712:15 pmIAD - SIN

1 stop30h 25mANA

Deal found 8/13

$930

Wed 9/107:45 pmSIN - IAD

2 stops36h 00mIndiGo

Wed 9/171:30 pmIAD - SIN

2 stops39h 50mIndiGo

Deal found 8/13

$937

Sun 9/149:10 amSIN - IAD

2 stops36h 28mAir Canada

Thu 9/189:35 amIAD - SIN

2 stops33h 30mAir Canada

Deal found 8/14

$967

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 August 14, 2025.

Mon 9/811:25 pmSIN - IAD

1 stop32h 05mAir China

Deal found 8/13

$468

Thu 11/207:40 pmSIN - IAD

2 stops36h 35mIndiGo

Deal found 8/12

$508

Sun 9/287:45 pmSIN - IAD

2 stops36h 00mIndiGo

Deal found 8/14

$527

Mon 9/88:30 pmSIN - IAD

2 stops51h 15mMultiple Airlines

Deal found 8/13

$559

Sat 10/119:10 amSIN - IAD

2 stops36h 28mAir Canada

Deal found 8/13

$568

Thu 9/1112:20 amSIN - IAD

3 stops35h 55mMultiple Airlines

Deal found 8/14

$569

Sat 9/2712:20 amSIN - IAD

3 stops44h 57mMultiple Airlines

Deal found 8/14

$573

Sat 9/138:00 pmSIN - IAD

3 stops52h 55mMultiple Airlines

Deal found 8/14

$575

Fri 9/127:45 pmSIN - IAD

2 stops36h 00mIndiGo

Deal found 8/14

$577

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Fri 9/19

9:00 am-7:30 pm

1 stop22h 30m

Washington, D.C. Dulles Intl

Tue 9/23

11:00 pm-9:55 pm

1 stop34h 55m

$794

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Fri 9/19

9:00 am-7:30 pm

1 stop22h 30m

Washington, D.C. Dulles Intl

Tue 9/23

9:40 pm-5:45 pm

2 stops32h 05m

$877

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 10/5

9:10 am-11:13 am

2 stops38h 03m

Washington, D.C. Dulles Intl

Sun 10/19

9:35 am-7:05 am

2 stops33h 30m

$892

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Fri 9/19

6:15 am-9:05 pm

2 stops26h 50m

Washington, D.C. Dulles Intl

Tue 9/23

2:25 pm-7:05 am

2 stops28h 40m

$929

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Wed 9/3

6:15 am-8:55 pm

2 stops26h 40m

Washington, D.C. Dulles Intl

Wed 9/17

12:15 pm-6:40 am

1 stop30h 25m

$935

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Wed 9/10

7:45 pm-7:45 pm

2 stops36h 00m

Washington, D.C. Dulles Intl

Wed 9/17

1:30 pm-5:20 pm

2 stops39h 50m

$937

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 9/28

10:10 pm-9:25 pm

2 stops35h 15m

Washington, D.C. Dulles Intl

Sun 10/5

5:15 pm-7:05 am

2 stops25h 50m

$939

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 9/28

7:45 pm-7:45 pm

2 stops36h 00m

Washington, D.C. Dulles Intl

Sun 10/5

9:40 pm-5:20 pm

2 stops31h 40m

$956

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 9/14

9:10 am-9:38 am

2 stops36h 28m

Washington, D.C. Dulles Intl

Thu 9/18

9:35 am-7:05 am

2 stops33h 30m

$967

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Mon 9/8

11:25 pm-7:30 pm

1 stop32h 05m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 19 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.

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?

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 78 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, July is the cheapest month in which you can book a flight from Singapore to Washington, D.C. Dulles Intl Airport (average of $302). 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.

How much does it cost to fly round-trip from Singapore to Washington, D.C. Dulles Intl Airport?

Related info for your journey

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.
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, July is the cheapest month in which you can book a flight from Singapore to Washington, D.C. Dulles Intl Airport (average of $302). 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.

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$468+ 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 9/8. 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

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Cheapflights Tip: The best prices from Singapore Changi to Washington, D.C. Dulles Intl are usually found in September or March, booked 78 days in advance, depart on a Friday or Tuesday and return on a Friday

Cheap flight deals from Singapore to Dulles Intl

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 August 14, 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 August 14, 2025.

Cheapflights Fare Finder

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

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.

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 August 8, 2025.

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

How much does it cost to fly round-trip from Singapore to Washington, D.C. Dulles Intl Airport?

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?

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 Washington, D.C. Dulles Intl Airport?

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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 August 14, 2025.