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Cheap flights from Singapore to Washington, D.C. from $448

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Singapore to Washington, D.C. departing on 6/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

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Air China Logo
5:55 pm - 7:30 pm
SIN
-
IAD
37h 35m
1 stop
Air China Logo
11:00 pm - 9:55 pm
IAD
-
SIN
34h 55m
1 stop
$1,010Air China
Mon, Jun 8 - Tue, Jun 23
Air China Logo
11:55 pm - 6:30 pm
SIN
-
IAD
31h 35m
1 stop
Air China Logo
10:00 pm - 6:50 am
IAD
-
SIN
43h 50m
1 stop
$1,046Air China
Mon, Nov 2 - Tue, Dec 8
Air China Logo
11:55 pm - 7:30 pm
SIN
-
IAD
31h 35m
1 stop
Air China Logo
10:00 pm - 6:50 am
IAD
-
SIN
43h 50m
1 stop
$1,069Air China
Thu, Oct 29 - Tue, Dec 8
Multiple Airlines Logo
2:00 am - 5:40 am
SIN
-
IAD
39h 40m
2 stops
Multiple Airlines Logo
7:00 am - 12:35 pm
IAD
-
SIN
41h 35m
2 stops
$1,150Multiple Airlines
Sun, Sep 27 - Sat, Oct 10
Air China Logo
11:55 pm - 7:30 pm
SIN
-
IAD
31h 35m
1 stop
Air China Logo
10:00 pm - 6:50 am
IAD
-
SIN
43h 50m
1 stop
$1,174Air China
Thu, Oct 29 - Fri, Dec 11
Air China Logo
5:55 pm - 7:30 pm
SIN
-
IAD
37h 35m
1 stop
Air China Logo
11:00 pm - 4:25 pm
IAD
-
SIN
29h 25m
1 stop
$1,177Air China
Mon, Jun 22 - Fri, Jun 26
Multiple Airlines Logo
3:15 am - 11:59 pm
SIN
-
IAD
32h 44m
2 stops
Multiple Airlines Logo
9:00 pm - 8:50 am
IAD
-
SIN
23h 50m
1 stop
$1,194Multiple Airlines
Tue, Sep 29 - Sat, Oct 10
Multiple Airlines Logo
6:50 pm - 3:40 pm
SIN
-
IAD
32h 50m
2 stops
Multiple Airlines Logo
6:50 pm - 7:50 pm
IAD
-
SIN
37h 00m
2 stops
$1,218Multiple Airlines
Wed, Sep 30 - Sat, Oct 10
Multiple Airlines Logo
3:45 pm - 5:51 am
SIN
-
IAD
27h 06m
2 stops
Multiple Airlines Logo
5:38 pm - 12:05 pm
IAD
-
SIN
29h 27m
2 stops
$1,228Multiple Airlines
Sun, Nov 1 - Tue, Dec 8
Multiple Airlines Logo
11:25 pm - 7:30 pm
SIN
-
IAD
32h 05m
1 stop
Multiple Airlines Logo
3:10 pm - 9:40 am
IAD
-
SIN
30h 30m
1 stop
$1,230Multiple Airlines
Mon, Sep 28 - Sat, Oct 10

Air China flights from Singapore to Washington, D.C. Dulles Intl Airport

Our best Air China deals on Singapore to Washington, D.C. Dulles Intl Airport flight tickets
Air China
Jun 8
SIN5:55 pmSingapore Changi
37h 35m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
Jun 23
IAD11:00 pmWashington, D.C. Dulles Intl
34h 55m
1 stop
SIN9:55 pmSingapore Changi
$1,010
Air China
Nov 2
SIN11:55 pmSingapore Changi
31h 35m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
Dec 8
IAD10:00 pmWashington, D.C. Dulles Intl
43h 50m
1 stop
SIN6:50 amSingapore Changi
$1,046
Air China
Oct 29
SIN11:55 pmSingapore Changi
31h 35m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
Dec 8
IAD10:00 pmWashington, D.C. Dulles Intl
43h 50m
1 stop
SIN6:50 amSingapore Changi
$1,069

STARLUX Airlines flights from Singapore to Washington, D.C. Dulles Intl Airport

Our best STARLUX Airlines deals on Singapore to Washington, D.C. Dulles Intl Airport flight tickets
STARLUX Airlines
Jul 8
SIN2:00 pmSingapore Changi
28h 39m
2 stops
IAD6:39 amWashington, D.C. Dulles Intl
Oct 14
IAD5:33 pmWashington, D.C. Dulles Intl
31h 07m
2 stops
SIN12:40 pmSingapore Changi
$1,291
STARLUX Airlines
Jul 8
SIN2:00 pmSingapore Changi
28h 39m
2 stops
IAD6:39 amWashington, D.C. Dulles Intl
Oct 14
IAD5:33 pmWashington, D.C. Dulles Intl
31h 07m
2 stops
SIN12:40 pmSingapore Changi
$1,299
STARLUX Airlines
Jul 6
SIN2:00 pmSingapore Changi
28h 39m
2 stops
IAD6:39 amWashington, D.C. Dulles Intl
Oct 13
IAD5:33 pmWashington, D.C. Dulles Intl
31h 07m
2 stops
SIN12:40 pmSingapore Changi
$1,348

momondo Fare Finder

 
Customize your flight search to find flights from Singapore to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated May 17, 2026.
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

Cheapest round-trip

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Mon 6/8

5:55 pm-7:30 pm

1 stop37h 35m

Washington, D.C. Dulles Intl

Tue 6/23

11:00 pm-9:55 pm

1 stop34h 55m

$1,010

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Mon 11/2

11:55 pm-6:30 pm

1 stop31h 35m

Washington, D.C. Dulles Intl

Tue 12/8

10:00 pm-6:50 am

1 stop43h 50m

$1,046

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 10/29

11:55 pm-7:30 pm

1 stop31h 35m

Washington, D.C. Dulles Intl

Tue 12/8

10:00 pm-6:50 am

1 stop43h 50m

$1,069

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 9/27

2:00 am-5:40 am

2 stops39h 40m

Washington, D.C. Dulles Intl

Sat 10/10

7:00 am-12:35 pm

2 stops41h 35m

$1,150

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 10/29

11:55 pm-7:30 pm

1 stop31h 35m

Washington, D.C. Dulles Intl

Fri 12/11

10:00 pm-6:50 am

1 stop43h 50m

$1,174

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Mon 6/22

5:55 pm-7:30 pm

1 stop37h 35m

Washington, D.C. Dulles Intl

Fri 6/26

11:00 pm-4:25 pm

1 stop29h 25m

$1,177

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Tue 9/29

3:15 am-11:59 pm

2 stops32h 44m

Washington, D.C. Dulles Intl

Sat 10/10

9:00 pm-8:50 am

1 stop23h 50m

$1,194

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Wed 9/30

6:50 pm-3:40 pm

2 stops32h 50m

Washington, D.C. Dulles Intl

Sat 10/10

6:50 pm-7:50 pm

2 stops37h 00m

$1,218
Quickest round-trip

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 11/1

3:45 pm-5:51 am

2 stops27h 06m

Washington, D.C. Dulles Intl

Tue 12/8

5:38 pm-12:05 pm

2 stops29h 27m

$1,228

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Mon 9/28

11:25 pm-7:30 pm

1 stop32h 05m

Washington, D.C. Dulles Intl

Sat 10/10

3:10 pm-9:40 am

1 stop30h 30m

$1,230

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Singapore to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Singapore and Washington, D.C. Dulles Intl Airport?

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

In general, February is the cheapest month to fly from Singapore to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $924. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $941.

Can stopping save me money on Singapore to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 40% on your flight if you consider stops on a Singapore to Washington, D.C. Dulles Intl Airport flight.

How have Singapore to Washington, D.C. Dulles Intl Airport flight prices changed over time?

As of May 2026, prices for Singapore to Washington, D.C. Dulles Intl Airport flights are approximately 35% cheaper when compared to flights at the same time last year.

When to book flights from Singapore to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Singapore to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Singapore to Washington, D.C. Dulles Intl Airport (SIN to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Singapore to Washington, D.C. Dulles Intl Airport

Fastest flight time

28h 14m

Direct flights

None
The fastest flight from Singapore to Washington, D.C. Dulles Intl Airport takes 28h 14m
There are no direct flights from Singapore to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Singapore to Washington, D.C. Dulles Intl Airport.
Search flight deals

Frequently asked questions about flying from Singapore to Washington, D.C. Dulles Intl Airport

  • How far is Singapore Changi to Washington, D.C. Dulles Intl by plane?

    The distance between Singapore Changi and Washington, D.C. Dulles Intl is about 9647.6 mi. By plane, this route typically takes 28h 14m.

  • When did momondo last update prices for flights from Singapore Changi Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Singapore Changi Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Singapore Changi Airport to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Singapore Changi Airport to Washington, D.C. Dulles Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Singapore Changi Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Singapore to Washington, D.C. Dulles Intl Airport?

Best airlines flying from Singapore to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Singapore to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Air ChinaPriceFrom $1,079Free CancellationRating
7.3
150 reviews
Search Air China flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Laurel
Gaithersburg
Colonial Beach
Fredericksburg
Silver Spring
Towson
Rockville
Manassas
Sterling
Linthicum Heights
Tysons
Bethesda
Springfield

Why use momondo?

Why should I use momondo to find a flight deal from Singapore to Washington, D.C.?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Singapore to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Singapore to Washington, D.C. with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington, D.C. from Singapore which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Singapore to Washington, D.C.?

Once all potential Singapore to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Singapore to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Singapore to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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