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Cheap flights from Singapore to Washington, D.C. from $442

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 11/17. 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

Air Canada Logo
9:10 am - 9:38 amSIN-IAD
36h 28m2 stops
Air Canada Logo
9:35 am - 7:05 amIAD-SIN
33h 30m2 stops
$870Air Canada
Find Deal
Sun, Sep 28 - Sun, Oct 19
Air Canada Logo
9:10 am - 9:38 amSIN-IAD
36h 28m2 stops
Air Canada Logo
9:35 am - 7:05 amIAD-SIN
33h 30m2 stops
$871Air Canada
Find Deal
Sun, Oct 5 - Sun, Oct 19
Air Canada Logo
9:10 am - 9:38 amSIN-IAD
36h 28m2 stops
Air Canada Logo
9:35 am - 7:05 amIAD-SIN
33h 30m2 stops
$872Air Canada
Find Deal
Sun, Oct 5 - Sun, Oct 19
ANA Logo
10:10 pm - 10:05 amSIN-IAD
23h 55m1 stop
ANA Logo
1:20 pm - 6:55 amIAD-SIN
53h 35m2 stops
$922ANA
Find Deal
Thu, Oct 9 - Sat, Oct 25
IndiGo Logo
7:45 pm - 7:45 pmSIN-IAD
36h 00m2 stops
IndiGo Logo
9:10 pm - 5:20 pmIAD-SIN
31h 10m2 stops
$975IndiGo
Find Deal
Thu, Oct 16 - Fri, Nov 7
IndiGo Logo
7:40 pm - 7:15 pmSIN-IAD
36h 35m2 stops
IndiGo Logo
9:10 pm - 5:20 pmIAD-SIN
31h 10m2 stops
$989IndiGo
Find Deal
Mon, Nov 17 - Sun, Nov 23
Korean Air Logo
1:35 am - 10:50 amSIN-IAD
21h 15m1 stop
Korean Air Logo
12:50 pm - 12:10 amIAD-SIN
23h 20m1 stop
$993Korean Air
Find Deal
Tue, Mar 10 - Sun, Mar 15
Delta Logo
10:40 am - 12:40 amSIN-IAD
26h 00m2 stops
Delta Logo
7:35 am - 12:10 amIAD-SIN
27h 35m2 stops
$994Delta
Find Deal
Thu, Oct 30 - Thu, Nov 6
Korean Air Logo
1:35 am - 10:50 amSIN-IAD
21h 15m1 stop
Korean Air Logo
12:50 pm - 12:10 amIAD-SIN
23h 20m1 stop
$996Korean Air
Find Deal
Tue, Mar 10 - Sun, Mar 15
Delta Logo
1:35 am - 12:54 amSIN-IAD
36h 19m2 stops
Delta Logo
6:00 am - 5:00 amIAD-SIN
34h 00m2 stops
$998Delta
Find Deal
Sun, Nov 16 - Sun, Nov 23

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

Our best Delta deals on Singapore to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Oct 30
SIN10:40 amSingapore Changi
26h 00m
2 stops
IAD12:40 amWashington, D.C. Dulles Intl
Nov 6
IAD7:35 amWashington, D.C. Dulles Intl
27h 35m
2 stops
SIN12:10 amSingapore Changi
$994
Find similar
Delta
Nov 16
SIN1:35 amSingapore Changi
36h 19m
2 stops
IAD12:54 amWashington, D.C. Dulles Intl
Nov 23
IAD6:00 amWashington, D.C. Dulles Intl
34h 00m
2 stops
SIN5:00 amSingapore Changi
$998
Find similar
Delta
Oct 6
SIN1:10 amSingapore Changi
21h 45m
1 stop
IAD10:55 amWashington, D.C. Dulles Intl
Oct 16
IAD6:00 amWashington, D.C. Dulles Intl
29h 40m
2 stops
SIN11:40 pmSingapore Changi
$1,099
Find similar

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

Our best Air Canada deals on Singapore to Washington, D.C. Dulles Intl Airport flight tickets
Air Canada
Sep 28
SIN9:10 amSingapore Changi
36h 28m
2 stops
IAD9:38 amWashington, D.C. Dulles Intl
Oct 19
IAD9:35 amWashington, D.C. Dulles Intl
33h 30m
2 stops
SIN7:05 amSingapore Changi
$870
Find similar
Air Canada
Oct 5
SIN9:10 amSingapore Changi
36h 28m
2 stops
IAD9:38 amWashington, D.C. Dulles Intl
Oct 19
IAD9:35 amWashington, D.C. Dulles Intl
33h 30m
2 stops
SIN7:05 amSingapore Changi
$871
Find similar
Air Canada
Oct 5
SIN9:10 amSingapore Changi
36h 28m
2 stops
IAD9:38 amWashington, D.C. Dulles Intl
Oct 19
IAD9:35 amWashington, D.C. Dulles Intl
33h 30m
2 stops
SIN7:05 amSingapore Changi
$872
Find similar

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 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

Fly to

Route

Depart

Return

Price

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 9/28

9:10 am-9:38 am

2 stops36h 28m

Washington, D.C. Dulles Intl

Sun 10/19

9:35 am-7:05 am

2 stops33h 30m

$870

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 10/5

9:10 am-9:38 am

2 stops36h 28m

Washington, D.C. Dulles Intl

Sun 10/19

9:35 am-7:05 am

2 stops33h 30m

$871

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 10/5

9:10 am-9:38 am

2 stops36h 28m

Washington, D.C. Dulles Intl

Sun 10/19

9:35 am-7:05 am

2 stops33h 30m

$872

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 10/9

10:10 pm-10:05 am

1 stop23h 55m

Washington, D.C. Dulles Intl

Sat 10/25

1:20 pm-6:55 am

2 stops53h 35m

$922

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 10/16

7:45 pm-7:45 pm

2 stops36h 00m

Washington, D.C. Dulles Intl

Fri 11/7

9:10 pm-5:20 pm

2 stops31h 10m

$975

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Mon 11/17

7:40 pm-7:15 pm

2 stops36h 35m

Washington, D.C. Dulles Intl

Sun 11/23

9:10 pm-5:20 pm

2 stops31h 10m

$989

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

12:50 pm-12:10 am

1 stop23h 20m

$993

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 10/30

10:40 am-12:40 am

2 stops26h 00m

Washington, D.C. Dulles Intl

Thu 11/6

7:35 am-12:10 am

2 stops27h 35m

$994

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

12:50 pm-12:10 am

1 stop23h 20m

$996

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

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

In general, March 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 $1,099. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,123.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Saturday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $704. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Singapore to Washington, D.C. Dulles Intl Airport for around $1,492.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Singapore in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,114 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,372 on average. Flights to Washington, D.C. Dulles Intl Airport from Singapore in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Singapore when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $1,342 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Singapore for as low as $939 on momondo.

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

You could potentially save up to 32% 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 September 2025, prices for Singapore to Washington, D.C. Dulles Intl Airport flights are approximately 7% 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

Direct flights

None
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.
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  • 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 21h 15m.

  • 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 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.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
National Harbor
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Reston
Fairfax
Glen Burnie
Gaithersburg

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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