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Cheap flights from Singapore to Washington, D.C. from $454

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 9/18. 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
8:50 am - 8:59 pmSIN-IAD
25h 09m2 stops
Air Canada Logo
9:55 am - 7:00 amIAD-SIN
32h 05m2 stops
$747Air Canada
Find Deal
Tue, Nov 18 - Tue, Jan 20
Air Canada Logo
8:50 am - 9:20 pmSIN-IAD
25h 30m2 stops
Air Canada Logo
9:00 am - 4:55 amIAD-SIN
30h 55m2 stops
$767Air Canada
Find Deal
Tue, Nov 18 - Wed, Jan 21
Air Canada Logo
8:50 am - 9:20 pmSIN-IAD
25h 30m2 stops
Air Canada Logo
9:00 am - 6:55 amIAD-SIN
32h 55m2 stops
$770Air Canada
Find Deal
Thu, Nov 20 - Tue, Jan 20
Air Canada Logo
10:10 pm - 9:25 pmSIN-IAD
35h 15m2 stops
Air Canada Logo
5:37 pm - 12:45 amIAD-SIN
43h 08m2 stops
$777Air Canada
Find Deal
Sun, Oct 5 - Sun, Oct 19
ANA Logo
6:15 am - 8:55 pmSIN-IAD
26h 40m2 stops
ANA Logo
12:15 pm - 6:40 amIAD-SIN
30h 25m1 stop
$927ANA
Find Deal
Thu, Sep 4 - Thu, Sep 18
Air China Logo
5:35 pm - 7:30 pmSIN-IAD
61h 55m2 stops
Air China Logo
11:00 pm - 9:55 pmIAD-SIN
34h 55m1 stop
$953Air China
Find Deal
Sun, Sep 7 - Fri, Sep 12
Logo
8:50 am - 8:59 pmSIN-IAD
25h 09m2 stops
Logo
1:30 pm - 8:45 amIAD-SIN
30h 15m1 stop
$980
Find Deal
Tue, Nov 18 - Tue, Jan 20
Air India Logo
8:20 am - 6:50 amSIN-IAD
35h 30m1 stop
Air India Logo
11:00 am - 7:00 amIAD-SIN
31h 00m1 stop
$1,019Air India
Find Deal
Mon, Nov 17 - Tue, Jan 20
Logo
7:45 pm - 7:45 pmSIN-IAD
36h 00m2 stops
Logo
10:05 pm - 9:40 amIAD-SIN
23h 35m1 stop
$1,022
Find Deal
Sat, Sep 13 - Sat, Sep 20
Air China Logo
11:55 pm - 6:30 pmSIN-IAD
31h 35m1 stop
Air China Logo
10:00 pm - 6:50 amIAD-SIN
43h 50m1 stop
$1,063Air China
Find Deal
Thu, Nov 13 - Fri, Jan 16

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
Sep 7
SIN5:35 pmSingapore Changi
61h 55m
2 stops
IAD7:30 pmWashington, D.C. Dulles Intl
Sep 12
IAD11:00 pmWashington, D.C. Dulles Intl
34h 55m
1 stop
SIN9:55 pmSingapore Changi
$953
Find similar
Air China
Nov 13
SIN11:55 pmSingapore Changi
31h 35m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
Jan 16
IAD10:00 pmWashington, D.C. Dulles Intl
43h 50m
1 stop
SIN6:50 amSingapore Changi
$1,063
Find similar
Air China
Aug 3
SIN5:30 pmSingapore Changi
62h 00m
2 stops
IAD7:30 pmWashington, D.C. Dulles Intl
Sep 12
IAD11:00 pmWashington, D.C. Dulles Intl
43h 50m
1 stop
SIN6:50 amSingapore Changi
$1,178
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
Nov 18
SIN8:50 amSingapore Changi
25h 09m
2 stops
IAD8:59 pmWashington, D.C. Dulles Intl
Jan 20
IAD9:55 amWashington, D.C. Dulles Intl
32h 05m
2 stops
SIN7:00 amSingapore Changi
$747
Find similar
Air Canada
Nov 18
SIN8:50 amSingapore Changi
25h 30m
2 stops
IAD9:20 pmWashington, D.C. Dulles Intl
Jan 21
IAD9:00 amWashington, D.C. Dulles Intl
30h 55m
2 stops
SIN4:55 amSingapore Changi
$767
Find similar
Air Canada
Nov 20
SIN8:50 amSingapore Changi
25h 30m
2 stops
IAD9:20 pmWashington, D.C. Dulles Intl
Jan 20
IAD9:00 amWashington, D.C. Dulles Intl
32h 55m
2 stops
SIN6:55 amSingapore Changi
$770
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 July 31, 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

Tue 11/18

8:50 am-8:59 pm

2 stops25h 09m

Washington, D.C. Dulles Intl

Tue 1/20

9:55 am-7:00 am

2 stops32h 05m

$747

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Tue 11/18

8:50 am-9:20 pm

2 stops25h 30m

Washington, D.C. Dulles Intl

Wed 1/21

9:00 am-4:55 am

2 stops30h 55m

$767

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 11/20

8:50 am-9:20 pm

2 stops25h 30m

Washington, D.C. Dulles Intl

Tue 1/20

9:00 am-6:55 am

2 stops32h 55m

$770

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 10/5

10:10 pm-9:25 pm

2 stops35h 15m

Washington, D.C. Dulles Intl

Sun 10/19

5:37 pm-12:45 am

2 stops43h 08m

$777

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 9/4

6:15 am-8:55 pm

2 stops26h 40m

Washington, D.C. Dulles Intl

Thu 9/18

12:15 pm-6:40 am

1 stop30h 25m

$927

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 9/7

5:35 pm-7:30 pm

2 stops61h 55m

Washington, D.C. Dulles Intl

Fri 9/12

11:00 pm-9:55 pm

1 stop34h 55m

$953

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Tue 11/18

8:50 am-8:59 pm

2 stops25h 09m

Washington, D.C. Dulles Intl

Tue 1/20

1:30 pm-8:45 am

1 stop30h 15m

$980

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Mon 11/17

8:20 am-6:50 am

1 stop35h 30m

Washington, D.C. Dulles Intl

Tue 1/20

11:00 am-7:00 am

1 stop31h 00m

$1,019

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sat 9/13

7:45 pm-7:45 pm

2 stops36h 00m

Washington, D.C. Dulles Intl

Sat 9/20

10:05 pm-9:40 am

1 stop23h 35m

$1,022

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 11/13

11:55 pm-6:30 pm

1 stop31h 35m

Washington, D.C. Dulles Intl

Fri 1/16

10:00 pm-6:50 am

1 stop43h 50m

$1,063

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 $1,159.

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 $1,326 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 6% 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 July 2025, prices for Singapore to Washington, D.C. Dulles Intl Airport flights are approximately 51% 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

Best Price Found

$454

Fastest flight time

22h 30m

Direct flights

None
The best one-way flight to Washington, D.C. Dulles Intl Airport from Singapore in the past 72 hours is $454. The best round-trip flight deal from Singapore to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $747.
The fastest flight from Singapore to Washington, D.C. Dulles Intl Airport takes 22h 30m
There are no direct flights from Singapore to Washington, D.C. Dulles Intl Airport. Popular non-direct route for this connection is Singapore Changi Airport - 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 23h 10m.

  • 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
Arlington
National Harbor
Winchester
Woodbridge
Laurel
Tysons
Silver Spring
Waldorf
Fredericksburg
Manassas
Harpers Ferry
Towson
Rockville
Colonial Beach
Gaithersburg
Fairfax
Reston
Glen Burnie

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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