Cheap flights from Washington, D.C. to Singapore from $475

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Singapore departing on 9/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Washington, D.C. to Singapore

Cheap round-trip flights

Enter your travel dates to find the best prices.
Qatar Airways Logo
9:00 pm - 4:15 pm
IAD
-
SIN
31h 15m
1 stop
Qatar Airways Logo
1:05 am - 6:10 pm
SIN
-
IAD
53h 05m
1 stop
$1,091Qatar Airways
Sun, Apr 19 - Sun, May 3
Etihad Airways Logo
3:10 pm - 9:40 am
IAD
-
SIN
30h 30m
1 stop
Etihad Airways Logo
9:00 pm - 9:45 am
SIN
-
IAD
24h 45m
1 stop
$1,100Etihad Airways
Mon, May 18 - Thu, Jul 2
Etihad Airways Logo
3:10 pm - 9:40 am
IAD
-
SIN
30h 30m
1 stop
Etihad Airways Logo
9:00 pm - 9:45 am
SIN
-
IAD
24h 45m
1 stop
$1,101Etihad Airways
Thu, May 28 - Sat, Jun 27
Qatar Airways Logo
9:00 pm - 4:15 pm
IAD
-
SIN
31h 15m
1 stop
Qatar Airways Logo
1:05 am - 6:10 pm
SIN
-
IAD
29h 05m
1 stop
$1,104Qatar Airways
Fri, Apr 17 - Wed, Apr 22
Etihad Airways Logo
3:10 pm - 9:40 am
IAD
-
SIN
30h 30m
1 stop
Etihad Airways Logo
9:00 pm - 9:45 am
SIN
-
IAD
24h 45m
1 stop
$1,105Etihad Airways
Sat, Sep 19 - Sat, Sep 26
EVA Air Logo
1:15 am - 11:55 am
IAD
-
SIN
22h 40m
1 stop
EVA Air Logo
1:10 pm - 10:00 pm
SIN
-
IAD
20h 50m
1 stop
$1,116EVA Air
Fri, Sep 18 - Sat, Sep 26
Air Canada Logo
6:00 am - 5:15 am
DCA
-
SIN
35h 15m
2 stops
Air Canada Logo
11:55 pm - 3:40 pm
SIN
-
DCA
51h 45m
2 stops
$1,135Air Canada
Thu, Aug 27 - Mon, Sep 28
Air Canada Logo
12:55 pm - 5:15 am
DCA
-
SIN
28h 20m
2 stops
Air Canada Logo
7:00 am - 12:01 pm
SIN
-
DCA
41h 01m
2 stops
$1,140Air Canada
Tue, Apr 28 - Tue, May 19
Singapore Airlines Logo
6:59 pm - 7:10 pm
DCA
-
SIN
36h 11m
1 stop
Singapore Airlines Logo
8:45 pm - 8:00 pm
SIN
-
DCA
35h 15m
1 stop
$1,182Singapore Airlines
Tue, Sep 15 - Fri, Sep 25
Singapore Airlines Logo
9:30 am - 5:15 am
DCA
-
SIN
31h 45m
1 stop
Singapore Airlines Logo
6:40 pm - 8:00 pm
SIN
-
DCA
37h 20m
1 stop
$1,192Singapore Airlines
Sun, Sep 6 - Wed, Sep 9

Air Canada flights from Washington, D.C. to Singapore

Our best Air Canada deals on Washington, D.C. to Singapore flight tickets
Air Canada
May 9
IAD10:07 pmWashington, D.C. Dulles Intl
43h 08m
2 stops
SIN5:15 amSingapore Changi
May 26
SIN7:00 amSingapore Changi
40h 43m
2 stops
IAD11:43 amWashington, D.C. Dulles Intl
$1,137
Air Canada
Apr 28
DCA12:55 pmWashington, D.C. Reagan-National
28h 20m
2 stops
SIN5:15 amSingapore Changi
May 19
SIN7:00 amSingapore Changi
41h 01m
2 stops
DCA12:01 pmWashington, D.C. Reagan-National
$1,140
Air Canada
Sep 8
DCA12:40 pmWashington, D.C. Reagan-National
28h 35m
2 stops
SIN5:15 amSingapore Changi
Sep 15
SIN7:00 amSingapore Changi
26h 50m
2 stops
DCA9:50 pmWashington, D.C. Reagan-National
$1,144

Singapore Airlines flights from Washington, D.C. to Singapore

Our best Singapore Airlines deals on Washington, D.C. to Singapore flight tickets
Singapore Airlines
Sep 15
DCA6:59 pmWashington, D.C. Reagan-National
36h 11m
1 stop
SIN7:10 pmSingapore Changi
Sep 25
SIN8:45 pmSingapore Changi
35h 15m
1 stop
DCA8:00 pmWashington, D.C. Reagan-National
$1,182
Singapore Airlines
Sep 6
DCA9:30 amWashington, D.C. Reagan-National
31h 45m
1 stop
SIN5:15 amSingapore Changi
Sep 9
SIN6:40 pmSingapore Changi
37h 20m
1 stop
DCA8:00 pmWashington, D.C. Reagan-National
$1,192
Singapore Airlines
Sep 9
DCA9:30 amWashington, D.C. Reagan-National
31h 45m
1 stop
SIN5:15 amSingapore Changi
Sep 19
SIN9:00 amSingapore Changi
24h 59m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$1,200

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Singapore 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 April 7, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 4/19

9:00 pm-4:15 pm

1 stop31h 15m

Singapore Changi

Sun 5/3

1:05 am-6:10 pm

1 stop53h 05m

$1,091

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 5/18

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Thu 7/2

9:00 pm-9:45 am

1 stop24h 45m

$1,100

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 5/28

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Sat 6/27

9:00 pm-9:45 am

1 stop24h 45m

$1,101

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 4/17

9:00 pm-4:15 pm

1 stop31h 15m

Singapore Changi

Wed 4/22

1:05 am-6:10 pm

1 stop29h 05m

$1,104

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 9/19

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Sat 9/26

9:00 pm-9:45 am

1 stop24h 45m

$1,105
Quickest round-trip

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 9/18

1:15 am-11:55 am

1 stop22h 40m

Singapore Changi

Sat 9/26

1:10 pm-10:00 pm

1 stop20h 50m

$1,116

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 8/27

6:00 am-5:15 am

2 stops35h 15m

Singapore Changi

Mon 9/28

11:55 pm-3:40 pm

2 stops51h 45m

$1,135

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 4/28

12:55 pm-5:15 am

2 stops28h 20m

Singapore Changi

Tue 5/19

7:00 am-12:01 pm

2 stops41h 01m

$1,140

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 9/15

6:59 pm-7:10 pm

1 stop36h 11m

Singapore Changi

Fri 9/25

8:45 pm-8:00 pm

1 stop35h 15m

$1,182

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sun 9/6

9:30 am-5:15 am

1 stop31h 45m

Singapore Changi

Wed 9/9

6:40 pm-8:00 pm

1 stop37h 20m

$1,192

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Singapore from

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

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 Singapore?

The month of August is, on average, the cheapest month to fly to Singapore from Washington, D.C., with most prices found around $738. If you aren’t able to travel to Singapore during the month of August, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $952.

How far in advance should I book a flight to Singapore?

You are more likely to see cheaper flights to Singapore from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $1,280 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from Washington, D.C. for as low as $886 on momondo.

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

You could potentially save up to 10% on your flight if you consider stops on a Washington, D.C. to Singapore flight.

Cheap Washington, D.C. to Singapore flight deals and tips

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

Fastest flight time

22h 05m

Direct flights

None
The fastest flight from Washington, D.C. to Singapore takes 22h 05m
There are no direct flights from Washington, D.C. to Singapore. There are no popular flight routes from Washington, D.C. to Singapore.

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

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

    Prices for flights from Washington, D.C. to Singapore were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Singapore.

  • What documentation or ID do you need to fly to Singapore?

    The necessary travel and health documents for your Singapore trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Washington, D.C. to Singapore

Compare and see reviews for airlines that fly from Washington, D.C. to Singapore with momondo
Airline
Rating
Free Cancellation
Price
Korean AirPriceFrom $743Free CancellationRating
8.4
1,203 reviews
Search Korean Air flights
Air IndiaPriceFrom $807Free CancellationRating
5.5
2,966 reviews
Search Air India flights
Etihad AirwaysPriceFrom $828Free CancellationRating
7.3
1,428 reviews
Search Etihad Airways flights
Turkish AirlinesPriceFrom $917Free CancellationRating
7.3
4,300 reviews
Search Turkish Airlines flights
Qatar AirwaysPriceFrom $1,063Free CancellationRating
7.4
3,729 reviews
Search Qatar Airways flights
United AirlinesPriceFrom $1,125Free CancellationRating
7.4
9,546 reviews
Search United Airlines flights
JetBluePriceFrom $1,245Free CancellationRating
7.2
2,917 reviews
Search JetBlue flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Singapore for you.

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

Yes. All flights to Singapore from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Singapore from Washington, D.C..

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

Price alerts on flights to Singapore from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Singapore trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 5/7
Thu 5/14

Find better results for your trip to Singapore

Popular cities in Singapore

Popular flights according to clicks in the last 7 days on momondo