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Cheap flights from Washington, D.C. to Singapore from $380

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 2/15. 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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Find the cheapest flights from Washington, D.C. to Singapore

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
7:04 pm - 5:35 pm
BWI
-
SIN
34h 31m1 stop
Singapore Airlines Logo
8:45 pm - 5:08 pm
SIN
-
BWI
32h 23m1 stop
$1,060Singapore Airlines
Sat, Apr 4 - Fri, Apr 10
Air Canada Logo
9:45 am - 5:15 am
IAD
-
SIN
31h 30m2 stops
Air Canada Logo
7:00 am - 8:32 pm
SIN
-
IAD
25h 32m2 stops
$1,104Air Canada
Tue, Jun 9 - Tue, Jun 23
Air Canada Logo
9:55 am - 5:15 am
IAD
-
SIN
31h 20m2 stops
Air Canada Logo
7:00 am - 8:29 pm
SIN
-
IAD
25h 29m2 stops
$1,106Air Canada
Thu, Apr 23 - Sun, Apr 26
Multiple Airlines Logo
3:35 pm - 9:35 am
IAD
-
SIN
30h 00m1 stop
Multiple Airlines Logo
8:20 am - 10:05 am
SIN
-
IAD
37h 45m2 stops
$1,107Multiple Airlines
Sun, Mar 8 - Tue, Mar 17
Multiple Airlines Logo
2:35 pm - 9:35 am
IAD
-
SIN
30h 00m1 stop
Multiple Airlines Logo
8:20 am - 9:05 am
SIN
-
IAD
37h 45m2 stops
$1,108Multiple Airlines
Thu, Jan 22 - Thu, Jan 29
Turkish Airlines Logo
10:15 pm - 8:45 am
IAD
-
SIN
22h 30m1 stop
Turkish Airlines Logo
11:25 pm - 12:45 pm
SIN
-
IAD
25h 20m1 stop
$1,109Turkish Airlines
Mon, Mar 9 - Sat, Mar 21
United Airlines Logo
1:00 pm - 7:00 am
DCA
-
SIN
30h 00m2 stops
United Airlines Logo
10:10 am - 9:45 pm
SIN
-
DCA
23h 35m1 stop
$1,126United Airlines
Tue, Mar 10 - Wed, Mar 18
American Airlines Logo
11:53 am - 6:35 am
BWI
-
SIN
29h 42m2 stops
American Airlines Logo
2:20 am - 6:04 pm
SIN
-
BWI
28h 44m2 stops
$1,127American Airlines
Mon, Feb 16 - Mon, Feb 23
United Airlines Logo
7:00 am - 8:15 pm
DCA
-
SIN
25h 15m1 stop
United Airlines Logo
10:20 pm - 9:54 am
SIN
-
DCA
23h 34m2 stops
$1,130United Airlines
Mon, Mar 9 - Thu, Mar 19
American Airlines Logo
5:00 am - 12:50 am
BWI
-
SIN
30h 50m2 stops
American Airlines Logo
1:55 am - 10:35 pm
SIN
-
BWI
32h 40m2 stops
$1,130American Airlines
Wed, Feb 18 - Tue, Sep 15

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

Our best Japan Airlines deals on Washington, D.C. to Singapore flight tickets
Japan Airlines
Jan 22
DCA3:24 pmWashington, D.C. Reagan-National
26h 11m
2 stops
SIN6:35 amSingapore Changi
Jan 25
SIN10:25 pmSingapore Changi
35h 19m
2 stops
DCA8:44 pmWashington, D.C. Reagan-National
$1,114
Japan Airlines
Jan 20
DCA8:47 amWashington, D.C. Reagan-National
27h 03m
2 stops
SIN12:50 amSingapore Changi
Jan 28
SIN8:15 amSingapore Changi
25h 29m
2 stops
DCA8:44 pmWashington, D.C. Reagan-National
$1,120
Japan Airlines
Jan 28
DCA6:59 amWashington, D.C. Reagan-National
34h 36m
2 stops
SIN6:35 amSingapore Changi
Feb 2
SIN2:20 amSingapore Changi
23h 24m
2 stops
DCA12:44 pmWashington, D.C. Reagan-National
$1,134

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

Our best Singapore Airlines deals on Washington, D.C. to Singapore flight tickets
Singapore Airlines
Apr 4
BWI7:04 pmBaltimore/Washington
34h 31m
1 stop
SIN5:35 pmSingapore Changi
Apr 10
SIN8:45 pmSingapore Changi
32h 23m
1 stop
BWI5:08 pmBaltimore/Washington
$1,060
Singapore Airlines
Mar 25
BWI7:04 pmBaltimore/Washington
34h 41m
1 stop
SIN5:45 pmSingapore Changi
Apr 6
SIN8:45 pmSingapore Changi
32h 23m
1 stop
BWI5:08 pmBaltimore/Washington
$1,116
Singapore Airlines
Feb 21
DCA6:59 pmWashington, D.C. Reagan-National
35h 06m
1 stop
SIN7:05 pmSingapore Changi
Mar 7
SIN9:00 amSingapore Changi
25h 59m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$1,139

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 January 8, 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

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Sat 4/4

7:04 pm-5:35 pm

1 stop34h 31m

Singapore Changi

Fri 4/10

8:45 pm-5:08 pm

1 stop32h 23m

$1,060

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 6/9

9:45 am-5:15 am

2 stops31h 30m

Singapore Changi

Tue 6/23

7:00 am-8:32 pm

2 stops25h 32m

$1,104

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 4/23

9:55 am-5:15 am

2 stops31h 20m

Singapore Changi

Sun 4/26

7:00 am-8:29 pm

2 stops25h 29m

$1,106

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 3/8

3:35 pm-9:35 am

1 stop30h 00m

Singapore Changi

Tue 3/17

8:20 am-10:05 am

2 stops37h 45m

$1,107

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 1/22

2:35 pm-9:35 am

1 stop30h 00m

Singapore Changi

Thu 1/29

8:20 am-9:05 am

2 stops37h 45m

$1,108

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 3/9

10:15 pm-8:45 am

1 stop22h 30m

Singapore Changi

Sat 3/21

11:25 pm-12:45 pm

1 stop25h 20m

$1,109

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 3/10

1:00 pm-7:00 am

2 stops30h 00m

Singapore Changi

Wed 3/18

10:10 am-9:45 pm

1 stop23h 35m

$1,126

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Mon 2/16

11:53 am-6:35 am

2 stops29h 42m

Singapore Changi

Mon 2/23

2:20 am-6:04 pm

2 stops28h 44m

$1,127

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Mon 3/9

7:00 am-8:15 pm

1 stop25h 15m

Singapore Changi

Thu 3/19

10:20 pm-9:54 am

2 stops23h 34m

$1,130

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Wed 2/18

5:00 am-12:50 am

2 stops30h 50m

Singapore Changi

Tue 9/15

1:55 am-10:35 pm

2 stops32h 40m

$1,130

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 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 $723. 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 $930.

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 $1,253 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 $1,099 on momondo.

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

You could potentially save up to 14% on your flight if you consider stops on a Washington, D.C. to Singapore flight.

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

As of January 2026, prices for Washington, D.C. to Singapore flights are approximately 2% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Singapore

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

Cheap Washington, D.C. to Singapore (WAS to SIN) 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

23h 40m

Direct flights

None
The fastest flight from Washington, D.C. to Singapore takes 23h 40m
There are no direct flights from Washington, D.C. to Singapore. There are no popular flight routes from Washington, D.C. to Singapore.
Search flight deals

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

    The straight-line distance from Washington, D.C. to Singapore Changi is 9651.2 mi. A reasonable flight in good conditions will take 23h 40m.

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

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

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

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

    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 Changi Airport.

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

    The travel and health documents you'll need for your trip to Singapore Changi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Singapore Changi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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
Air IndiaPriceFrom $807Free CancellationRating
5.5
2,974 reviews
Search Air India flights
Etihad AirwaysPriceFrom $833Free CancellationRating
7.3
1,361 reviews
Search Etihad Airways flights
Turkish AirlinesPriceFrom $862Free CancellationRating
7.3
4,154 reviews
Search Turkish Airlines flights
Korean AirPriceFrom $944Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
Qatar AirwaysPriceFrom $1,031Free CancellationRating
7.4
3,702 reviews
Search Qatar Airways flights
JetBluePriceFrom $1,066Free CancellationRating
7.2
2,892 reviews
Search JetBlue flights
United AirlinesPriceFrom $1,174Free CancellationRating
7.4
9,143 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,196Free CancellationRating
7.2
11,097 reviews
Search American Airlines flights
ANAPriceFrom $1,499Free CancellationRating
8.4
1,063 reviews
Search ANA flights

Why use momondo?

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

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

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

All flight searches from Washington, D.C. to Singapore on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Washington, D.C. to Singapore flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Washington, D.C. to Singapore flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Fly your favorite airline to Singapore

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
United Airlines
Turkish Airlines
Qatar Airways
JetBlue
Etihad Airways
Korean Air
Air India
American Airlines
ANA