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Cheap flights from Washington, D.C. to Singapore from $452

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 1/18. 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

Enter your travel dates to find the best prices.
Singapore Airlines Logo
7:14 pm - 5:45 pmBWI-SIN
33h 31m1 stop
Singapore Airlines Logo
9:00 am - 6:14 pmSIN-BWI
22h 14m1 stop
$977Singapore Airlines
Find Deal
Sat, Jan 31 - Fri, Feb 6
Singapore Airlines Logo
7:14 pm - 5:45 pmBWI-SIN
33h 31m1 stop
Singapore Airlines Logo
9:00 am - 6:14 pmSIN-BWI
22h 14m1 stop
$1,015Singapore Airlines
Find Deal
Wed, Jan 28 - Fri, Feb 6
Multiple Airlines Logo
7:40 pm - 5:35 pmBWI-SIN
32h 55m3 stops
Multiple Airlines Logo
11:25 pm - 6:40 pmSIN-BWI
32h 15m3 stops
$1,039Multiple Airlines
Find Deal
Sat, Jan 31 - Fri, Feb 6
Singapore Airlines Logo
7:14 pm - 5:45 pmBWI-SIN
33h 31m1 stop
Singapore Airlines Logo
8:45 pm - 9:26 pmSIN-BWI
37h 41m1 stop
$1,056Singapore Airlines
Find Deal
Mon, Jan 26 - Mon, Feb 2
United Airlines Logo
8:42 am - 8:00 amBWI-SIN
34h 18m1 stop
United Airlines Logo
10:20 pm - 5:20 pmSIN-BWI
32h 00m1 stop
$1,107United Airlines
Find Deal
Tue, Feb 17 - Tue, Feb 24
United Airlines Logo
8:00 am - 8:00 amBWI-SIN
35h 00m2 stops
United Airlines Logo
10:20 pm - 5:20 pmSIN-BWI
32h 00m1 stop
$1,111United Airlines
Find Deal
Tue, Feb 17 - Tue, Feb 24
Etihad Airways Logo
3:35 pm - 9:35 amIAD-SIN
30h 00m1 stop
Etihad Airways Logo
9:10 pm - 9:45 amSIN-IAD
24h 35m1 stop
$1,194Etihad Airways
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Thu, Mar 26 - Sun, Apr 5
Qatar Airways Logo
8:05 pm - 2:55 pmIAD-SIN
29h 50m1 stop
Qatar Airways Logo
7:30 pm - 3:55 pmSIN-IAD
33h 25m2 stops
$1,198Qatar Airways
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Wed, Feb 18 - Wed, Feb 25
Air Canada Logo
12:55 pm - 7:00 amDCA-SIN
53h 05m2 stops
Air Canada Logo
8:50 am - 12:19 pmSIN-DCA
40h 29m2 stops
$1,198Air Canada
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Tue, Jan 20 - Sat, Jan 24
Air Canada Logo
6:00 am - 7:00 amDCA-SIN
36h 00m2 stops
Air Canada Logo
8:50 am - 9:58 pmSIN-DCA
26h 08m2 stops
$1,199Air Canada
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Fri, Jan 23 - Fri, Jan 30

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

Our best United Airlines deals on Washington, D.C. to Singapore flight tickets
United Airlines
Feb 17
BWI8:42 amBaltimore/Washington
34h 18m
1 stop
SIN8:00 amSingapore Changi
Feb 24
SIN10:20 pmSingapore Changi
32h 00m
1 stop
BWI5:20 pmBaltimore/Washington
$1,107
Find similar
United Airlines
Feb 17
BWI8:00 amBaltimore/Washington
35h 00m
2 stops
SIN8:00 amSingapore Changi
Feb 24
SIN10:20 pmSingapore Changi
32h 00m
1 stop
BWI5:20 pmBaltimore/Washington
$1,111
Find similar
United Airlines
Jan 15
BWI10:05 amBaltimore/Washington
31h 50m
2 stops
SIN6:55 amSingapore Changi
Jan 22
SIN10:10 amSingapore Changi
25h 15m
2 stops
BWI10:25 pmBaltimore/Washington
$1,116
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Etihad Airways flights from Washington, D.C. to Singapore

Our best Etihad Airways deals on Washington, D.C. to Singapore flight tickets
Etihad Airways
Mar 26
IAD3:35 pmWashington, D.C. Dulles Intl
30h 00m
1 stop
SIN9:35 amSingapore Changi
Apr 5
SIN9:10 pmSingapore Changi
24h 35m
1 stop
IAD9:45 amWashington, D.C. Dulles Intl
$1,194
Find similar
Etihad Airways
Mar 27
IAD3:35 pmWashington, D.C. Dulles Intl
30h 00m
1 stop
SIN9:35 amSingapore Changi
Apr 5
SIN9:10 pmSingapore Changi
24h 35m
1 stop
IAD9:45 amWashington, D.C. Dulles Intl
$1,215
Find similar
Etihad Airways
May 22
IAD3:35 pmWashington, D.C. Dulles Intl
29h 40m
1 stop
SIN9:15 amSingapore Changi
May 29
SIN9:10 pmSingapore Changi
24h 35m
1 stop
IAD9:45 amWashington, D.C. Dulles Intl
$1,248
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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 December 3, 2025.
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 1/31

7:14 pm-5:45 pm

1 stop33h 31m

Singapore Changi

Fri 2/6

9:00 am-6:14 pm

1 stop22h 14m

$977

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Wed 1/28

7:14 pm-5:45 pm

1 stop33h 31m

Singapore Changi

Fri 2/6

9:00 am-6:14 pm

1 stop22h 14m

$1,015

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Sat 1/31

7:40 pm-5:35 pm

3 stops32h 55m

Singapore Changi

Fri 2/6

11:25 pm-6:40 pm

3 stops32h 15m

$1,039

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Mon 1/26

7:14 pm-5:45 pm

1 stop33h 31m

Singapore Changi

Mon 2/2

8:45 pm-9:26 pm

1 stop37h 41m

$1,056

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Tue 2/17

8:42 am-8:00 am

1 stop34h 18m

Singapore Changi

Tue 2/24

10:20 pm-5:20 pm

1 stop32h 00m

$1,107

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Tue 2/17

8:00 am-8:00 am

2 stops35h 00m

Singapore Changi

Tue 2/24

10:20 pm-5:20 pm

1 stop32h 00m

$1,111

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 3/26

3:35 pm-9:35 am

1 stop30h 00m

Singapore Changi

Sun 4/5

9:10 pm-9:45 am

1 stop24h 35m

$1,194

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 2/18

8:05 pm-2:55 pm

1 stop29h 50m

Singapore Changi

Wed 2/25

7:30 pm-3:55 pm

2 stops33h 25m

$1,198

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 1/20

12:55 pm-7:00 am

2 stops53h 05m

Singapore Changi

Sat 1/24

8:50 am-12:19 pm

2 stops40h 29m

$1,198

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Fri 1/23

6:00 am-7:00 am

2 stops36h 00m

Singapore Changi

Fri 1/30

8:50 am-9:58 pm

2 stops26h 08m

$1,199

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 typical price of a round-trip flight between Washington, D.C. and Singapore?

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 $732. 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 $945.

What is the cheapest day to depart on your flight to Singapore?

The cheapest day to depart from Washington, D.C. to Singapore is on a Wednesday when prices can be found for as low as $1,184. The most expensive day to fly to Singapore is Saturday, with ticket prices averaging around $1,370.

What is the cheapest time of day to depart on your flight to Singapore?

At noon is the cheapest time of day to fly from Washington, D.C. to Singapore when you can find flight prices for as low as $1,137. Flying to Singapore at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,511 on average. Flights to Singapore from Washington, D.C. 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 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 $1,212 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 $1,136 on momondo.

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

You could potentially save up to 3% 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 December 2025, prices for Washington, D.C. to Singapore flights are approximately 32% 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

25h 01m

Direct flights

None
The fastest flight from Washington, D.C. to Singapore takes 25h 01m
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
2,950 reviews
Search Air India flights
Etihad AirwaysPriceFrom $833Free CancellationRating
7.4
1,326 reviews
Search Etihad Airways flights
Turkish AirlinesPriceFrom $842Free CancellationRating
7.3
4,075 reviews
Search Turkish Airlines flights
Korean AirPriceFrom $944Free CancellationRating
8.4
1,177 reviews
Search Korean Air flights
Qatar AirwaysPriceFrom $1,014Free CancellationRating
7.4
3,678 reviews
Search Qatar Airways flights
JetBluePriceFrom $1,043Free CancellationRating
7.2
2,900 reviews
Search JetBlue flights
United AirlinesPriceFrom $1,174Free CancellationRating
7.4
9,065 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,196Free CancellationRating
7.2
11,044 reviews
Search American Airlines flights
ANAPriceFrom $1,499Free CancellationRating
8.4
1,017 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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Turkish Airlines
United Airlines
Qatar Airways
JetBlue
Etihad Airways
Korean Air
Air India
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ANA