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Cheap flights from Washington, D.C. to Singapore from $411

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 3/7. 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
7:14 pm - 5:45 pm
BWI
-
SIN
33h 31m1 stop
Singapore Airlines Logo
9:00 am - 6:14 pm
SIN
-
BWI
22h 14m1 stop
$1,090Singapore Airlines
Sat, Jan 31 - Sat, Feb 7
Singapore Airlines Logo
8:00 am - 5:30 am
BWI
-
SIN
32h 30m1 stop
Singapore Airlines Logo
9:00 am - 6:14 pm
SIN
-
BWI
22h 14m1 stop
$1,115Singapore Airlines
Sun, Jan 25 - Thu, Jan 29
American Airlines Logo
6:07 am - 12:50 am
BWI
-
SIN
29h 43m2 stops
American Airlines Logo
2:20 am - 5:52 pm
SIN
-
BWI
28h 32m2 stops
$1,129American Airlines
Thu, Jan 29 - Wed, Feb 4
Korean Air Logo
7:20 am - 5:00 am
IAD
-
SIN
33h 40m2 stops
Korean Air Logo
7:30 am - 11:15 am
SIN
-
IAD
39h 45m1 stop
$1,183Korean Air
Sun, Apr 5 - Tue, Apr 21
United Airlines Logo
7:00 am - 8:00 am
DCA
-
SIN
36h 00m1 stop
United Airlines Logo
10:10 am - 9:52 pm
SIN
-
DCA
24h 42m1 stop
$1,186United Airlines
Wed, Jan 14 - Sun, Jan 25
United Airlines Logo
10:20 pm - 8:15 pm
IAD
-
SIN
32h 55m1 stop
United Airlines Logo
6:35 am - 9:13 pm
SIN
-
IAD
27h 38m2 stops
$1,187United Airlines
Fri, Jan 9 - Thu, Jan 15
Turkish Airlines Logo
1:30 pm - 5:35 pm
IAD
-
SIN
39h 05m1 stop
Turkish Airlines Logo
11:40 am - 11:45 am
SIN
-
IAD
37h 05m1 stop
$1,193Turkish Airlines
Thu, Jan 8 - Wed, Jan 14
Korean Air Logo
7:59 am - 11:40 pm
DCA
-
SIN
27h 41m2 stops
Korean Air Logo
10:30 pm - 6:20 pm
SIN
-
DCA
31h 50m2 stops
$1,194Korean Air
Sat, Apr 11 - Wed, Apr 22
Air Canada Logo
9:40 am - 6:55 am
DCA
-
SIN
32h 15m2 stops
Air Canada Logo
8:50 am - 12:19 pm
SIN
-
DCA
40h 29m2 stops
$1,196Air Canada
Thu, Jan 15 - Sat, Jan 24
Air Canada Logo
6:59 am - 6:55 am
DCA
-
SIN
34h 56m2 stops
Air Canada Logo
8:50 am - 12:19 pm
SIN
-
DCA
40h 29m2 stops
$1,199Air Canada
Mon, Jan 12 - Tue, Jan 20

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

Our best Singapore Airlines deals on Washington, D.C. to Singapore flight tickets
Singapore Airlines
Jan 31
BWI7:14 pmBaltimore/Washington
33h 31m
1 stop
SIN5:45 pmSingapore Changi
Feb 7
SIN9:00 amSingapore Changi
22h 14m
1 stop
BWI6:14 pmBaltimore/Washington
$1,090
Find similar
Singapore Airlines
Jan 25
BWI8:00 amBaltimore/Washington
32h 30m
1 stop
SIN5:30 amSingapore Changi
Jan 29
SIN9:00 amSingapore Changi
22h 14m
1 stop
BWI6:14 pmBaltimore/Washington
$1,115
Find similar
Singapore Airlines
Apr 8
BWI6:55 pmBaltimore/Washington
34h 40m
1 stop
SIN5:35 pmSingapore Changi
Apr 22
SIN8:45 pmSingapore Changi
32h 22m
1 stop
BWI5:07 pmBaltimore/Washington
$1,130
Find similar

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

Our best American Airlines deals on Washington, D.C. to Singapore flight tickets
American Airlines
Jan 29
BWI6:07 amBaltimore/Washington
29h 43m
2 stops
SIN12:50 amSingapore Changi
Feb 4
SIN2:20 amSingapore Changi
28h 32m
2 stops
BWI5:52 pmBaltimore/Washington
$1,129
Find similar
American Airlines
Jan 31
BWI12:50 pmBaltimore/Washington
28h 45m
2 stops
SIN6:35 amSingapore Changi
Feb 9
SIN2:20 amSingapore Changi
28h 32m
2 stops
BWI5:52 pmBaltimore/Washington
$1,169
Find similar
American Airlines
Feb 1
BWI6:00 amBaltimore/Washington
29h 50m
2 stops
SIN12:50 amSingapore Changi
Feb 9
SIN2:20 amSingapore Changi
33h 50m
2 stops
BWI11:10 pmBaltimore/Washington
$1,172
Find similar

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 18, 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

Sat 2/7

9:00 am-6:14 pm

1 stop22h 14m

$1,090

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Sun 1/25

8:00 am-5:30 am

1 stop32h 30m

Singapore Changi

Thu 1/29

9:00 am-6:14 pm

1 stop22h 14m

$1,115

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Thu 1/29

6:07 am-12:50 am

2 stops29h 43m

Singapore Changi

Wed 2/4

2:20 am-5:52 pm

2 stops28h 32m

$1,129

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 4/5

7:20 am-5:00 am

2 stops33h 40m

Singapore Changi

Tue 4/21

7:30 am-11:15 am

1 stop39h 45m

$1,183

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 1/14

7:00 am-8:00 am

1 stop36h 00m

Singapore Changi

Sun 1/25

10:10 am-9:52 pm

1 stop24h 42m

$1,186

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 1/9

10:20 pm-8:15 pm

1 stop32h 55m

Singapore Changi

Thu 1/15

6:35 am-9:13 pm

2 stops27h 38m

$1,187

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 1/8

1:30 pm-5:35 pm

1 stop39h 05m

Singapore Changi

Wed 1/14

11:40 am-11:45 am

1 stop37h 05m

$1,193

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sat 4/11

7:59 am-11:40 pm

2 stops27h 41m

Singapore Changi

Wed 4/22

10:30 pm-6:20 pm

2 stops31h 50m

$1,194

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 1/15

9:40 am-6:55 am

2 stops32h 15m

Singapore Changi

Sat 1/24

8:50 am-12:19 pm

2 stops40h 29m

$1,196

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Mon 1/12

6:59 am-6:55 am

2 stops34h 56m

Singapore Changi

Tue 1/20

8:50 am-12:19 pm

2 stops40h 29m

$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 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 $946.

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 $1,240 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 $1,141 on momondo.

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

You could potentially save up to 6% 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 29% 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 25m

Direct flights

None
The fastest flight from Washington, D.C. to Singapore takes 23h 25m
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 25m.

  • 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
2,952 reviews
Search Air India flights
Etihad AirwaysPriceFrom $833Free CancellationRating
7.4
1,332 reviews
Search Etihad Airways flights
Turkish AirlinesPriceFrom $856Free CancellationRating
7.3
4,105 reviews
Search Turkish Airlines flights
Korean AirPriceFrom $944Free CancellationRating
8.4
1,186 reviews
Search Korean Air flights
Qatar AirwaysPriceFrom $1,023Free CancellationRating
7.4
3,686 reviews
Search Qatar Airways flights
JetBluePriceFrom $1,066Free CancellationRating
7.2
2,897 reviews
Search JetBlue flights
United AirlinesPriceFrom $1,174Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,196Free CancellationRating
7.2
11,055 reviews
Search American Airlines flights
ANAPriceFrom $1,499Free CancellationRating
8.4
1,030 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
Turkish Airlines
United Airlines
Qatar Airways
JetBlue
Etihad Airways
Korean Air
Air India
American Airlines
ANA