Which layover airport offers the lowest fares from Washington, D.C. to Singapore?

Flights via Beijing (PEK) offer the lowest average round-trip price of $741.

What is the cheapest airline that flies from Washington, D.C. to Singapore Changi?

United Airlines is the most popular carrier operating from Washington, D.C. to Singapore Changi

Which airport is the most popular layover for flights between Washington, D.C. and Singapore?

Istanbul (IST) was the most common stop: 39% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to Singapore?

United Airlines, Turkish Airlines and Qatar Airways are the top three most popular airlines that fly to Singapore from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 8 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Washington, D.C. to Singapore?

New Delhi (DEL) has the shortest average layover time for this route: 1h 56m.

Which layover airport has the shortest travel time from Washington, D.C. to Singapore?

Flights connecting via New Delhi (DEL) have the shortest average one-way travel time: 22h 15m.

How long does it take to fly to Singapore?

The flight from Washington, D.C. to Singapore depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Baltimore (a popular airport in Washington, D.C.) to Singapore (the most popular airport in Singapore), then the flight time is 24h 30m on average. If you fly from Washington, D.C. (another popular airport in Washington, D.C.) to Singapore, then the average flight time is 24h 35m.

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?

As of March 2026, there are 8 operators available to choose from 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.

$416 Cheap Flights from Washington, D.C. to Singapore in 2026

Q: What is the typical price of a round-trip flight between Washington, D.C. and Singapore?

Prices are currently low for flights on this route. Typical prices usually range from $1,137 to $1,507. The lowest price recently found on this route was $1,042.

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

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Enter your travel dates to find the best prices.

3:10 pm - 9:40 am

IAD

SIN

30h 30m

1 stop

9:00 pm - 9:45 am

SIN

IAD

24h 45m

1 stop

$1,042Etihad Airways

Mon, Mar 30 - Wed, Apr 8

9:00 pm - 10:15 am

IAD

SIN

25h 15m

2 stops

7:40 pm - 4:05 pm

SIN

IAD

32h 25m

1 stop

$1,043Qatar Airways

Sun, Apr 5 - Mon, Apr 20

6:10 am - 11:45 am

IAD

SIN

41h 35m

2 stops

1:45 am - 5:40 am

SIN

IAD

39h 55m

2 stops

$1,048Multiple Airlines

Thu, Apr 23 - Sat, May 9

3:10 pm - 9:40 am

IAD

SIN

30h 30m

1 stop

9:00 pm - 9:45 am

SIN

IAD

24h 45m

1 stop

$1,059Etihad Airways

Mon, Mar 30 - Mon, Apr 6

6:10 am - 11:45 am

IAD

SIN

41h 35m

2 stops

7:20 am - 10:55 am

SIN

IAD

39h 35m

2 stops

$1,065Cathay Pacific

Sun, Sep 6 - Thu, Sep 10

6:41 pm - 7:10 pm

DCA

SIN

36h 29m

1 stop

8:45 pm - 8:00 pm

SIN

DCA

35h 15m

1 stop

$1,083Singapore Airlines

Tue, Apr 21 - Tue, Apr 28

11:00 am - 5:15 am

DCA

SIN

30h 15m

2 stops

7:00 am - 10:19 am

SIN

DCA

39h 19m

2 stops

$1,084Air Canada

Sun, Apr 12 - Tue, May 5

6:00 am - 5:15 am

DCA

SIN

35h 15m

2 stops

7:00 am - 10:19 am

SIN

DCA

39h 19m

2 stops

$1,085Air Canada

Sun, Apr 12 - Tue, May 5

5:30 pm - 11:45 am

DCA

SIN

30h 15m

2 stops

8:05 pm - 12:55 am

SIN

DCA

40h 50m

2 stops

$1,097Cathay Pacific

Thu, Aug 27 - Mon, Sep 28

5:45 pm - 7:40 am

BWI

SIN

25h 55m

1 stop

8:45 pm - 4:47 pm

SIN

BWI

32h 02m

1 stop

$1,100Singapore Airlines

Thu, Aug 27 - Mon, Sep 28

Cathay Pacific flights from Washington, D.C. to Singapore

Our best Cathay Pacific deals on Washington, D.C. to Singapore flight tickets

Cathay Pacific

Sep 6

IAD6:10 amWashington, D.C. Dulles Intl

41h 35m

2 stops

SIN11:45 amSingapore Changi

Sep 10

SIN7:20 amSingapore Changi

39h 35m

2 stops

IAD10:55 amWashington, D.C. Dulles Intl

$1,065

Cathay Pacific

Aug 27

DCA5:30 pmWashington, D.C. Reagan-National

30h 15m

2 stops

SIN11:45 amSingapore Changi

Sep 28

SIN8:05 pmSingapore Changi

40h 50m

2 stops

DCA12:55 amWashington, D.C. Reagan-National

$1,097

Cathay Pacific

Apr 20

DCA6:59 pmWashington, D.C. Reagan-National

28h 46m

2 stops

SIN11:45 amSingapore Changi

Apr 27

SIN9:45 amSingapore Changi

26h 14m

2 stops

DCA11:59 pmWashington, D.C. Reagan-National

$1,111

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 21

DCA6:41 pmWashington, D.C. Reagan-National

36h 29m

1 stop

SIN7:10 pmSingapore Changi

Apr 28

SIN8:45 pmSingapore Changi

35h 15m

1 stop

DCA8:00 pmWashington, D.C. Reagan-National

$1,083

Singapore Airlines

Aug 27

BWI5:45 pmBaltimore/Washington

25h 55m

1 stop

SIN7:40 amSingapore Changi

Sep 28

SIN8:45 pmSingapore Changi

32h 02m

1 stop

BWI4:47 pmBaltimore/Washington

$1,100

Singapore Airlines

Apr 23

BWI7:16 pmBaltimore/Washington

34h 19m

1 stop

SIN5:35 pmSingapore Changi

Apr 28

SIN8:45 pmSingapore Changi

33h 37m

1 stop

BWI6:22 pmBaltimore/Washington

$1,132

momondo Fare Finder

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

Quickest round-trip

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 3/30

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Wed 4/8

9:00 pm-9:45 am

1 stop24h 45m

$1,042

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 4/5

9:00 pm-10:15 am

2 stops25h 15m

Singapore Changi

Mon 4/20

7:40 pm-4:05 pm

1 stop32h 25m

$1,043

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 4/23

6:10 am-11:45 am

2 stops41h 35m

Singapore Changi

Sat 5/9

1:45 am-5:40 am

2 stops39h 55m

$1,048

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 3/30

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Mon 4/6

9:00 pm-9:45 am

1 stop24h 45m

$1,059

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 9/6

6:10 am-11:45 am

2 stops41h 35m

Singapore Changi

Thu 9/10

7:20 am-10:55 am

2 stops39h 35m

$1,065

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 4/21

6:41 pm-7:10 pm

1 stop36h 29m

Singapore Changi

Tue 4/28

8:45 pm-8:00 pm

1 stop35h 15m

$1,083

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sun 4/12

11:00 am-5:15 am

2 stops30h 15m

Singapore Changi

Tue 5/5

7:00 am-10:19 am

2 stops39h 19m

$1,084

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sun 4/12

6:00 am-5:15 am

2 stops35h 15m

Singapore Changi

Tue 5/5

7:00 am-10:19 am

2 stops39h 19m

$1,085

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 8/27

5:30 pm-11:45 am

2 stops30h 15m

Singapore Changi

Mon 9/28

8:05 pm-12:55 am

2 stops40h 50m

$1,097

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Thu 8/27

5:45 pm-7:40 am

1 stop25h 55m

Singapore Changi

Mon 9/28

8:45 pm-4:47 pm

1 stop32h 02m

$1,100

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

Other information

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 $714. 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 $1,272 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 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 March 2026, prices for Washington, D.C. to Singapore flights are approximately 3% 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	22h 15m
Direct flights	None

The fastest flight from Washington, D.C. to Singapore takes 22h 15m

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 22h 15m.
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?
As of March 2026, there are 8 operators available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to Singapore is Turkish Airlines, representing 23% of all bookings. The subsequent popular airlines are JetBlue at 21%, United Airlines at 21%, and Qatar Airways at 18%.

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 Air	PriceFrom $743	Free Cancellation	Rating 8.4 1,202 reviews	Search Korean Air flights
Air India	PriceFrom $807	Free Cancellation	Rating 5.5 2,969 reviews	Search Air India flights
Etihad Airways	PriceFrom $833	Free Cancellation	Rating 7.4 1,425 reviews	Search Etihad Airways flights
Turkish Airlines	PriceFrom $918	Free Cancellation	Rating 7.3 4,249 reviews	Search Turkish Airlines flights
Qatar Airways	PriceFrom $1,031	Free Cancellation	Rating 7.4 3,744 reviews	Search Qatar Airways flights
United Airlines	PriceFrom $1,125	Free Cancellation	Rating 7.4 9,413 reviews	Search United Airlines flights
JetBlue	PriceFrom $1,159	Free Cancellation	Rating 7.2 2,900 reviews	Search JetBlue flights
ANA	PriceFrom $1,161	Free Cancellation	Rating 8.4 1,120 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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Cheap flights from Washington, D.C. to Singapore from $416

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 4/24. 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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Cathay Pacific flights from Washington, D.C. to Singapore

Our best Cathay Pacific deals on Washington, D.C. to Singapore flight tickets

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

Our best Singapore Airlines deals on Washington, D.C. to Singapore flight tickets

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See travel insights to Singapore from

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

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?

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

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

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

What is the cheapest airline that flies from Washington, D.C. to Singapore Changi?

What airlines fly to Singapore?

Which airport is the most popular layover for flights between Washington, D.C. and Singapore?

Which layover airport offers the lowest fares from Washington, D.C. to Singapore?

Which layover airport has the shortest travel time from Washington, D.C. to Singapore?

Which layover airport has the shortest connection time from Washington, D.C. to Singapore?

How long does it take to fly to Singapore?

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

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

Direct flights

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

Why use momondo?

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.

Find better results for your trip to Singapore

Fly your favorite airline to Singapore

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Singapore

List of cabin classes available on flights landing in Singapore. Availability may vary depending on flight origin and airline.

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