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 $779.

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

San Francisco (SFO) has the shortest average layover time for this route: 1h 55m.

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.

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 9 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

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 Washington, D.C. (a popular airport in Washington, D.C.) to Singapore (the most popular airport in Singapore), then the flight time is 23h 15m on average. If you fly from Baltimore (another popular airport in Washington, D.C.) to Singapore, then the average flight time is 23h 35m.

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

Istanbul (IST) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

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 February 2026, there are 9 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.

$415 Cheap Flights from Washington, D.C. to Singapore in 2026

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One-way

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Enter your travel dates to find the best prices.

10:15 pm - 8:45 am

IAD

SIN

22h 30m

1 stop

11:10 am - 11:35 am

SIN

IAD

36h 25m

1 stop

$993Turkish Airlines

Mon, Mar 9 - Mon, Mar 30

9:15 pm - 10:00 am

IAD

SIN

23h 45m

1 stop

10:15 am - 12:45 pm

SIN

IAD

38h 30m

1 stop

$994Turkish Airlines

Mon, Mar 2 - Tue, Mar 24

5:59 pm - 7:05 pm

IAD

SIN

37h 06m

2 stops

1:45 am - 5:40 am

SIN

IAD

39h 55m

2 stops

$998Multiple Airlines

Tue, Apr 14 - Mon, Apr 27

2:30 pm - 5:35 pm

IAD

SIN

39h 05m

1 stop

10:15 am - 8:20 pm

SIN

IAD

46h 05m

1 stop

$999Turkish Airlines

Sun, Mar 22 - Thu, Mar 26

3:10 pm - 9:40 am

IAD

SIN

30h 30m

1 stop

9:00 pm - 2:47 pm

SIN

IAD

29h 47m

2 stops

$1,001Multiple Airlines

Sun, Apr 12 - Tue, May 5

3:35 pm - 9:35 am

IAD

SIN

30h 00m

1 stop

9:00 pm - 9:45 am

SIN

IAD

24h 45m

1 stop

$1,012Etihad Airways

Sun, Mar 8 - Thu, Apr 2

12:55 pm - 5:15 am

DCA

SIN

28h 20m

2 stops

7:00 am - 7:53 pm

SIN

DCA

24h 53m

2 stops

$1,024Air Canada

Tue, Apr 14 - Tue, Apr 28

4:10 pm - 5:15 am

DCA

SIN

49h 05m

2 stops

7:00 am - 7:53 pm

SIN

DCA

24h 53m

2 stops

$1,029Air Canada

Mon, Apr 13 - Thu, Apr 23

6:37 pm - 11:45 am

DCA

SIN

29h 08m

2 stops

7:20 am - 11:59 pm

SIN

DCA

28h 39m

2 stops

$1,056Cathay Pacific

Sun, Apr 5 - Wed, May 20

6:37 pm - 11:45 am

DCA

SIN

29h 08m

2 stops

12:45 pm - 11:59 pm

SIN

DCA

47h 14m

2 stops

$1,086Cathay Pacific

Sat, Apr 4 - Tue, May 19

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

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

Turkish Airlines

Mar 9

IAD10:15 pmWashington, D.C. Dulles Intl

22h 30m

1 stop

SIN8:45 amSingapore Changi

Mar 30

SIN11:10 amSingapore Changi

36h 25m

1 stop

IAD11:35 amWashington, D.C. Dulles Intl

$993

Turkish Airlines

Mar 2

IAD9:15 pmWashington, D.C. Dulles Intl

23h 45m

1 stop

SIN10:00 amSingapore Changi

Mar 24

SIN10:15 amSingapore Changi

38h 30m

1 stop

IAD12:45 pmWashington, D.C. Dulles Intl

$994

Turkish Airlines

Mar 22

IAD2:30 pmWashington, D.C. Dulles Intl

39h 05m

1 stop

SIN5:35 pmSingapore Changi

Mar 26

SIN10:15 amSingapore Changi

46h 05m

1 stop

IAD8:20 pmWashington, D.C. Dulles Intl

$999

Qatar Airways flights from Washington, D.C. to Singapore

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

Qatar Airways

Mar 1

IAD8:05 pmWashington, D.C. Dulles Intl

29h 50m

1 stop

SIN2:55 pmSingapore Changi

Mar 17

SIN8:15 pmSingapore Changi

25h 05m

1 stop

IAD9:20 amWashington, D.C. Dulles Intl

$1,112

Qatar Airways

Feb 22

IAD8:05 pmWashington, D.C. Dulles Intl

25h 15m

2 stops

SIN10:20 amSingapore Changi

Mar 1

SIN8:15 pmSingapore Changi

32h 40m

1 stop

IAD3:55 pmWashington, D.C. Dulles Intl

$1,116

Qatar Airways

Mar 5

IAD8:05 pmWashington, D.C. Dulles Intl

23h 40m

1 stop

SIN8:45 amSingapore Changi

Mar 9

SIN4:35 pmSingapore Changi

36h 20m

2 stops

IAD4:55 pmWashington, D.C. Dulles Intl

$1,118

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

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

Mon 3/30

11:10 am-11:35 am

1 stop36h 25m

$993

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 3/2

9:15 pm-10:00 am

1 stop23h 45m

Singapore Changi

Tue 3/24

10:15 am-12:45 pm

1 stop38h 30m

$994

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 4/14

5:59 pm-7:05 pm

2 stops37h 06m

Singapore Changi

Mon 4/27

1:45 am-5:40 am

2 stops39h 55m

$998

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 3/22

2:30 pm-5:35 pm

1 stop39h 05m

Singapore Changi

Thu 3/26

10:15 am-8:20 pm

1 stop46h 05m

$999

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 4/12

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Tue 5/5

9:00 pm-2:47 pm

2 stops29h 47m

$1,001

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

Thu 4/2

9:00 pm-9:45 am

1 stop24h 45m

$1,012

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 4/14

12:55 pm-5:15 am

2 stops28h 20m

Singapore Changi

Tue 4/28

7:00 am-7:53 pm

2 stops24h 53m

$1,024

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Mon 4/13

4:10 pm-5:15 am

2 stops49h 05m

Singapore Changi

Thu 4/23

7:00 am-7:53 pm

2 stops24h 53m

$1,029

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sun 4/5

6:37 pm-11:45 am

2 stops29h 08m

Singapore Changi

Wed 5/20

7:20 am-11:59 pm

2 stops28h 39m

$1,056

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sat 4/4

6:37 pm-11:45 am

2 stops29h 08m

Singapore Changi

Tue 5/19

12:45 pm-11:59 pm

2 stops47h 14m

$1,086

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

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Other information

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 $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 $1,269 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 $1,073 on momondo.

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

You could potentially save up to 15% 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 February 2026, prices for Washington, D.C. to Singapore flights are approximately 9% 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	21h 35m
Direct flights	None

The fastest flight from Washington, D.C. to Singapore takes 21h 35m

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 21h 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 February 2026, there are 9 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 22% of all bookings. The subsequent popular airlines are JetBlue at 20%, United Airlines at 19%, 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 1,194 reviews	Search Korean Air flights
Air India	PriceFrom $807	Free Cancellation	Rating 5.5 2,968 reviews	Search Air India flights
Etihad Airways	PriceFrom $833	Free Cancellation	Rating 7.3 1,406 reviews	Search Etihad Airways flights
Turkish Airlines	PriceFrom $918	Free Cancellation	Rating 7.3 4,224 reviews	Search Turkish Airlines flights
Qatar Airways	PriceFrom $1,031	Free Cancellation	Rating 7.4 3,739 reviews	Search Qatar Airways flights
JetBlue	PriceFrom $1,066	Free Cancellation	Rating 7.2 2,899 reviews	Search JetBlue flights
United Airlines	PriceFrom $1,125	Free Cancellation	Rating 7.4 9,331 reviews	Search United Airlines flights
ANA	PriceFrom $1,161	Free Cancellation	Rating 8.4 1,097 reviews	Search ANA flights
American Airlines	PriceFrom $1,196	Free Cancellation	Rating 7.2 11,325 reviews	Search American Airlines 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 $415

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 4/27. 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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Turkish Airlines flights from Washington, D.C. to Singapore

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

Qatar Airways flights from Washington, D.C. to Singapore

Our best Qatar Airways 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 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 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?

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

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

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

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

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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