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

Istanbul (IST) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

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

Flights via New Delhi (DEL) offer the lowest average round-trip price of $1,179.

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 24h 03m on average. If you fly from Baltimore (another popular airport in Washington, D.C.) to Singapore, then the average flight time is 24h 35m.

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 40m.

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: 21h 45m.

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

Qatar Airways, Etihad Airways, and Air Canada are the most popular carriers operating from Washington, D.C. to Singapore Changi

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 34% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 7 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

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 April 2026, there are 7 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.

$459 Cheap Flights from Washington, D.C. to Singapore in 2026

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9:00 pm - 11:25 am

IAD

SIN

50h 25m

2 stops

3:35 pm - 6:10 pm

SIN

IAD

38h 35m

2 stops

$1,150Qatar Airways

Fri, May 1 - Fri, May 8

9:00 pm - 10:15 am

IAD

SIN

49h 15m

2 stops

1:40 pm - 6:10 pm

SIN

IAD

40h 30m

2 stops

$1,151Qatar Airways

Fri, May 1 - Fri, May 8

9:45 pm - 9:30 am

IAD

SIN

23h 45m

1 stop

12:50 pm - 11:35 am

SIN

IAD

34h 45m

1 stop

$1,152Turkish Airlines

Mon, Apr 27 - Thu, May 21

9:00 pm - 4:15 pm

IAD

SIN

31h 15m

1 stop

9:15 pm - 6:10 pm

SIN

IAD

32h 55m

2 stops

$1,154Qatar Airways

Fri, Apr 24 - Sat, May 9

9:45 pm - 8:45 am

IAD

SIN

23h 00m

1 stop

10:25 am - 11:35 am

SIN

IAD

37h 10m

1 stop

$1,155Turkish Airlines

Mon, May 11 - Tue, May 26

3:10 pm - 9:40 am

IAD

SIN

30h 30m

1 stop

9:00 pm - 9:45 am

SIN

IAD

24h 45m

1 stop

$1,158Etihad Airways

Sun, Jun 7 - Mon, Jun 22

12:35 pm - 5:15 am

IAD

SIN

52h 40m

2 stops

7:00 am - 7:00 pm

SIN

IAD

48h 00m

2 stops

$1,164Air Canada

Sat, Sep 19 - Sat, Sep 26

9:30 am - 7:40 am

DCA

SIN

34h 10m

1 stop

8:45 pm - 8:00 pm

SIN

DCA

35h 15m

1 stop

$1,171Multiple Airlines

Tue, Sep 1 - Tue, Sep 15

12:45 pm - 5:15 am

DCA

SIN

52h 30m

2 stops

7:00 am - 10:19 am

SIN

DCA

39h 19m

2 stops

$1,204Air Canada

Thu, May 21 - Tue, Jun 2

6:16 pm - 12:35 pm

BWI

SIN

30h 19m

2 stops

1:45 pm - 6:30 am

SIN

BWI

28h 45m

2 stops

$1,281Multiple Airlines

Tue, Sep 1 - Tue, Sep 15

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

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

Qatar Airways

Apr 25

IAD9:00 pmWashington, D.C. Dulles Intl

33h 15m

2 stops

SIN6:15 pmSingapore Changi

May 26

SIN1:40 pmSingapore Changi

40h 30m

2 stops

IAD6:10 pmWashington, D.C. Dulles Intl

$1,148

Qatar Airways

May 1

IAD9:00 pmWashington, D.C. Dulles Intl

50h 25m

2 stops

SIN11:25 amSingapore Changi

May 8

SIN3:35 pmSingapore Changi

38h 35m

2 stops

IAD6:10 pmWashington, D.C. Dulles Intl

$1,150

Qatar Airways

May 1

IAD9:00 pmWashington, D.C. Dulles Intl

49h 15m

2 stops

SIN10:15 amSingapore Changi

May 8

SIN1:40 pmSingapore Changi

40h 30m

2 stops

IAD6:10 pmWashington, D.C. Dulles Intl

$1,151

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

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

Singapore Airlines

Sep 15

BWI5:45 pmBaltimore/Washington

25h 55m

1 stop

SIN7:40 amSingapore Changi

Sep 18

SIN6:40 pmSingapore Changi

24h 15m

1 stop

BWI6:55 amBaltimore/Washington

$1,257

Singapore Airlines

Sep 22

BWI5:45 pmBaltimore/Washington

25h 55m

1 stop

SIN7:40 amSingapore Changi

Oct 1

SIN9:25 amSingapore Changi

43h 22m

2 stops

BWI4:47 pmBaltimore/Washington

$1,284

Singapore Airlines

Oct 8

BWI5:50 pmBaltimore/Washington

25h 50m

1 stop

SIN7:40 amSingapore Changi

Oct 12

SIN8:45 pmSingapore Changi

32h 02m

1 stop

BWI4:47 pmBaltimore/Washington

$1,346

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

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 5/1

9:00 pm-11:25 am

2 stops50h 25m

Singapore Changi

Fri 5/8

3:35 pm-6:10 pm

2 stops38h 35m

$1,150

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 5/1

9:00 pm-10:15 am

2 stops49h 15m

Singapore Changi

Fri 5/8

1:40 pm-6:10 pm

2 stops40h 30m

$1,151

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 4/27

9:45 pm-9:30 am

1 stop23h 45m

Singapore Changi

Thu 5/21

12:50 pm-11:35 am

1 stop34h 45m

$1,152

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 4/24

9:00 pm-4:15 pm

1 stop31h 15m

Singapore Changi

Sat 5/9

9:15 pm-6:10 pm

2 stops32h 55m

$1,154

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 5/11

9:45 pm-8:45 am

1 stop23h 00m

Singapore Changi

Tue 5/26

10:25 am-11:35 am

1 stop37h 10m

$1,155

Quickest round-trip

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 6/7

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Mon 6/22

9:00 pm-9:45 am

1 stop24h 45m

$1,158

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 9/19

12:35 pm-5:15 am

2 stops52h 40m

Singapore Changi

Sat 9/26

7:00 am-7:00 pm

2 stops48h 00m

$1,164

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 9/1

9:30 am-7:40 am

1 stop34h 10m

Singapore Changi

Tue 9/15

8:45 pm-8:00 pm

1 stop35h 15m

$1,171

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Thu 5/21

12:45 pm-5:15 am

2 stops52h 30m

Singapore Changi

Tue 6/2

7:00 am-10:19 am

2 stops39h 19m

$1,204

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Tue 9/1

6:16 pm-12:35 pm

2 stops30h 19m

Singapore Changi

Tue 9/15

1:45 pm-6:30 am

2 stops28h 45m

$1,281

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 $738. 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 $952.

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 $1,268 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 12% 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 April 2026, prices for Washington, D.C. to Singapore flights are approximately 17% 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 50m
Direct flights	None

The fastest flight from Washington, D.C. to Singapore takes 23h 50m

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

Frequently asked questions about flying from Washington, D.C. to Singapore

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 50m.
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 April 2026, there are 7 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 United Airlines, representing 25% of all bookings. The subsequent popular airlines are JetBlue at 20%, Turkish Airlines at 18%, and Qatar Airways at 15%.

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 1,204 reviews	Search Korean Air flights
Air India	PriceFrom $807	Free Cancellation	Rating 5.5 2,968 reviews	Search Air India flights
Etihad Airways	PriceFrom $828	Free Cancellation	Rating 7.3 1,430 reviews	Search Etihad Airways flights
Turkish Airlines	PriceFrom $917	Free Cancellation	Rating 7.3 4,304 reviews	Search Turkish Airlines flights
Qatar Airways	PriceFrom $1,063	Free Cancellation	Rating 7.4 3,728 reviews	Search Qatar Airways flights
United Airlines	PriceFrom $1,125	Free Cancellation	Rating 7.4 9,582 reviews	Search United Airlines flights
JetBlue	PriceFrom $1,245	Free Cancellation	Rating 7.2 2,932 reviews	Search JetBlue 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 $459

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 5/3. 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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Qatar Airways flights from Washington, D.C. to Singapore

Our best Qatar Airways 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

Frequently asked questions about flying 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

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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