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

Etihad Airways, Qatar Airways, and Air Canada are the most popular carriers 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: 30% 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 33% 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.

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 39m.

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 25h 52m on average. If you fly from Baltimore (another popular airport in Washington, D.C.) to Singapore, then the average flight time is 27h 45m.

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

Flights via Istanbul (IST) offer the lowest average round-trip price of $1,066.

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.

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 May 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.

$492 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 $1,584 to $1,228. The lowest price recently found on this route was $1,025.

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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

$1,025Etihad Airways

Mon, Aug 10 - Mon, Aug 24

3:10 pm - 9:40 am

IAD

SIN

30h 30m

1 stop

9:00 pm - 9:45 am

SIN

IAD

24h 45m

1 stop

$1,036Etihad Airways

Fri, Aug 14 - Tue, Aug 25

3:10 pm - 9:40 am

IAD

SIN

30h 30m

1 stop

9:00 pm - 9:45 am

SIN

IAD

24h 45m

1 stop

$1,073Etihad Airways

Tue, Jun 2 - Tue, Jun 16

4:20 pm - 5:15 am

DCA

SIN

48h 55m

2 stops

7:00 am - 10:18 am

SIN

DCA

39h 18m

2 stops

$1,307Air Canada

Wed, Aug 12 - Tue, Aug 18

6:59 am - 5:15 am

DCA

SIN

34h 16m

2 stops

7:00 am - 9:48 pm

SIN

DCA

26h 48m

2 stops

$1,337Air Canada

Fri, Aug 14 - Tue, Aug 25

7:16 am - 6:30 pm

BWI

SIN

47h 14m

2 stops

9:35 pm - 9:59 pm

SIN

BWI

36h 24m

2 stops

$1,403Finnair

Fri, Aug 14 - Tue, Aug 25

3:00 pm - 6:30 pm

BWI

SIN

63h 30m

2 stops

9:35 pm - 11:43 pm

SIN

BWI

38h 08m

2 stops

$1,418Finnair

Mon, Jun 29 - Mon, Jul 6

6:03 am - 6:30 pm

BWI

SIN

48h 27m

2 stops

9:35 pm - 11:43 pm

SIN

BWI

38h 08m

2 stops

$1,509Multiple Airlines

Wed, Jul 1 - Wed, Jul 8

6:07 pm - 12:35 pm

BWI

SIN

30h 28m

2 stops

1:45 pm - 6:35 am

SIN

BWI

28h 50m

2 stops

$1,584Multiple Airlines

Sat, Aug 8 - Mon, Aug 17

6:50 pm - 12:55 am

BWI

SIN

42h 05m

2 stops

8:45 pm - 4:35 pm

SIN

BWI

31h 50m

1 stop

$1,657Singapore Airlines

Sat, Jul 25 - Sun, Aug 16

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

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

Qatar Airways

Sep 10

IAD9:00 pmWashington, D.C. Dulles Intl

30h 45m

1 stop

SIN3:45 pmSingapore Changi

Sep 24

SIN7:40 pmSingapore Changi

32h 00m

1 stop

IAD3:40 pmWashington, D.C. Dulles Intl

$1,077

Qatar Airways

Oct 8

IAD9:00 pmWashington, D.C. Dulles Intl

30h 45m

1 stop

SIN3:45 pmSingapore Changi

Nov 10

SIN3:15 amSingapore Changi

25h 40m

1 stop

IAD3:55 pmWashington, D.C. Dulles Intl

$1,099

Qatar Airways

Sep 5

IAD9:00 pmWashington, D.C. Dulles Intl

30h 45m

1 stop

SIN3:45 pmSingapore Changi

Sep 21

SIN7:40 pmSingapore Changi

32h 00m

1 stop

IAD3:40 pmWashington, D.C. Dulles Intl

$1,117

Air Canada flights from Washington, D.C. to Singapore

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

Air Canada

Oct 13

DCA9:40 amWashington, D.C. Reagan-National

31h 35m

2 stops

SIN5:15 amSingapore Changi

Oct 22

SIN7:00 amSingapore Changi

39h 20m

2 stops

DCA10:20 amWashington, D.C. Reagan-National

$1,307

Air Canada

Oct 20

DCA12:40 pmWashington, D.C. Reagan-National

28h 35m

2 stops

SIN5:15 amSingapore Changi

Nov 3

SIN8:50 amSingapore Changi

25h 10m

2 stops

DCA9:00 pmWashington, D.C. Reagan-National

$1,313

Air Canada

Oct 20

DCA12:40 pmWashington, D.C. Reagan-National

28h 35m

2 stops

SIN5:15 amSingapore Changi

Nov 5

SIN8:50 amSingapore Changi

24h 07m

2 stops

DCA7:57 pmWashington, D.C. Reagan-National

$1,318

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 8/10

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Mon 8/24

9:00 pm-9:45 am

1 stop24h 45m

$1,025

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 8/14

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Tue 8/25

9:00 pm-9:45 am

1 stop24h 45m

$1,036

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 6/2

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Tue 6/16

9:00 pm-9:45 am

1 stop24h 45m

$1,073

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 8/12

4:20 pm-5:15 am

2 stops48h 55m

Singapore Changi

Tue 8/18

7:00 am-10:18 am

2 stops39h 18m

$1,307

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Fri 8/14

6:59 am-5:15 am

2 stops34h 16m

Singapore Changi

Tue 8/25

7:00 am-9:48 pm

2 stops26h 48m

$1,337

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Fri 8/14

7:16 am-6:30 pm

2 stops47h 14m

Singapore Changi

Tue 8/25

9:35 pm-9:59 pm

2 stops36h 24m

$1,403

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Mon 6/29

3:00 pm-6:30 pm

2 stops63h 30m

Singapore Changi

Mon 7/6

9:35 pm-11:43 pm

2 stops38h 08m

$1,418

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Wed 7/1

6:03 am-6:30 pm

2 stops48h 27m

Singapore Changi

Wed 7/8

9:35 pm-11:43 pm

2 stops38h 08m

$1,509

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Sat 8/8

6:07 pm-12:35 pm

2 stops30h 28m

Singapore Changi

Mon 8/17

1:45 pm-6:35 am

2 stops28h 50m

$1,584

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Sat 7/25

6:50 pm-12:55 am

2 stops42h 05m

Singapore Changi

Sun 8/16

8:45 pm-4:35 pm

1 stop31h 50m

$1,657

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 September is, on average, the cheapest month to fly to Singapore from Washington, D.C., with most prices found around $343. If you aren’t able to travel to Singapore during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $674.

How far in advance should I book a flight from Washington, D.C. 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 $1,284 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 $961 on momondo.

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

You could potentially save up to 4% 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 May 2026, prices for Washington, D.C. to Singapore flights are approximately 5% more expensive 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 10m
Direct flights	None

The fastest flight from Washington, D.C. to Singapore takes 23h 10m

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 10m.
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 May 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 24% of all bookings. The subsequent popular airlines are JetBlue at 20%, Turkish Airlines at 17%, and Qatar Airways at 16%.

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 1,217 reviews	Search Korean Air flights
Air India	PriceFrom $807	Free Cancellation	Rating 5.5 2,957 reviews	Search Air India flights
Etihad Airways	PriceFrom $828	Free Cancellation	Rating 7.3 1,439 reviews	Search Etihad Airways flights
Turkish Airlines	PriceFrom $917	Free Cancellation	Rating 7.4 4,373 reviews	Search Turkish Airlines flights
Qatar Airways	PriceFrom $1,041	Free Cancellation	Rating 7.4 3,726 reviews	Search Qatar Airways flights
United Airlines	PriceFrom $1,124	Free Cancellation	Rating 7.4 9,737 reviews	Search United Airlines flights
JetBlue	PriceFrom $1,245	Free Cancellation	Rating 7.1 2,979 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 $556

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 8/10. 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

Air Canada flights from Washington, D.C. to Singapore

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

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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 from Washington, D.C. 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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