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

IndiGo and Cathay Pacific are the most popular carriers operating from Washington, D.C. to Singapore Changi

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.

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.

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.

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 on average. If you fly from Baltimore (another popular airport in Washington, D.C.) to Singapore, then the average flight time is 24h 06m.

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.

$402 Cheap Flights from Washington, D.C. to Singapore in 2026

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Enter your travel dates to find the best prices.

3:35 pm - 9:35 am

IAD

SIN

30h 00m

1 stop

7:25 pm - 10:05 am

SIN

IAD

26h 40m

1 stop

$847Etihad Airways

Wed, Mar 18 - Wed, Mar 25

2:35 pm - 9:35 am

IAD

SIN

30h 00m

1 stop

7:25 pm - 10:05 am

SIN

IAD

26h 40m

1 stop

$848Etihad Airways

Mon, Mar 2 - Mon, Mar 9

2:35 pm - 9:35 am

IAD

SIN

30h 00m

1 stop

7:25 pm - 10:05 am

SIN

IAD

26h 40m

1 stop

$850Etihad Airways

Mon, Mar 2 - Mon, Mar 9

9:15 pm - 8:35 am

IAD

SIN

22h 20m

1 stop

10:15 am - 7:20 pm

SIN

IAD

46h 05m

1 stop

$882Turkish Airlines

Sun, Mar 1 - Thu, Mar 5

1:30 pm - 8:35 am

IAD

SIN

30h 05m

1 stop

11:40 am - 11:45 am

SIN

IAD

37h 05m

1 stop

$883Turkish Airlines

Tue, Feb 17 - Wed, Mar 4

6:59 pm - 12:25 pm

DCA

SIN

29h 26m

2 stops

8:05 pm - 10:59 pm

SIN

DCA

38h 54m

2 stops

$1,033Cathay Pacific

Sun, Apr 12 - Tue, May 5

6:37 pm - 11:55 am

DCA

SIN

28h 18m

2 stops

1:25 am - 10:59 pm

SIN

DCA

33h 34m

2 stops

$1,058Cathay Pacific

Wed, Mar 4 - Tue, Mar 10

3:10 pm - 8:00 am

DCA

SIN

27h 50m

2 stops

10:10 am - 9:39 pm

SIN

DCA

24h 29m

1 stop

$1,127United Airlines

Tue, Feb 17 - Wed, Feb 25

5:00 am - 12:50 am

BWI

SIN

30h 50m

2 stops

1:55 am - 5:56 pm

SIN

BWI

28h 01m

2 stops

$1,131American Airlines

Wed, Feb 18 - Tue, Sep 15

8:31 am - 7:00 am

BWI

SIN

34h 29m

1 stop

10:10 am - 7:19 am

SIN

BWI

33h 09m

1 stop

$1,207United Airlines

Thu, Mar 19 - Thu, Mar 26

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

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

Korean Air

Feb 16

IAD11:50 amWashington, D.C. Dulles Intl

28h 10m

1 stop

SIN5:00 amSingapore Changi

Jun 11

SIN1:10 amSingapore Changi

30h 06m

2 stops

IAD7:16 pmWashington, D.C. Dulles Intl

$1,191

Korean Air

Mar 22

DCA8:40 amWashington, D.C. Reagan-National

27h 30m

2 stops

SIN12:10 amSingapore Changi

Mar 26

SIN10:30 pmSingapore Changi

30h 30m

2 stops

DCA5:00 pmWashington, D.C. Reagan-National

$1,346

Korean Air

Feb 22

DCA5:00 pmWashington, D.C. Reagan-National

47h 00m

2 stops

SIN5:00 amSingapore Changi

Jun 9

SIN10:30 pmSingapore Changi

31h 41m

2 stops

DCA6:11 pmWashington, D.C. Reagan-National

$1,354

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

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

EVA Air

Feb 6

DCA5:59 pmWashington, D.C. Reagan-National

37h 16m

1 stop

SIN8:15 pmSingapore Changi

Feb 12

SIN10:10 amSingapore Changi

24h 26m

1 stop

DCA9:36 pmWashington, D.C. Reagan-National

$1,239

EVA Air

Feb 18

BWI6:46 pmBaltimore/Washington

28h 19m

2 stops

SIN12:05 pmSingapore Changi

Sep 16

SIN3:20 pmSingapore Changi

27h 01m

2 stops

BWI6:21 amBaltimore/Washington

$1,370

EVA Air

Apr 12

BWI7:11 pmBaltimore/Washington

28h 44m

2 stops

SIN11:55 amSingapore Changi

May 5

SIN3:20 pmSingapore Changi

38h 56m

2 stops

BWI6:16 pmBaltimore/Washington

$1,400

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

Wed 3/18

3:35 pm-9:35 am

1 stop30h 00m

Singapore Changi

Wed 3/25

7:25 pm-10:05 am

1 stop26h 40m

$847

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 3/2

2:35 pm-9:35 am

1 stop30h 00m

Singapore Changi

Mon 3/9

7:25 pm-10:05 am

1 stop26h 40m

$848

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 3/2

2:35 pm-9:35 am

1 stop30h 00m

Singapore Changi

Mon 3/9

7:25 pm-10:05 am

1 stop26h 40m

$850

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 3/1

9:15 pm-8:35 am

1 stop22h 20m

Singapore Changi

Thu 3/5

10:15 am-7:20 pm

1 stop46h 05m

$882

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 2/17

1:30 pm-8:35 am

1 stop30h 05m

Singapore Changi

Wed 3/4

11:40 am-11:45 am

1 stop37h 05m

$883

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sun 4/12

6:59 pm-12:25 pm

2 stops29h 26m

Singapore Changi

Tue 5/5

8:05 pm-10:59 pm

2 stops38h 54m

$1,033

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Wed 3/4

6:37 pm-11:55 am

2 stops28h 18m

Singapore Changi

Tue 3/10

1:25 am-10:59 pm

2 stops33h 34m

$1,058

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 2/17

3:10 pm-8:00 am

2 stops27h 50m

Singapore Changi

Wed 2/25

10:10 am-9:39 pm

1 stop24h 29m

$1,127

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Wed 2/18

5:00 am-12:50 am

2 stops30h 50m

Singapore Changi

Tue 9/15

1:55 am-5:56 pm

2 stops28h 01m

$1,131

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Thu 3/19

8:31 am-7:00 am

1 stop34h 29m

Singapore Changi

Thu 3/26

10:10 am-7:19 am

1 stop33h 09m

$1,207

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 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 $723. 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 $1,251 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 $1,076 on momondo.

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

You could potentially save up to 3% 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 15% 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 00m
Direct flights	None

The fastest flight from Washington, D.C. to Singapore takes 23h 00m

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 00m.
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 United Airlines, representing 20% of all bookings. The subsequent popular airlines are Turkish Airlines at 20%, JetBlue 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 1,188 reviews	Search Korean Air flights
Air India	PriceFrom $807	Free Cancellation	Rating 5.5 2,974 reviews	Search Air India flights
Etihad Airways	PriceFrom $833	Free Cancellation	Rating 7.3 1,380 reviews	Search Etihad Airways flights
Turkish Airlines	PriceFrom $895	Free Cancellation	Rating 7.3 4,210 reviews	Search Turkish Airlines flights
Qatar Airways	PriceFrom $1,021	Free Cancellation	Rating 7.4 3,729 reviews	Search Qatar Airways flights
JetBlue	PriceFrom $1,066	Free Cancellation	Rating 7.2 2,893 reviews	Search JetBlue flights
ANA	PriceFrom $1,161	Free Cancellation	Rating 8.4 1,084 reviews	Search ANA flights
United Airlines	PriceFrom $1,174	Free Cancellation	Rating 7.4 9,236 reviews	Search United Airlines flights
American Airlines	PriceFrom $1,196	Free Cancellation	Rating 7.2 11,217 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 $402

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 3/2. 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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Korean Air flights from Washington, D.C. to Singapore

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

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

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

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Singapore that are best for you.

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?

You could potentially save up to 3% 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 15% cheaper when compared to flights at the same time last year.

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

IndiGo and Cathay Pacific are the most popular carriers operating 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?

Istanbul (IST) was the most common stop: 40% 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 Beijing (PEK) offer the lowest average round-trip price of $779.

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.

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.

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

How far is Washington, D.C. to Singapore Changi by plane?

When did momondo last update prices for flights from Washington, D.C. to Singapore Changi Airport?

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?

What documentation or ID do you need to fly to Singapore Changi Airport?

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

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