What are the cheapest airlines to fly from Washington, D.C. to Singapore one-way?

The cheapest airlines for a one-way flight from Washington, D.C. to Singapore are IndiGo ($464), Qatar Airways ($467), and SAUDIA ($507).

What are the most popular routes from Washington, D.C. to Singapore?

The most popular route from Washington, D.C. to Singapore is Washington, D.C. Dulles Intl - Singapore Changi. You may also consider Washington, D.C. Reagan-National - Singapore Changi or Baltimore/Washington - Singapore Changi.

What are the most popular airlines that fly from Washington, D.C. to Singapore?

When booking a flight from Washington, D.C. to Singapore, you may want to consider flying on American Airlines, JetBlue or Delta as they are the most popular for this route.

How far in advance should I book a flight from Washington, D.C. to Singapore?

To save up to 50% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Washington, D.C. to Singapore from $1,060 1-2 weeks out and tickets from $1,359 for flights departing within the next 72 hours.

What is the cheapest month to fly from Washington, D.C. to Singapore?

The best pricing can be found in the month of November. Prices to Singapore from Washington, D.C. average $1,294. You can even find prices in November for less than $1,294, as users have found deals to Singapore from as low as $815. The month of December appears to be one of the more expensive times to travel to Singapore from Washington, D.C.. Flying in the targeted month can save you up to 41%.

Can I find deals for flights from Washington, D.C. to Singapore that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to Singapore?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Singapore.

Can I find deals for business class flights from Washington, D.C. to Singapore?

Yes. Cheapflights offers flight deals from Washington, D.C. to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$1,176+ Save on Flights from Washington, D.C. to Singapore

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Cheap flight deals from Washington, D.C. to Singapore

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$900 (FlightHub)
One-way from	$435 (Trip.com)
Popular in	December
Cheapest in	November
Average price	$1,171

Provider with most accurate pricing for Washington, D.C. (WAS)-Singapore Changi flight deals.

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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Singapore Changi flights.

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From Washington, D.C. (WAS) to Singapore

Search Deals

One-way flight from Washington, D.C. (WAS) to Singapore

Search Deals

Highest demand for flights based on searches. 1% potential increase in price ($24 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($49 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Find flight deals from Washington, D.C. to Singapore

Cheapest flights from Washington, D.C. to Singapore
Explore the most affordable flight options available from Washington, D.C. to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Thu 3/207:10 pmIAD - SIN

1 stop32h 20mSAUDIA

Wed 4/23:45 amSIN - IAD

1 stop24h 00mSAUDIA

Deal found 2/20

$891

Thu 3/69:30 pmIAD - SIN

1 stop23h 05mEtihad Airways

Sun 3/167:25 pmSIN - IAD

1 stop34h 00mEtihad Airways

Deal found 2/20

$900

Mon 4/149:40 pmIAD - SIN

1 stop22h 15mTurkish Airlines

Thu 4/249:10 amSIN - IAD

1 stop37h 35mTurkish Airlines

Deal found 2/20

$905

Tue 4/2910:05 pmIAD - SIN

2 stops25h 25mMultiple Airlines

Wed 5/149:10 pmSIN - IAD

1 stop31h 25mMultiple Airlines

Deal found 2/19

$934

Mon 3/38:05 pmIAD - SIN

1 stop23h 40mQatar Airways

Mon 3/175:25 pmSIN - IAD

2 stops35h 30mQatar Airways

Deal found 2/20

$994

Tue 4/112:30 pmIAD - SIN

2 stops40h 50mIndiGo

Tue 4/87:45 pmSIN - IAD

2 stops36h 00mIndiGo

Deal found 2/19

$1,013

Tue 4/16:00 amDCA - SIN

2 stops37h 05mAir Canada

Tue 4/89:10 amSIN - DCA

2 stops35h 43mAir Canada

Deal found 2/19

$1,067

Sun 2/238:05 pmIAD - SIN

1 stop29h 50mJetBlue

Tue 3/1110:15 amSIN - IAD

1 stop35h 05mJetBlue

Deal found 2/20

$1,067

Tue 4/812:40 pmIAD - SIN

2 stops30h 25mAir Canada

Tue 4/229:10 amSIN - IAD

2 stops34h 45mAir Canada

Deal found 2/20

$1,087

Tue 4/15:38 pmDCA - SIN

1 stop37h 32mMultiple Airlines

Tue 4/83:15 pmSIN - DCA

2 stops41h 44mMultiple Airlines

Deal found 2/19

$1,088

Tue 4/16:30 amBWI - SIN

2 stops34h 30mMultiple Airlines

Tue 4/83:15 pmSIN - BWI

2 stops34h 40mMultiple Airlines

Deal found 2/20

$1,112

Mon 2/2411:50 amIAD - SIN

1 stop28h 10mKorean Air

Mon 3/101:30 amSIN - IAD

1 stop21h 20mKorean Air

Deal found 2/20

$1,163

Best flights from Washington, D.C. to Singapore
Discover carefully curated flight deals from Washington, D.C. to Singapore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Thu 3/69:30 pmIAD - SIN

1 stop23h 05mEtihad Airways

Sun 3/167:25 pmSIN - IAD

1 stop34h 00mEtihad Airways

Deal found 2/20

$900

Mon 4/149:40 pmIAD - SIN

1 stop22h 15mTurkish Airlines

Thu 4/249:10 amSIN - IAD

1 stop37h 35mTurkish Airlines

Deal found 2/20

$905

Fri 3/147:10 pmIAD - SIN

2 stops56h 20mSAUDIA

Sat 3/225:00 pmSIN - IAD

1 stop34h 45mSAUDIA

Deal found 2/20

$916

Tue 4/2910:05 pmIAD - SIN

2 stops25h 25mMultiple Airlines

Wed 5/149:10 pmSIN - IAD

1 stop31h 25mMultiple Airlines

Deal found 2/19

$934

Mon 3/38:05 pmIAD - SIN

1 stop23h 40mQatar Airways

Mon 3/175:25 pmSIN - IAD

2 stops35h 30mQatar Airways

Deal found 2/20

$994

Tue 4/112:30 pmIAD - SIN

2 stops40h 50mIndiGo

Tue 4/87:45 pmSIN - IAD

2 stops36h 00mIndiGo

Deal found 2/20

$1,008

Tue 4/19:00 pmIAD - SIN

1 stop24h 00mJetBlue

Mon 4/73:10 amSIN - IAD

1 stop24h 30mJetBlue

Deal found 2/20

$1,066

Tue 4/16:00 amDCA - SIN

2 stops37h 05mAir Canada

Tue 4/89:10 amSIN - DCA

2 stops35h 43mAir Canada

Deal found 2/19

$1,067

Mon 2/2411:50 amIAD - SIN

1 stop28h 10mKorean Air

Mon 3/101:30 amSIN - IAD

1 stop21h 20mKorean Air

Deal found 2/20

$1,163

Wed 3/129:40 pmIAD - SIN

2 stops29h 10mEthiopian Air

Sun 3/162:00 amSIN - IAD

2 stops29h 50mEthiopian Air

Deal found 2/20

$1,168

Tue 4/295:59 pmDCA - SIN

1 stop24h 46mUnited Airlines

Wed 5/149:00 amSIN - DCA

1 stop24h 34mUnited Airlines

Deal found 2/19

$1,185

Fri 4/411:00 amIAD - SIN

1 stop22h 00mAlaska Airlines

Fri 4/113:10 amSIN - IAD

1 stop24h 30mAlaska Airlines

Deal found 2/20

$1,186

Last-minute flights from Washington, D.C. to Singapore
Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated February 20, 2025 and is based on user searches.

Sun 2/238:05 pmIAD - SIN

1 stop29h 50mJetBlue

Tue 3/1110:15 amSIN - IAD

1 stop35h 05mJetBlue

Deal found 2/20

$1,067

Mon 2/2411:50 amIAD - SIN

1 stop28h 10mKorean Air

Mon 3/101:30 amSIN - IAD

1 stop21h 20mKorean Air

Deal found 2/20

$1,163

Wed 2/266:59 amDCA - SIN

2 stops33h 26mMultiple Airlines

Sun 3/96:30 pmSIN - DCA

2 stops37h 27mMultiple Airlines

Deal found 2/19

$5,132

Thu 2/272:00 pmIAD - SIN

1 stop38h 35mTurkish Airlines

Sat 3/811:25 pmSIN - IAD

1 stop33h 05mTurkish Airlines

Deal found 2/19

$956

Thu 2/278:05 pmIAD - SIN

1 stop23h 40mQatar Airways

Sun 3/163:15 amSIN - IAD

1 stop25h 40mQatar Airways

Deal found 2/20

$1,019

Thu 2/278:05 pmIAD - SIN

1 stop29h 50mMultiple Airlines

Mon 3/177:40 pmSIN - IAD

2 stops36h 50mMultiple Airlines

Deal found 2/20

$1,070

Thu 2/273:55 pmDCA - SIN

2 stops34h 00mQatar Airways

Sun 3/163:15 amSIN - DCA

2 stops27h 35mQatar Airways

Deal found 2/20

$1,283

Thu 2/2711:47 amBWI - SIN

2 stops28h 53mCathay Pacific

Mon 3/172:05 pmSIN - BWI

3 stops43h 41mCathay Pacific

Deal found 2/20

$1,551

Thu 2/279:00 amDCA - SIN

1 stop33h 55mSingapore Airlines

Mon 3/178:45 pmSIN - DCA

1 stop36h 14mSingapore Airlines

Deal found 2/20

$1,952

Thu 2/276:00 pmBWI - SIN

1 stop46h 30mSingapore Airlines

Mon 3/179:20 amSIN - BWI

2 stops32h 09mSingapore Airlines

Deal found 2/20

$2,312

Thu 2/272:35 pmIAD - SIN

2 stops28h 20mAir Canada

Mon 3/106:35 amSIN - IAD

2 stops26h 48mAir Canada

Deal found 2/20

$5,708

Thu 2/2711:10 amDCA - SIN

2 stops31h 45mAir Canada

Sun 3/91:55 amSIN - DCA

2 stops32h 42mAir Canada

Deal found 2/20

$6,425

One-way flights from Washington, D.C. to Singapore
Search for one-way flight options from Washington, D.C. to Singapore. Find affordable one-way fares based on user searches. Data last updated February 20, 2025.

Wed 3/59:30 pmIAD - SIN

2 stops43h 45mMultiple Airlines

Deal found 2/20

$435

Wed 3/59:25 pmIAD - SIN

2 stops30h 55mIndiGo

Deal found 2/19

$464

Thu 2/278:05 pmIAD - SIN

1 stop29h 50mQatar Airways

Deal found 2/19

$467

Mon 3/247:10 pmBWI - SIN

3 stops48h 45mMultiple Airlines

Deal found 2/20

$503

Sat 3/86:10 pmIAD - SIN

1 stop32h 20mSAUDIA

Deal found 2/19

$507

Tue 2/259:30 pmIAD - SIN

1 stop23h 05mEtihad Airways

Deal found 2/20

$524

Fri 4/46:00 pmDCA - SIN

2 stops59h 35mMultiple Airlines

Deal found 2/19

$535

Thu 2/2712:29 pmDCA - SIN

2 stops37h 26mQatar Airways

Deal found 2/19

$618

Wed 3/269:40 amDCA - SIN

2 stops34h 15mAir Canada

Deal found 2/20

$620

Mon 3/109:05 pmIAD - SIN

1 stop29h 50mAmerican Airlines

Deal found 2/20

$652

Thu 2/276:15 amBWI - SIN

1 stop25h 00mUnited Airlines

Deal found 2/20

$672

Tue 2/255:59 pmDCA - SIN

1 stop25h 01mUnited Airlines

Deal found 2/20

$672

Find flights from Washington, D.C. to Singapore within your budget

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 3/20

7:10 pm-3:30 pm

1 stop32h 20m

Singapore Changi

Wed 4/2

3:45 am-3:45 pm

1 stop24h 00m

$891

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 3/6

9:30 pm-9:35 am

1 stop23h 05m

Singapore Changi

Sun 3/16

7:25 pm-5:25 pm

1 stop34h 00m

$900

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 4/14

9:40 pm-7:55 am

1 stop22h 15m

Singapore Changi

Thu 4/24

9:10 am-10:45 am

1 stop37h 35m

$905

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 4/29

10:05 pm-11:30 am

2 stops25h 25m

Singapore Changi

Wed 5/14

9:10 pm-4:35 pm

1 stop31h 25m

$934

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 3/3

8:05 pm-8:45 am

1 stop23h 40m

Singapore Changi

Mon 3/17

5:25 pm-4:55 pm

2 stops35h 30m

$994

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 4/1

12:30 pm-5:20 pm

2 stops40h 50m

Singapore Changi

Tue 4/8

7:45 pm-7:45 pm

2 stops36h 00m

$1,013

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 4/1

6:00 am-7:05 am

2 stops37h 05m

Singapore Changi

Tue 4/8

9:10 am-8:53 am

2 stops35h 43m

$1,067

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 4/1

1:53 pm-7:05 am

2 stops29h 12m

Singapore Changi

Tue 4/8

9:10 am-7:55 am

2 stops34h 45m

$1,067

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Tue 4/1

5:38 pm-7:10 pm

1 stop37h 32m

Singapore Changi

Tue 4/8

3:15 pm-8:59 pm

2 stops41h 44m

$1,088

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Tue 4/1

6:30 am-5:00 am

2 stops34h 30m

Singapore Changi

Tue 4/8

3:15 pm-1:55 pm

2 stops34h 40m

$1,112

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 60 results

...

Best time to book a flight from Washington, D.C. to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Washington, D.C. with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Washington, D.C. to Singapore

Get recent, data-driven insights about flights from Washington, D.C. to Singapore including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Washington, D.C. to Singapore?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Singapore (average of $1,011). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of $1,684). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WAS to SG?

When flying from Washington, D.C. to Singapore, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Singapore by month

In terms of precipitation, rainfall in Singapore ranges from 5.9 - 10.6 inches per month. December is typically the wettest month, when rainfall can reach 10.6 in. July is typically the driest time to visit Singapore when rainfall is around 5.9 in.

Temperature in Singapore by month

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 78.8 F).

Reviews of airlines servicing Singapore

See what other customers who have flown with Korean Air, ANA and Japan Airlines from Washington, D.C. to Singapore have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very good

1,037 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Korean Air

8.4

Very good

1,037 reviews

Korean Air

8.4

Very good

1,037 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

ATL - SBN

ANA

8.4

Very good

842 reviews

Korean Air

8.4

Very good

1,037 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

ATL - SBN

Japan Airlines

8.3

Very good

1,440 reviews

Korean Air

8.4

Very good

1,037 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

ATL - SBN

Singapore Airlines

8.1

Very good

1,299 reviews

Korean Air

8.4

Very good

1,037 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

ATL - SBN

Delta

8.0

Very good

8,220 reviews

Korean Air

8.4

Very good

1,037 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

ATL - SBN

Related info for your journey

What are the cheapest airlines to fly from Washington, D.C. to Singapore one-way?
The cheapest airlines for a one-way flight from Washington, D.C. to Singapore are IndiGo ($464), Qatar Airways ($467), and SAUDIA ($507).
What are the most popular routes from Washington, D.C. to Singapore?
The most popular route from Washington, D.C. to Singapore is Washington, D.C. Dulles Intl - Singapore Changi. You may also consider Washington, D.C. Reagan-National - Singapore Changi or Baltimore/Washington - Singapore Changi.
Can I find deals for flights from Washington, D.C. to Singapore that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Singapore?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Singapore.
Can I find deals for business class flights from Washington, D.C. to Singapore?
Yes. Cheapflights offers flight deals from Washington, D.C. to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. to Singapore?
Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Singapore (average of $1,011). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of $1,684). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Washington, D.C. to Singapore

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Dulles Intl to Karachi flights

Top 8 airlines flying from Washington, D.C. to Singapore

Airline	Cheapest	Average	Flexibility	On-time
Turkish Airlines	Cheapest$832	Average$1,012	FlexibilityNo cancel fee	On-time77%
United Airlines	Cheapest$904	Average$1,609	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$1,009	Average$1,470	FlexibilityNo cancel fee	On-timeN/A
Qatar Airways	Cheapest$1,014	Average$1,290	FlexibilityNo cancel fee	On-time68%
JetBlue	Cheapest$1,028	Average$1,192	FlexibilityNo cancel fee	On-time62%
Korean Air	Cheapest$1,037	Average$1,276	FlexibilityNo cancel fee	On-time81%
American Airlines	Cheapest$1,124	Average$1,349	FlexibilityNo cancel fee	On-time71%
Singapore Airlines	Cheapest$1,226	Average$1,640	FlexibilityNo cancel fee	On-time81%

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$435+ Cheap flights from Washington, D.C. (WAS) to Singapore

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Singapore with Cheapflights

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Cheap flight deals from Washington, D.C. to Singapore

Keep the following information in mind while searching for Washington, D.C. to Singapore flight deals. Data was last updated February 20, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Washington, D.C. to Singapore

Cheapest flights from Washington, D.C. to SingaporeExplore the most affordable flight options available from Washington, D.C. to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Explore the most affordable flight options available from Washington, D.C. to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Find flights from Washington, D.C. to Singapore within your budget

Best time to book a flight from Washington, D.C. to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Washington, D.C. with our price prediction graph.

Travel insights for flights from Washington, D.C. to Singapore

Get recent, data-driven insights about flights from Washington, D.C. to Singapore including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Washington, D.C. to Singapore?

What is the cheapest time of day to fly from WAS to SG?

Find hourly flight availability from Washington, D.C. to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Rainfall in Singapore by month

Plan your trip to Singapore by taking into account the average rainfall totals by month.

Temperature in Singapore by month

Plan your trip to Singapore by taking into account the average temperature totals by month.

Reviews of airlines servicing Singapore

See what other customers who have flown with Korean Air, ANA and Japan Airlines from Washington, D.C. to Singapore have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from Washington, D.C. to Singapore one-way?

What are the most popular routes from Washington, D.C. to Singapore?

Can I find deals for flights from Washington, D.C. to Singapore that include hotel bookings?

How can I find direct flights from Washington, D.C. to Singapore?

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Cheapest flights from Washington, D.C. to Singapore
Explore the most affordable flight options available from Washington, D.C. to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.