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 Air India ($423), SAUDIA ($497), and Turkish Airlines ($510).

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. Reagan-National - Singapore Changi. You may also consider Washington, D.C. Dulles Intl - 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 6% 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 $957 1-2 weeks out and tickets from $957 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 $1,283. You can even find prices in November for less than $1,283, as users have found deals to Singapore from as low as $816. 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.

$1,168+ Flights from Washington, D.C. to Singapore

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$1,003 (Gurufare)
One-way from	$423 (oojo)
Popular in	December
Cheapest in	November
Average price	$1,052

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

Search Deals

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. 2% potential increase in price ($28 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($48 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 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 April 17, 2025.

Tue 4/2211:00 pmIAD - SIN

1 stop34h 55mMultiple Airlines

Wed 4/303:45 amSIN - IAD

1 stop24h 00mMultiple Airlines

Deal found 4/16

$1,003

Sat 8/99:40 pmIAD - SIN

1 stop32h 15mTurkish Airlines

Sun 8/2410:15 amSIN - IAD

1 stop37h 30mTurkish Airlines

Deal found 4/17

$1,028

Wed 5/2110:19 pmIAD - SIN

2 stops44h 46mAir Canada

Sun 6/89:10 amSIN - IAD

2 stops36h 31mAir Canada

Deal found 4/17

$1,037

Mon 4/2811:54 amDCA - SIN

2 stops29h 36mCathay Pacific

Sun 5/111:50 amSIN - DCA

2 stops32h 25mCathay Pacific

Deal found 4/17

$1,052

Mon 4/219:00 pmIAD - SIN

1 stop36h 00mJetBlue

Tue 5/66:45 pmSIN - IAD

1 stop25h 55mJetBlue

Deal found 4/16

$1,066

Sat 5/311:00 amIAD - SIN

1 stop22h 45mAir India

Sat 5/109:00 amSIN - IAD

1 stop34h 40mAir India

Deal found 4/16

$1,068

Sat 5/314:35 pmDCA - SIN

2 stops50h 30mAir Canada

Sat 6/79:10 amSIN - DCA

2 stops37h 09mAir Canada

Deal found 4/16

$1,088

Mon 4/289:00 pmIAD - SIN

2 stops27h 55mQatar Airways

Mon 5/126:45 pmSIN - IAD

1 stop25h 55mQatar Airways

Deal found 4/17

$1,096

Thu 9/188:07 pmIAD - SIN

1 stop35h 03mSingapore Airlines

Mon 9/299:25 amSIN - IAD

2 stops42h 34mSingapore Airlines

Deal found 4/16

$1,097

Sat 8/165:35 pmIAD - SIN

2 stops30h 10mCathay Pacific

Fri 8/298:05 pmSIN - IAD

2 stops50h 40mCathay Pacific

Deal found 4/16

$1,161

Wed 5/79:40 pmIAD - SIN

2 stops29h 10mEthiopian Air

Fri 5/232:00 amSIN - IAD

2 stops30h 05mEthiopian Air

Deal found 4/17

$1,185

Mon 4/286:34 pmBWI - SIN

1 stop24h 11mUnited Airlines

Mon 5/128:40 pmSIN - BWI

1 stop22h 37mUnited Airlines

Deal found 4/17

$1,193

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 April 17, 2025.

Tue 4/2211:00 pmIAD - SIN

1 stop34h 55mMultiple Airlines

Wed 4/303:45 amSIN - IAD

1 stop24h 00mMultiple Airlines

Deal found 4/16

$1,003

Thu 5/89:40 pmIAD - SIN

1 stop32h 15mTurkish Airlines

Mon 5/1211:10 pmSIN - IAD

1 stop32h 35mTurkish Airlines

Deal found 4/17

$1,029

Wed 5/2110:19 pmIAD - SIN

2 stops44h 46mAir Canada

Sun 6/89:10 amSIN - IAD

2 stops36h 31mAir Canada

Deal found 4/17

$1,037

Mon 4/2811:54 amDCA - SIN

2 stops29h 36mCathay Pacific

Sun 5/111:50 amSIN - DCA

2 stops32h 25mCathay Pacific

Deal found 4/17

$1,052

Mon 4/219:00 pmIAD - SIN

1 stop36h 00mJetBlue

Tue 5/66:45 pmSIN - IAD

1 stop25h 55mJetBlue

Deal found 4/16

$1,066

Sat 5/311:00 amIAD - SIN

1 stop22h 45mAir India

Sat 5/109:00 amSIN - IAD

1 stop34h 40mAir India

Deal found 4/16

$1,068

Mon 4/289:00 pmIAD - SIN

2 stops27h 55mQatar Airways

Mon 5/126:45 pmSIN - IAD

1 stop25h 55mQatar Airways

Deal found 4/17

$1,096

Wed 5/79:40 pmIAD - SIN

2 stops29h 10mEthiopian Air

Fri 5/232:00 amSIN - IAD

2 stops30h 05mEthiopian Air

Deal found 4/17

$1,185

Mon 4/286:34 pmBWI - SIN

1 stop24h 11mUnited Airlines

Mon 5/128:40 pmSIN - BWI

1 stop22h 37mUnited Airlines

Deal found 4/17

$1,193

Thu 9/189:00 amDCA - SIN

2 stops27h 20mAmerican Airlines

Sun 9/281:55 amSIN - DCA

2 stops26h 04mAmerican Airlines

Deal found 4/16

$1,217

Tue 5/67:25 amIAD - SIN

2 stops33h 35mDelta

Thu 5/151:10 amSIN - IAD

2 stops35h 18mDelta

Deal found 4/15

$1,257

Mon 9/85:06 pmDCA - SIN

2 stops31h 29mChina Airlines

Fri 9/121:45 pmSIN - DCA

2 stops43h 14mChina Airlines

Deal found 4/16

$1,266

Last-minute flights from Washington, D.C. to Singapore
Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated April 17, 2025 and is based on user searches.

Mon 4/219:00 pmIAD - SIN

1 stop36h 00mJetBlue

Tue 5/66:45 pmSIN - IAD

1 stop25h 55mJetBlue

Deal found 4/16

$1,066

Mon 4/216:05 pmIAD - SIN

1 stop24h 40mUnited Airlines

Wed 4/238:40 pmSIN - IAD

1 stop30h 10mUnited Airlines

Deal found 4/17

$1,193

Tue 4/2211:00 pmIAD - SIN

1 stop34h 55mMultiple Airlines

Wed 4/303:45 amSIN - IAD

1 stop24h 00mMultiple Airlines

Deal found 4/16

$1,003

Tue 4/2211:00 amIAD - SIN

1 stop32h 30mAir India

Tue 4/299:00 amSIN - IAD

1 stop34h 40mAir India

Deal found 4/16

$1,082

Tue 4/229:00 pmIAD - SIN

2 stops30h 35mQatar Airways

Thu 5/110:30 amSIN - IAD

1 stop41h 10mQatar Airways

Deal found 4/17

$1,122

Tue 4/224:00 pmIAD - SIN

1 stop26h 45mUnited Airlines

Sun 4/2711:05 amSIN - IAD

1 stop40h 35mUnited Airlines

Deal found 4/16

$1,194

Tue 4/229:00 pmIAD - SIN

2 stops27h 55mMalaysia Airlines

Mon 4/289:15 pmSIN - IAD

2 stops30h 25mMalaysia Airlines

Deal found 4/16

$1,311

Tue 4/228:28 amBWI - SIN

2 stops34h 17mUnited Airlines

Thu 5/18:40 pmSIN - BWI

1 stop22h 37mUnited Airlines

Deal found 4/17

$1,598

Tue 4/227:06 amBWI - SIN

2 stops53h 29mMultiple Airlines

Wed 4/302:00 amSIN - BWI

2 stops39h 46mMultiple Airlines

Deal found 4/17

$1,790

Tue 4/2212:00 pmIAD - SIN

2 stops57h 40mEgyptair

Sun 4/279:10 pmSIN - IAD

2 stops44h 00mEgyptair

Deal found 4/16

$2,238

Wed 4/231:15 pmIAD - SIN

1 stop27h 45mKorean Air

Sun 4/271:10 amSIN - IAD

1 stop22h 05mKorean Air

Deal found 4/17

$1,383

Wed 4/236:00 amIAD - SIN

2 stops35h 00mDelta

Sun 4/271:10 amSIN - IAD

2 stops41h 10mDelta

Deal found 4/17

$1,507

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 April 17, 2025.

Sat 5/311:00 amIAD - SIN

1 stop32h 30mAir India

Deal found 4/17

$423

Wed 5/286:45 pmIAD - SIN

3 stops40h 15mMultiple Airlines

Deal found 4/15

$486

Fri 5/166:50 pmIAD - SIN

2 stops56h 55mSAUDIA

Deal found 4/16

$497

Fri 5/161:30 pmIAD - SIN

1 stop31h 15mTurkish Airlines

Deal found 4/16

$510

Wed 4/3010:00 pmDCA - SIN

2 stops43h 30mCathay Pacific

Deal found 4/16

$537

Thu 8/149:40 amDCA - SIN

2 stops33h 25mAir Canada

Deal found 4/16

$549

Wed 5/217:17 amBWI - SIN

3 stops51h 43mMultiple Airlines

Deal found 4/15

$558

Wed 4/306:00 pmDCA - SIN

3 stops42h 50mMultiple Airlines

Deal found 4/16

$594

Mon 7/75:12 pmIAD - SIN

2 stops49h 53mAir Canada

Deal found 4/16

$653

Wed 4/306:34 pmBWI - SIN

1 stop24h 11mUnited Airlines

Deal found 4/16

$679

Tue 7/227:00 amDCA - SIN

1 stop23h 25mUnited Airlines

Deal found 4/16

$679

Sat 5/37:30 amBWI - SIN

2 stops40h 15mCathay Pacific

Deal found 4/17

$700

Cheapflights 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

Fri 5/2

1:30 pm-8:45 am

1 stop31h 15m

Singapore Changi

Wed 5/7

3:45 am-3:45 pm

1 stop24h 00m

$1,005

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 8/9

9:40 pm-5:55 pm

1 stop32h 15m

Singapore Changi

Sun 8/24

10:15 am-11:45 am

1 stop37h 30m

$1,028

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 5/21

10:19 pm-7:05 am

2 stops44h 46m

Singapore Changi

Sun 6/8

9:10 am-9:41 am

2 stops36h 31m

$1,037

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Mon 4/28

11:54 am-5:30 am

2 stops29h 36m

Singapore Changi

Sun 5/11

1:50 am-10:15 pm

2 stops32h 25m

$1,052

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 5/3

11:00 am-9:45 pm

1 stop22h 45m

Singapore Changi

Sat 5/10

9:00 am-7:40 am

1 stop34h 40m

$1,068

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

Sat 5/31

9:40 am-7:05 am

2 stops57h 25m

Singapore Changi

Sat 6/7

9:10 am-10:19 am

2 stops37h 09m

$1,088

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 4/28

9:00 pm-12:55 pm

2 stops27h 55m

Singapore Changi

Sun 5/11

3:10 am-3:40 pm

1 stop24h 30m

$1,096

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 9/18

8:07 pm-7:10 pm

1 stop35h 03m

Singapore Changi

Mon 9/29

9:25 am-3:59 pm

2 stops42h 34m

$1,097

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 10/3

11:00 am-9:00 pm

1 stop22h 00m

Singapore Changi

Sat 10/11

3:10 am-3:40 pm

1 stop24h 30m

$1,104

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 8/16

5:35 pm-11:45 am

2 stops30h 10m

Singapore Changi

Fri 8/29

8:05 pm-10:45 am

2 stops50h 40m

$1,161

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Singapore

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 EVA Air, Korean Air 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.

EVA Air

8.4

Very good

1,177 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

EVA Air

8.4

Very good

1,177 reviews

EVA Air

8.4

Very good

1,177 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Korean Air

8.4

Very good

1,064 reviews

EVA Air

8.4

Very good

1,177 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Japan Airlines

8.3

Very good

1,440 reviews

EVA Air

8.4

Very good

1,177 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

ANA

8.3

Very good

844 reviews

EVA Air

8.4

Very good

1,177 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

China Airlines

8.2

Very good

729 reviews

EVA Air

8.4

Very good

1,177 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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 Air India ($423), SAUDIA ($497), and Turkish Airlines ($510).
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. Reagan-National - Singapore Changi. You may also consider Washington, D.C. Dulles Intl - 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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Top 9 airlines flying from Washington, D.C. to Singapore

Airline	Cheapest	Average	Flexibility	On-time
Turkish Airlines	Cheapest$830	Average$994	FlexibilityNo cancel fee	On-time77%
United Airlines	Cheapest$904	Average$1,469	FlexibilityNo cancel fee	On-time69%
Qatar Airways	Cheapest$1,014	Average$1,287	FlexibilityNo cancel fee	On-time68%
Delta	Cheapest$1,015	Average$2,280	FlexibilityNo cancel fee	On-timeN/A
Korean Air	Cheapest$1,037	Average$1,346	FlexibilityNo cancel fee	On-time81%
JetBlue	Cheapest$1,043	Average$1,186	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$1,124	Average$1,490	FlexibilityNo cancel fee	On-time71%
Singapore Airlines	Cheapest$1,287	Average$1,780	FlexibilityNo cancel fee	On-time81%
ANA	Cheapest$1,581	Average$2,169	FlexibilityNo cancel fee	On-time80%

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$406+ 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 8/20. 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 April 17, 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 April 17, 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 April 17, 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Singapore

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 April 17, 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 EVA Air, Korean Air 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.

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Top 9 airlines flying 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 April 17, 2025.