What are the cheapest airlines flying from Washington, D.C. to Singapore round-trip?

According to our current data, Air Canada ($1,086), Korean Air ($1,093), and Turkish Airlines ($1,095) offers the cheapest pricing from Washington, D.C. to Singapore. Users have found that Air Canada is 11% cheaper than the other options available to this destination.

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 ($420), Air India ($423), and Turkish Airlines ($445).

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.

Where are the most common layover locations when flying from Washington, D.C. to Singapore?

Flights departing from Washington, D.C. and landing in Singapore layover in Istanbul most frequently.

Where are the least popular layover locations for Washington, D.C. to Singapore flights?

Washington, D.C. to Singapore flights have a layover in Doha the least frequently.

What are some popular things to do or see while on a layover in Istanbul?

Istanbul travelers tend to visit Taksim Square, Sultan Ahmet Camii, and Beyazit Meydani more than anywhere else. Taksim Square, Sultan Ahmet Camii, and Beyazit Meydani can be accessed by traveling approximately 20.8 mi, 22.3 mi, and 21.7 mi, respectively from Istanbul. Travelers in need of a car in Istanbul can rent one for about $40 per day.

What is the cheapest day to fly round-trip from Washington, D.C. to Singapore?

Users have found that flying from Washington, D.C. to Singapore on a Friday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

To save on the cost of your flight from Washington, D.C. to Singapore, book at least 61 days before your planned departure. Booking around this time can save you about 16% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $957 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $957.

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

October can be a great time to fly to Singapore from Washington, D.C. with a flight ticket averaging about $1,231. Cheapflights users have found deals in the month of October for as cheap as $653. The most expensive prices can be found in the month of December.

What airport do you fly into for flights to Singapore from Washington, D.C.?

For a flight from Washington, D.C. to Singapore, you will be flying into Changi. Singapore Changi (SIN) is just 10.5 mi from the center of the city. Changi is the only Singapore airport and it handles 0 inbound flights from Washington, D.C. per day. 10 airlines have flights to Singapore Changi from Washington, D.C. on a regular basis.

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.

$420+ Flights from Washington, D.C. to Singapore

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Cheapflights Tip: The best prices from Washington, D.C. to Singapore Changi are usually found in October or November, booked 60 days in advance, depart on a Wednesday or Monday and return on a Tuesday

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

Round-trip from	$1,007 (Kissandfly.com)
One-way from	$420 (Booking.com)
Popular in	December
Cheapest in	October
Average price	$1,422

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($73 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($53 potential savings vs. average RT price).

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Average for round-trip flights in June 2025

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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 junio 12, 2025.

lun. 9/81:37 pmBWI - SIN

2 stops51h 23mMultiple Airlines

mié. 9/171:10 amSIN - BWI

2 stops31h 52mMultiple Airlines

Deal found 6/9

$1,007

mié. 7/165:12 pmIAD - SIN

2 stops49h 53mAir Canada

mar. 7/229:10 amSIN - IAD

2 stops36h 27mAir Canada

Deal found 6/10

$1,086

lun. 9/18:35 amDCA - SIN

2 stops27h 05mKorean Air

mar. 9/91:10 amSIN - DCA

2 stops32h 37mKorean Air

Deal found 6/11

$1,093

mié. 7/91:30 pmIAD - SIN

1 stop31h 15mTurkish Airlines

mar. 10/75:10 amSIN - IAD

1 stop26h 35mTurkish Airlines

Deal found 6/11

$1,095

lun. 9/86:00 amIAD - SIN

2 stops29h 40mKorean Air

mié. 9/171:10 amSIN - IAD

2 stops32h 03mKorean Air

Deal found 6/12

$1,096

dom. 12/1411:00 amIAD - SIN

1 stop31h 00mAir India

lun. 12/228:20 amSIN - IAD

1 stop35h 30mAir India

Deal found 6/12

$1,100

jue. 11/138:05 pmIAD - SIN

1 stop29h 50mQatar Airways

mar. 11/185:25 pmSIN - IAD

2 stops27h 55mQatar Airways

Deal found 6/12

$1,102

mié. 7/161:30 pmIAD - SIN

1 stop40h 25mMultiple Airlines

mar. 7/227:45 pmSIN - IAD

2 stops36h 00mMultiple Airlines

Deal found 6/10

$1,103

sáb. 7/124:30 pmDCA - SIN

2 stops50h 35mAir Canada

sáb. 7/199:10 amSIN - DCA

2 stops37h 08mAir Canada

Deal found 6/9

$1,113

lun. 9/86:55 pmBWI - SIN

1 stop24h 55mSingapore Airlines

jue. 9/188:45 pmSIN - BWI

1 stop32h 22mSingapore Airlines

Deal found 6/12

$1,123

jue. 7/109:40 pmIAD - SIN

2 stops32h 05mIndiGo

jue. 7/177:45 pmSIN - IAD

2 stops36h 00mIndiGo

Deal found 6/10

$1,135

lun. 9/88:59 amDCA - SIN

1 stop34h 51mSingapore Airlines

jue. 9/188:45 pmSIN - DCA

1 stop36h 14mSingapore Airlines

Deal found 6/10

$1,201

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 junio 12, 2025.

lun. 9/81:37 pmBWI - SIN

2 stops51h 23mMultiple Airlines

mié. 9/171:10 amSIN - BWI

2 stops31h 52mMultiple Airlines

Deal found 6/9

$1,007

mié. 7/165:12 pmIAD - SIN

2 stops49h 53mAir Canada

mar. 7/229:10 amSIN - IAD

2 stops36h 27mAir Canada

Deal found 6/10

$1,086

lun. 9/18:35 amDCA - SIN

2 stops27h 05mKorean Air

mar. 9/91:10 amSIN - DCA

2 stops32h 37mKorean Air

Deal found 6/11

$1,093

mié. 7/91:30 pmIAD - SIN

1 stop31h 15mTurkish Airlines

mar. 10/75:10 amSIN - IAD

1 stop26h 35mTurkish Airlines

Deal found 6/11

$1,095

jue. 11/138:05 pmIAD - SIN

1 stop29h 50mQatar Airways

mar. 11/185:25 pmSIN - IAD

2 stops27h 55mQatar Airways

Deal found 6/12

$1,102

dom. 7/2012:50 pmIAD - SIN

1 stop30h 25mAir India

lun. 8/48:45 amSIN - IAD

1 stop38h 30mAir India

Deal found 6/12

$1,116

lun. 9/86:55 pmBWI - SIN

1 stop24h 55mSingapore Airlines

jue. 9/188:45 pmSIN - BWI

1 stop32h 22mSingapore Airlines

Deal found 6/12

$1,123

jue. 7/109:40 pmIAD - SIN

2 stops32h 05mIndiGo

jue. 7/177:45 pmSIN - IAD

2 stops36h 00mIndiGo

Deal found 6/10

$1,135

lun. 9/16:15 amBWI - SIN

2 stops34h 45mDelta

mié. 9/107:30 amSIN - BWI

2 stops28h 51mDelta

Deal found 6/10

$1,204

lun. 9/17:00 pmBWI - SIN

1 stop23h 15mUnited Airlines

mié. 9/108:45 amSIN - BWI

2 stops26h 00mUnited Airlines

Deal found 6/10

$1,225

mié. 7/303:30 pmDCA - SIN

2 stops27h 10mANA

mié. 8/66:15 amSIN - DCA

2 stops26h 47mANA

Deal found 6/11

$1,229

jue. 11/2010:00 amIAD - SIN

1 stop39h 50mEthiopian Air

dom. 11/302:00 amSIN - IAD

2 stops30h 05mEthiopian Air

Deal found 6/11

$1,240

Last-minute flights from Washington, D.C. to Singapore
Discover last-minute flight deals from Washington, D.C. to Singapore. Data last updated junio 12, 2025 and is based on user searches.

mar. 6/176:51 amBWI - SIN

1 stop23h 34mUnited Airlines

mié. 7/28:40 pmSIN - BWI

1 stop23h 03mUnited Airlines

Deal found 6/10

$1,621

mar. 6/177:00 amDCA - SIN

1 stop23h 25mUnited Airlines

mié. 7/28:45 amSIN - DCA

1 stop24h 42mUnited Airlines

Deal found 6/10

$1,833

mié. 6/189:00 pmIAD - SIN

1 stop36h 00mQatar Airways

mié. 7/26:45 pmSIN - IAD

1 stop25h 55mQatar Airways

Deal found 6/11

$1,270

mié. 6/1810:55 amIAD - SIN

1 stop39h 55mEthiopian Air

mar. 7/12:00 amSIN - IAD

2 stops30h 05mEthiopian Air

Deal found 6/11

$1,490

mié. 6/181:45 pmDCA - SIN

2 stops38h 00mQatar Airways

mar. 7/13:10 amSIN - DCA

2 stops28h 48mQatar Airways

Deal found 6/11

$1,530

mié. 6/186:30 amIAD - SIN

1 stop23h 55mUnited Airlines

vie. 7/48:45 amSIN - IAD

1 stop24h 36mUnited Airlines

Deal found 6/10

$1,883

vie. 6/2012:50 pmIAD - SIN

1 stop30h 25mAir India

vie. 6/278:45 amSIN - IAD

2 stops38h 30mAir India

Deal found 6/10

$1,695

vie. 6/205:25 pmIAD - SIN

1 stop34h 05mKLM

jue. 6/2612:40 amSIN - IAD

1 stop26h 55mKLM

Deal found 6/10

$1,802

vie. 6/2010:05 pmIAD - SIN

1 stop23h 35mEtihad Airways

vie. 6/279:10 pmSIN - IAD

1 stop31h 00mEtihad Airways

Deal found 6/10

$1,807

vie. 6/208:19 pmIAD - SIN

2 stops27h 41mMultiple Airlines

vie. 6/273:10 pmSIN - IAD

2 stops28h 09mMultiple Airlines

Deal found 6/10

$2,012

sáb. 6/217:33 pmDCA - SIN

2 stops28h 12mCathay Pacific

mié. 7/29:45 amSIN - DCA

2 stops34h 05mCathay Pacific

Deal found 6/12

$1,655

sáb. 6/215:12 pmIAD - SIN

2 stops49h 53mAir Canada

mié. 7/26:15 amSIN - IAD

2 stops26h 46mAir Canada

Deal found 6/12

$1,707

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 junio 12, 2025.

mar. 9/21:30 pmIAD - SIN

2 stops39h 50mIndiGo

Deal found 6/11

$420

mié. 8/2712:50 pmIAD - SIN

1 stop30h 25mAir India

Deal found 6/10

$423

jue. 8/141:30 pmIAD - SIN

1 stop40h 25mTurkish Airlines

Deal found 6/9

$445

lun. 8/46:15 pmBWI - SIN

2 stops36h 55mMultiple Airlines

Deal found 6/10

$466

lun. 8/49:40 pmIAD - SIN

3 stops59h 05mMultiple Airlines

Deal found 6/10

$482

lun. 8/411:00 amIAD - SIN

1 stop22h 00mQatar Airways

Deal found 6/10

$533

lun. 8/44:51 pmDCA - SIN

2 stops42h 49mKorean Air

Deal found 6/10

$536

lun. 8/46:58 pmDCA - SIN

1 stop36h 12mMultiple Airlines

Deal found 6/10

$556

mar. 7/1511:00 amDCA - SIN

2 stops32h 05mAir Canada

Deal found 6/11

$628

mar. 10/712:35 pmIAD - SIN

2 stops30h 30mAir Canada

Deal found 6/11

$663

mar. 7/810:08 pmDCA - SIN

2 stops31h 22mJapan Airlines

Deal found 6/9

$695

lun. 8/47:00 pmBWI - SIN

1 stop23h 15mUnited Airlines

Deal found 6/10

$698

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

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

lun. 9/8

1:37 pm-5:00 am

2 stops51h 23m

Singapore Changi

mié. 9/17

1:10 am-9:02 pm

2 stops31h 52m

$1,007

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

mié. 7/16

5:12 pm-7:05 am

2 stops49h 53m

Singapore Changi

mar. 7/22

9:10 am-9:37 am

2 stops36h 27m

$1,086

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

lun. 9/1

8:35 am-11:40 pm

2 stops27h 05m

Singapore Changi

mar. 9/9

1:10 am-9:47 pm

2 stops32h 37m

$1,093

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

mié. 7/9

1:30 pm-8:45 am

1 stop31h 15m

Singapore Changi

mar. 10/7

5:10 am-7:45 pm

1 stop26h 35m

$1,095

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

lun. 9/8

6:00 am-11:40 pm

2 stops29h 40m

Singapore Changi

mié. 9/17

1:10 am-9:13 pm

2 stops32h 03m

$1,096

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

jue. 11/13

8:05 pm-2:55 pm

1 stop29h 50m

Singapore Changi

mar. 11/18

5:25 pm-8:20 am

2 stops27h 55m

$1,102

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

mié. 7/16

1:30 pm-5:55 pm

1 stop40h 25m

Singapore Changi

mar. 7/22

7:45 pm-7:45 pm

2 stops36h 00m

$1,103

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

sáb. 7/12

4:30 pm-7:05 am

2 stops50h 35m

Singapore Changi

sáb. 7/19

9:10 am-10:18 am

2 stops37h 08m

$1,113

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

dom. 7/20

12:50 pm-7:15 am

1 stop30h 25m

Singapore Changi

lun. 8/4

8:45 am-11:15 am

1 stop38h 30m

$1,116

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

lun. 9/8

6:55 pm-7:50 am

1 stop24h 55m

Singapore Changi

jue. 9/18

8:45 pm-5:07 pm

1 stop32h 22m

$1,123

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. to Singapore, you should look to book at least 60 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 SIN?

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Singapore at noon. If you’re flexible enough to do this you can expect to save up to 25% on your trip compared to booking a flight in the afternoon.

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

Travelers seeking maximum savings on their Washington, D.C. to Singapore flight should consider departing on Monday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

Read reviews from past customers who have flown EVA Air, Korean Air and Japan Airlines from Washington, D.C. to Singapore. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very good

1,202 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

EVA Air

8.4

Very good

1,202 reviews

EVA Air

8.4

Very good

1,202 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Korean Air

8.4

Very good

1,088 reviews

EVA Air

8.4

Very good

1,202 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Japan Airlines

8.3

Very good

1,489 reviews

EVA Air

8.4

Very good

1,202 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

ANA

8.3

Very good

882 reviews

EVA Air

8.4

Very good

1,202 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Singapore Airlines

8.1

Very good

1,302 reviews

EVA Air

8.4

Very good

1,202 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

What airport do you fly into for flights to Singapore from Washington, D.C.?
For a flight from Washington, D.C. to Singapore, you will be flying into Changi. Singapore Changi (SIN) is just 10.5 mi from the center of the city. Changi is the only Singapore airport and it handles 0 inbound flights from Washington, D.C. per day. 10 airlines have flights to Singapore Changi from Washington, D.C. on a regular basis.
What are the cheapest airlines flying from Washington, D.C. to Singapore round-trip?
According to our current data, Air Canada ($1,086), Korean Air ($1,093), and Turkish Airlines ($1,095) offers the cheapest pricing from Washington, D.C. to Singapore. Users have found that Air Canada is 11% cheaper than the other options available to this destination.
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 ($420), Air India ($423), and Turkish Airlines ($445).
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.
Where are the most common layover locations when flying from Washington, D.C. to Singapore?
Flights departing from Washington, D.C. and landing in Singapore layover in Istanbul most frequently.
What are some popular things to do or see while on a layover in Istanbul?
Istanbul travelers tend to visit Taksim Square, Sultan Ahmet Camii, and Beyazit Meydani more than anywhere else. Taksim Square, Sultan Ahmet Camii, and Beyazit Meydani can be accessed by traveling approximately 20.8 mi, 22.3 mi, and 21.7 mi, respectively from Istanbul. Travelers in need of a car in Istanbul can rent one for about $40 per day.
Where are the least popular layover locations for Washington, D.C. to Singapore flights?
Washington, D.C. to Singapore flights have a layover in Doha the least frequently.
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

Dulles Intl to Singapore flights

Reagan-National to Singapore flights

Other flights to Singapore

Top 10 airlines flying from Washington, D.C. to Singapore

Airline	Cheapest	Average	Flexibility	On-time
Air India	Cheapest$807	Average$996	FlexibilityNo cancel fee	On-timeN/A
Turkish Airlines	Cheapest$825	Average$972	FlexibilityNo cancel fee	On-time77%
Etihad Airways	Cheapest$884	Average$1,304	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$904	Average$1,444	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$938	Average$1,585	FlexibilityNo cancel fee	On-time67%
Qatar Airways	Cheapest$1,006	Average$1,280	FlexibilityNo cancel fee	On-time68%
JetBlue	Cheapest$1,024	Average$1,139	FlexibilityNo cancel fee	On-time62%
Korean Air	Cheapest$1,037	Average$1,276	FlexibilityNo cancel fee	On-time81%
Singapore Airlines	Cheapest$1,097	Average$1,757	FlexibilityNo cancel fee	On-time81%
American Airlines	Cheapest$1,160	Average$1,413	FlexibilityNo cancel fee	On-time71%

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$420+ Cheap flights from Washington, D.C. (WAS) to Singapore (SIN)

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Washington, D.C. to Singapore Changi are usually found in October or November, booked 60 days in advance, depart on a Wednesday or Monday and return on a Tuesday

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

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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 junio 12, 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 junio 12, 2025.

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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

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Singapore. Price data was last updated on June 9, 2025.

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 SIN?

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 junio 12, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Singapore. Price data was last updated on December 16, 2024.

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

Read reviews from past customers who have flown EVA Air, Korean Air and Japan Airlines from Washington, D.C. to Singapore. You can also see how each airline compares 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 airport do you fly into for flights to Singapore from Washington, D.C.?

What are the cheapest airlines flying from Washington, D.C. to Singapore round-trip?

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?

Where are the most common layover locations when flying from Washington, D.C. to Singapore?

What are some popular things to do or see while on a layover in Istanbul?

Where are the least popular layover locations for Washington, D.C. to Singapore flights?

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?

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington, D.C. to Singapore

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Top 10 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 junio 12, 2025.