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$406+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SIN
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Singapore Changi are usually found in November or October, booked 68 days in advance, depart on a Wednesday or Monday and return on a Tuesday

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

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 17, 2025.

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.
Search Deals
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. 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.

This Gurufare deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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
This FlightHub deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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
This Air Canada deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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
This oojo deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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
This JetBlue deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/219:00 pmIAD - SIN
1 stop36h 00mJetBlue
Tue 5/66:45 pmSIN - IAD
1 stop25h 55mJetBlue
Deal found 4/16$1,066
This oojo deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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
This Air Canada deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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
This oojo deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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
This FlightHub deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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
This oojo deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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
This Gotogate deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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
This United Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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

Cheapflights Fare Finder

Customize your flight search to find flights from Washington, D.C. to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Singapore that are best for you.

Fly from

Washington, D.C.

Fly to

Singapore

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
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Compare providers for flights from Washington, D.C. to Singapore

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Singapore in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-Singapore flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C.-Singapore flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Singapore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Singapore flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Singapore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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?

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 April 11, 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. to Singapore, you should look to book at least 68 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?

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.

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?

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.

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

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

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

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated April 17, 2025.
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
1,177 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

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

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

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

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

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

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

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

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

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

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

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

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.?

    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. 9 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, Turkish Airlines ($1,029), Air Canada ($1,037), and Cathay Pacific ($1,052) offers the cheapest pricing from Washington, D.C. to Singapore. Users have found that Turkish Airlines is 19% 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 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.

  • 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 $30 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Singapore flights
Dulles Intl to Singapore flights

Top 9 airlines flying from Washington, D.C. to Singapore

Discover the top 9 airlines that operate flights from Washington, D.C. to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$830Average$994FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$904Average$1,469FlexibilityNo cancel feeOn-time69%
Qatar AirwaysCheapest$1,014Average$1,287FlexibilityNo cancel feeOn-time68%
DeltaCheapest$1,015Average$2,280FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,037Average$1,346FlexibilityNo cancel feeOn-time81%
JetBlueCheapest$1,043Average$1,186FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$1,124Average$1,490FlexibilityNo cancel feeOn-time71%
Singapore AirlinesCheapest$1,287Average$1,780FlexibilityNo cancel feeOn-time81%
ANACheapest$1,581Average$2,169FlexibilityNo cancel feeOn-time80%

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