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$276+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SIN
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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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 August 20, 2025.

Round-trip from

$799
(Mytrip)

One-way from

$276
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$738
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. 12% potential increase in price ($160 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($60 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 20, 2025.

This Mytrip deal was found by Cheapflights users on 8/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/175:45 amBWI - SIN
2 stops29h 35mMultiple Airlines
Wed 9/242:35 pmSIN - BWI
2 stops28h 26mMultiple Airlines
Deal found 8/18$799
This Mytrip deal was found by Cheapflights users on 8/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:45 amBWI - SIN
2 stops29h 35mMultiple Airlines
Thu 10/92:35 pmSIN - BWI
2 stops28h 00mMultiple Airlines
Deal found 8/18$845
This CrystalTravel deal was found by Cheapflights users on 8/18. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:05 pmIAD - SIN
1 stop23h 30mEtihad Airways
Sat 11/87:25 pmSIN - IAD
1 stop33h 40mEtihad Airways
Deal found 8/18$866
This Trip.com deal was found by Cheapflights users on 8/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/45:45 amBWI - SIN
2 stops36h 30mMultiple Airlines
Sat 10/118:40 pmSIN - BWI
2 stops45h 55mMultiple Airlines
Deal found 8/20$876
This lastminute.com deal was found by Cheapflights users on 8/17. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1110:05 pmIAD - SIN
1 stop23h 35mEtihad Airways
Mon 10/209:10 pmSIN - IAD
1 stop31h 00mEtihad Airways
Deal found 8/17$879
This Mytrip deal was found by Cheapflights users on 8/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/85:45 amBWI - SIN
2 stops31h 05mMultiple Airlines
Tue 9/161:25 pmSIN - BWI
2 stops29h 36mMultiple Airlines
Deal found 8/18$884
This Expedia deal was found by Cheapflights users on 8/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3110:05 pmIAD - SIN
1 stop23h 35mEtihad Airways
Sun 9/149:10 pmSIN - IAD
1 stop31h 00mEtihad Airways
Deal found 8/19$888
This Gotogate deal was found by Cheapflights users on 8/18. 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.
Mon 8/2510:05 pmIAD - SIN
1 stop23h 35mEtihad Airways
Mon 9/89:10 pmSIN - IAD
1 stop31h 00mEtihad Airways
Deal found 8/18$889
This Gotogate deal was found by Cheapflights users on 8/19. 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.
Thu 9/1110:05 pmIAD - SIN
1 stop23h 35mEtihad Airways
Tue 9/309:10 pmSIN - IAD
1 stop31h 00mEtihad Airways
Deal found 8/19$894
This Gotogate deal was found by Cheapflights users on 8/19. 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.
Thu 9/410:05 pmIAD - SIN
1 stop23h 35mEtihad Airways
Fri 9/199:10 pmSIN - IAD
1 stop31h 00mEtihad Airways
Deal found 8/19$895
This Gotogate deal was found by Cheapflights users on 8/20. 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.
Tue 9/910:05 pmIAD - SIN
1 stop24h 20mEtihad Airways
Mon 9/299:10 pmSIN - IAD
1 stop31h 00mEtihad Airways
Deal found 8/20$898
This Gotogate deal was found by Cheapflights users on 8/20. 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.
Tue 9/910:05 pmIAD - SIN
1 stop24h 20mEtihad Airways
Tue 9/239:10 pmSIN - IAD
1 stop31h 00mEtihad Airways
Deal found 8/20$900

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 August 20, 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

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Wed 9/17

5:45 am-11:20 pm

2 stops29h 35m

Singapore Changi

Wed 9/24

2:35 pm-7:01 am

2 stops28h 26m

$799

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Thu 10/2

5:45 am-11:20 pm

2 stops29h 35m

Singapore Changi

Thu 10/9

2:35 pm-6:35 am

2 stops28h 00m

$845

BaltimoreSingapore

BWI - SIN

BWISIN

Baltimore/Washington

Mon 9/8

5:45 am-12:50 am

2 stops31h 05m

Singapore Changi

Tue 9/16

1:25 pm-7:01 am

2 stops29h 36m

$884

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 10/11

10:05 pm-9:40 am

1 stop23h 35m

Singapore Changi

Mon 10/20

9:10 pm-4:10 pm

1 stop31h 00m

$886

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 9/11

10:05 pm-9:40 am

1 stop23h 35m

Singapore Changi

Tue 9/30

9:10 pm-4:10 pm

1 stop31h 00m

$894

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 9/14

10:05 pm-9:40 am

1 stop23h 35m

Singapore Changi

Tue 9/30

9:10 pm-4:10 pm

1 stop31h 00m

$894

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 9/18

10:05 pm-9:40 am

1 stop23h 35m

Singapore Changi

Fri 10/3

9:10 pm-4:10 pm

1 stop31h 00m

$900

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 9/3

10:05 pm-9:40 am

1 stop23h 35m

Singapore Changi

Thu 9/18

9:10 pm-4:10 pm

1 stop31h 00m

$901

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 10/13

10:05 pm-9:40 am

1 stop23h 35m

Singapore Changi

Fri 11/7

7:25 pm-4:05 pm

1 stop33h 40m

$904

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 9/1

10:05 pm-9:40 am

1 stop23h 35m

Singapore Changi

Wed 9/10

9:10 pm-4:10 pm

1 stop31h 00m

$906

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 58 results
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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, October is the cheapest month in which you can book a flight from Washington, D.C. to Singapore (average of $996). 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?

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 August 20, 2025.

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.

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 August 20, 2025.
Read reviews from past customers who have flown Korean Air, Qatar Airways, and United Airlines from Washington, D.C. to Singapore. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,131 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,131 reviews
Korean Air
8.4
Very good
1,131 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Qatar Airways
7.4
Good
3,611 reviews
Korean Air
8.4
Very good
1,131 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
United Airlines
7.4
Good
8,928 reviews
Korean Air
8.4
Very good
1,131 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Turkish Airlines
7.3
Good
3,949 reviews
Korean Air
8.4
Very good
1,131 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air India
5.5
Fair
2,929 reviews
Korean Air
8.4
Very good
1,131 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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.

  • How long is the flight from Washington, D.C. to Singapore?

    Etihad Airways, Air Canada, and Singapore Airlines can get you from Washington, D.C. to Singapore in just under 23h 35m. Your travel time can differ by up to 13h 30m. The distance between Washington, D.C. and Singapore is about 9644 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, October is the cheapest month in which you can book a flight from Washington, D.C. to Singapore (average of $996). 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

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Alternative routes for Washington, D.C. to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington, D.C. to Singapore

Discover the top 10 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$807Average$996FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$820Average$951FlexibilityNo cancel feeOn-time77%
Etihad AirwaysCheapest$833Average$932FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$938Average$1,526FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$944Average$1,199FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$985Average$1,366FlexibilityNo cancel feeOn-time69%
Qatar AirwaysCheapest$996Average$1,270FlexibilityNo cancel feeOn-time68%
JetBlueCheapest$1,024Average$1,139FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$1,066Average$1,128FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$1,196Average$1,223FlexibilityNo cancel feeOn-time71%

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