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$477+ Cheap flights from Washington, D.C. (WAS) to Singapore (SIN)

WAS — SIN
Nov 7 — Nov 141
Sat 11/7
Sat 11/14
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Singapore

Cheapest flights from Washington, D.C. to Singapore

Mon 11/911:25 am -
2 stops39h 50m
Wed 11/1811:55 pm -
2 stops42h 39m
Deal found 10/4$1,087
Tue 11/172:30 pm -
2 stops60h 45m
Tue 11/2411:55 pm -
2 stops42h 48m
Deal found 10/3$1,098
Tue 11/310:45 am -
3 stops34h 40m
Tue 11/171:40 am -
3 stops35h 53m
Deal found 10/5$1,149
Wed 11/410:45 am -
3 stops34h 40m
Wed 11/112:20 pm -
3 stops33h 32m
Deal found 10/7$1,163
Mon 11/29:52 pm -
3 stops37h 23m
Mon 11/1610:30 pm -
2 stops30h 44m
Deal found 10/6$1,172
Thu 11/126:00 am -
2 stops36h 00m
Tue 11/248:40 am -
2 stops38h 44m
Deal found 10/8$1,177
Thu 11/129:55 am -
2 stops32h 05m
Tue 11/248:40 am -
2 stops39h 48m
Deal found 10/8$1,177
Fri 11/610:20 pm -
1 stop30h 20m
Fri 11/1311:15 pm -
1 stop25h 30m
Deal found 10/7$1,178
Mon 10/129:00 pm -
1 stop23h 50m
Mon 10/197:40 pm -
1 stop25h 05m
Deal found 10/5$1,179
Sun 11/12:25 pm -
1 stop30h 10m
Sat 11/147:25 pm -
1 stop26h 35m
Deal found 10/5$1,180
Wed 11/2511:35 pm -
2 stops45h 55m
Sun 12/611:15 pm -
1 stop25h 30m
Deal found 10/6$1,182
Thu 10/811:05 am -
1 stop22h 10m
Tue 10/137:40 pm -
1 stop32h 15m
Deal found 10/7$1,186

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,087
(Air China)

One-way from

$477
(lastminute.com)

Popular in

December

Cheapest in

February

Average price

$1,178
Provider with most accurate pricing for Washington, D.C. (WAS)-Singapore Changi flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Singapore Changi flights.
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From Washington, D.C. (WAS) to Singapore Changi
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One-way flight from Washington, D.C. (WAS) to Singapore Changi
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($131 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($68 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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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

Cheapest round-trip

Washington, D.C.Singapore

IAD Washington, D.C. Dulles Intl - SIN Singapore Changi

IADSIN

Washington, D.C. Dulles Intl

Wed 1/27

11:50 am-8:25 pm

1 stop43h 35m

Singapore Changi

Wed 12/31

12:00 am-11:30 am

Nonstop0h 00m

$512

Washington, D.C.Singapore

DCA Washington, D.C. Reagan-National - SIN Singapore Changi

DCASIN

Washington, D.C. Reagan-National

Thu 1/28

6:05 am-8:25 pm

2 stops49h 20m

Singapore Changi

Wed 12/31

12:00 am-11:30 am

Nonstop0h 00m

$518

Washington, D.C.Singapore

DCA Washington, D.C. Reagan-National - SIN Singapore Changi

DCASIN

Washington, D.C. Reagan-National

Wed 1/27

5:00 pm-8:25 pm

2 stops38h 25m

Singapore Changi

Wed 12/31

12:00 am-11:30 am

Nonstop0h 00m

$518

Washington, D.C.Singapore

IAD Washington, D.C. Dulles Intl - SIN Singapore Changi

IADSIN

Washington, D.C. Dulles Intl

Thu 1/28

7:00 am-12:15 am

2 stops28h 15m

Singapore Changi

Wed 12/31

12:00 am-11:30 am

Nonstop0h 00m

$518

BaltimoreSingapore

BWI Baltimore/Washington - SIN Singapore Changi

BWISIN

Baltimore/Washington

Tue 11/3

4:59 pm-11:45 pm

3 stops41h 46m

Singapore Changi

Wed 12/31

12:00 am-11:30 am

Nonstop0h 00m

$553

Washington, D.C.Singapore

DCA Washington, D.C. Reagan-National - SIN Singapore Changi

DCASIN

Washington, D.C. Reagan-National

Fri 1/15

8:20 am-12:15 am

2 stops26h 55m

Singapore Changi

Wed 12/31

12:00 am-11:30 am

Nonstop0h 00m

$583

Washington, D.C.Singapore

DCA Washington, D.C. Reagan-National - SIN Singapore Changi

DCASIN

Washington, D.C. Reagan-National

Sun 1/17

8:20 am-12:15 am

2 stops26h 55m

Singapore Changi

Wed 12/31

12:00 am-11:30 am

Nonstop0h 00m

$583

BaltimoreSingapore

BWI Baltimore/Washington - SIN Singapore Changi

BWISIN

Baltimore/Washington

Mon 3/15

12:11 pm-4:50 pm

2 stops40h 39m

Singapore Changi

Wed 12/31

12:00 am-11:30 am

Nonstop0h 00m

$599

BaltimoreSingapore

BWI Baltimore/Washington - SIN Singapore Changi

BWISIN

Baltimore/Washington

Wed 1/27

4:59 pm-11:50 am

2 stops29h 51m

Singapore Changi

Wed 12/31

12:00 am-11:30 am

Nonstop0h 00m

$605

Washington, D.C.Singapore

DCA Washington, D.C. Reagan-National - SIN Singapore Changi

DCASIN

Washington, D.C. Reagan-National

Wed 1/27

9:30 am-5:30 am

1 stop31h 00m

Singapore Changi

Wed 12/31

12:00 am-11:30 am

Nonstop0h 00m

$676

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/5

Showing 1-10 of 50 resultsSorted by cheapest first
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Compare providers for flights from Washington, D.C. to Singapore

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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Singapore flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

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, February is the cheapest month in which you can book a flight from Washington, D.C. to Singapore (average of $970). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of $2,023). 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.

How much does it cost to fly round-trip from Washington, D.C. to Singapore?

Airfare is below average for this route at the moment.
Washington, D.C. to Singapore flights typically cost between $1,138 and $1,237 in November.
The cheapest round-trip price found within the last 5 days was $1,087 on Multiple Airlines (Nov 9-Nov 18).

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 84 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.

Reviews of airlines servicing Singapore

Get a feel of what it's like to fly with Turkish Airlines,United Airlines, andQatar Airways from Washington, D.C. to Singapore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.4
Good
4,455 reviews

Boarding

7.3

Comfort

7.3

Entertainment

7.5

Food

7.5

Overall

7.4

Crew

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future
Turkish Airlines
7.4
Good
4,455 reviews
Turkish Airlines
7.4
Good
4,455 reviews

Boarding

7.3

Comfort

7.3

Entertainment

7.5

Food

7.5

Overall

7.4

Crew

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future
United Airlines
7.4
Good
10,319 reviews
Turkish Airlines
7.4
Good
4,455 reviews

Boarding

7.3

Comfort

7.3

Entertainment

7.5

Food

7.5

Overall

7.4

Crew

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future
Qatar Airways
7.3
Good
3,726 reviews
Turkish Airlines
7.4
Good
4,455 reviews

Boarding

7.3

Comfort

7.3

Entertainment

7.5

Food

7.5

Overall

7.4

Crew

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future
Etihad Airways
7.3
Good
1,540 reviews
Turkish Airlines
7.4
Good
4,455 reviews

Boarding

7.3

Comfort

7.3

Entertainment

7.5

Food

7.5

Overall

7.4

Crew

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future
JetBlue
7.1
Good
3,048 reviews
Turkish Airlines
7.4
Good
4,455 reviews

Boarding

7.3

Comfort

7.3

Entertainment

7.5

Food

7.5

Overall

7.4

Crew

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2026

SEA - IST

I was in business class on this airplane for a 12 hour flight from Seattle to Istanbul. It was about the smoothest in the most luxurious flight. I think I have ever been on. The staff were excellent and extremely patient which I really appreciate it. Given the opportunity, I will certainly choose Turkish Airlines in the future. Job well done, hope to see you again in the future

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. 6 airlines have flights to Singapore Changi from Washington, D.C. on a regular basis.

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

    Delta, Ethiopian Air, and SWISS can get you from Washington, D.C. to Singapore in just under 28h 10m. Your travel time can differ by up to 11h 40m. 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 cheapest airlines flying from Washington, D.C. to Singapore round-trip?

    According to our current data, Etihad Airways ($835), Turkish Airlines ($938), and Qatar Airways ($987) offers the cheapest pricing from Washington, D.C. to Singapore. Users have found that Etihad Airways is 36% 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 Etihad Airways ($479), Qatar Airways ($485), and Turkish Airlines ($532).

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. to Singapore (average of $970). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of $2,023). 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

Top 6 airlines flying from Washington, D.C. to Singapore

AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$835Average$1,075FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$938Average$1,164FlexibilityNo cancel feeOn-time77%
Qatar AirwaysCheapest$987Average$1,203FlexibilityNo cancel feeOn-time68%
Korean AirCheapest$1,069Average$1,154FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$1,125Average$1,756FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$1,314Average$2,103FlexibilityNo cancel feeOn-time62%

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