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Cheap flights from Washington, D.C. to Singapore from S$ 627

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 7-9. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SIN
11 Sep — 18 Sep1
1 adult
1 adult, Economy, 0 bags

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

Enter your travel dates to find the best prices.

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 12 August 2026.

Tue 8-913:59 -
2 stops58h 46m
Tue 22-920:00 -
2 stops39h 10m
Deal found 8-8S$ 1,276
Tue 8-913:59 -
2 stops58h 46m
Thu 17-920:00 -
2 stops39h 10m
Deal found 8-8S$ 1,292
Sun 16-813:30 -
1 stop22h 25m
Mon 31-822:00 -
1 stop25h 05m
Deal found 11-8S$ 1,298
Tue 1-923:00 -
1 stop34h 55m
Mon 14-923:25 -
1 stop32h 05m
Deal found 7-8S$ 1,302
Thu 27-815:10 -
1 stop30h 30m
Fri 11-921:00 -
1 stop24h 45m
Deal found 10-8S$ 1,305
Tue 8-908:08 -
2 stops27h 47m
Thu 17-907:30 -
1 stop39h 35m
Deal found 8-8S$ 1,308
Sun 30-808:28 -
2 stops27h 27m
Sun 13-901:25 -
1 stop21h 40m
Deal found 10-8S$ 1,310
Tue 1-923:00 -
1 stop29h 25m
Thu 10-917:55 -
1 stop37h 35m
Deal found 10-8S$ 1,317
Fri 4-923:00 -
1 stop29h 25m
Fri 11-909:00 -
1 stop22h 30m
Deal found 7-8S$ 1,322
Fri 4-923:00 -
1 stop29h 25m
Thu 17-917:55 -
1 stop37h 35m
Deal found 7-8S$ 1,325
Sun 30-815:10 -
1 stop30h 30m
Mon 14-921:00 -
1 stop24h 45m
Deal found 10-8S$ 1,329
Thu 20-819:26 -
2 stops40h 29m
Wed 2-922:00 -
1 stop25h 05m
Deal found 11-8S$ 1,331

Find 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 12 August 2026.

Round-trip from

S$ 1,276

One-way from

S$ 627

Popular in

December

Cheapest in

February

Average price

S$ 1,472
Gulf Air
  • Gulf Air
  • 8-9-22-9
  • 4 total stops
  • 97h 56m total
  • Washington, D.C. to Singapore
Search Deals
Etihad Airways
  • Etihad Airways
  • 7-9
  • 1 total stop
  • 30h 30m total
  • Washington, D.C. to Singapore
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (S$ 224 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (S$ 109 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 200,618 searches. Data last updated 12 August 2026.
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 return flight

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 26-8

13:30-05:00

1 stop27h 30m

Singapore Changi

Mon 31-8

22:00-11:05

1 stop25h 05m

S$ 1,365

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 7-9

13:15-05:00

1 stop27h 45m

Singapore Changi

Sun 13-9

01:25-11:05

1 stop21h 40m

S$ 1,397

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Fri 18-9

13:15-05:00

1 stop27h 45m

Singapore Changi

Sat 26-9

22:00-11:05

1 stop25h 05m

S$ 1,397

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Tue 8-9

07:45-05:00

2 stops33h 15m

Singapore Changi

Wed 23-9

07:30-23:44

2 stops28h 14m

S$ 1,411

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Fri 18-9

08:40-23:55

2 stops27h 15m

Singapore Changi

Sat 26-9

22:00-14:10

2 stops28h 10m

S$ 1,417

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 29-8

06:00-23:55

2 stops29h 55m

Singapore Changi

Wed 16-9

01:25-11:05

1 stop21h 40m

S$ 1,434

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 5-11

14:35-09:35

1 stop30h 00m

Singapore Changi

Mon 9-11

19:25-09:05

1 stop26h 40m

S$ 1,452

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 28-11

08:00-00:10

2 stops27h 10m

Singapore Changi

Sat 5-12

10:40-09:50

1 stop36h 10m

S$ 1,467

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 2-2

07:05-05:00

2 stops32h 55m

Singapore Changi

Wed 17-2

10:40-00:20

2 stops26h 40m

S$ 1,475

Washington, D.C.Singapore

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

DCASIN

Washington, D.C. Reagan-National

Wed 3-2

07:00-00:10

2 stops28h 10m

Singapore Changi

Thu 18-2

22:30-18:05

2 stops32h 35m

S$ 1,481

Flights are sorted by cheapest return flights first.

Deals found on 9-8

Showing 1-10 of 60 resultsSorted by cheapest first
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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 return 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, February is the cheapest month in which you can book a flight from Washington, D.C. to Singapore (average of S$ 1,317). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,534). 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 far ahead should I book a flight from Washington, D.C. to Singapore?

The best time to book flights from Washington, D.C. to Singapore is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 12 August 2026.
See what other customers who have flown with United Airlines from Washington, D.C. to Singapore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,111 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
10,111 reviews
United Airlines
7.4
Good
10,111 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

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?

    A quick flight from Washington, D.C. to Singapore can take about 27h 30m. Korean Air provides one of the quickest options available for as low as S$ 1,365. Airlines will cover a distance of 15521 km. This flight may include one or multiple stops.

  • What are the most popular routes from Washington, D.C. to Singapore?

    Most travellers choose Washington, D.C. Dulles Intl - Singapore Changi, Washington, D.C. Reagan-National - Singapore Changi or Baltimore/Washington - Singapore Changi when deciding on the best route from Washington, D.C. to Singapore.

  • 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 holiday 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 S$ 1,317). Flying from Washington, D.C. to Singapore in December is currently the most expensive (average of S$ 2,534). 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

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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.
Dulles Intl to Singapore flights

Top airline flying from Washington, D.C. to Singapore

Discover the top airline 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 200,618 searches. Data last updated 12 August 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapestS$ 1,097AverageS$ 2,529FlexibilityNo cancel feeOn-time62%
Search JetBlue flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Washington, D.C. to Singapore?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington, D.C. to Singapore. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Singapore?

Cheapflights simply makes it quick and affordable to book flights from Washington, D.C. to Singapore by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Washington, D.C. to Singapore with no change fees?

Yes, we can. To see specific flights from Washington, D.C. to Singapore with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Washington, D.C. to Singapore become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Singapore from Washington, D.C. today and book when prices fit your budget.

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