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Cheap flights from Washington, D.C. Dulles Intl Airport to Singapore from £405

IAD — SIN
5 Oct — 12 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to Singapore

Enter your travel dates to find the best prices.

Cheapest flights from Dulles Intl to Singapore

Sun 13/915:10 -
1 stop30h 30m
Wed 30/921:00 -
1 stop24h 45m
Deal found 31/8£764
Fri 11/913:15 -
1 stop27h 45m
Fri 25/922:00 -
1 stop25h 05m
Deal found 31/8£788
Mon 7/908:28 -
2 stops32h 32m
Sun 20/901:25 -
2 stops26h 52m
Deal found 31/8£790
Fri 11/910:15 -
2 stops30h 45m
Sat 26/922:00 -
1 stop25h 05m
Deal found 31/8£792
Sat 12/915:10 -
1 stop30h 30m
Wed 30/921:00 -
1 stop24h 45m
Deal found 31/8£793
Mon 14/906:00 -
2 stops29h 55m
Thu 24/907:30 -
2 stops26h 14m
Deal found 31/8£796
Mon 21/915:10 -
1 stop30h 30m
Thu 8/1021:00 -
1 stop24h 45m
Deal found 1/9£798
Fri 11/908:08 -
2 stops27h 47m
Tue 29/922:00 -
2 stops28h 11m
Deal found 31/8£800
Mon 28/913:15 -
1 stop42h 00m
Thu 8/1022:00 -
2 stops38h 42m
Deal found 31/8£801
Wed 16/915:10 -
1 stop30h 30m
Wed 30/921:00 -
1 stop24h 45m
Deal found 31/8£806
Wed 4/1114:35 -
1 stop30h 00m
Fri 13/1119:25 -
1 stop26h 40m
Deal found 4/9£809

Find flight deals from Dulles Intl to Singapore

Round-trip from

£764

One-way from

£405

Popular in

December

Cheapest in

April

Average price

£853
Etihad Airways
  • Etihad Airways
  • 17/9-29/9
  • 2 total stops
  • 55h 15m total
  • Washington, D.C. to Singapore
Search Deals
Korean Air
  • Korean Air
  • 16/9-31/12
  • 1 total stop
  • 27h 45m total
  • Washington, D.C. to Singapore
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£67 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£31 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Singapore that are best for you.

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Cheapest return flight

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 15/2

14:35-09:35

1 stop30h 00m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£426

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 24/2

06:10-11:50

2 stops40h 40m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£443
Fastest return journey

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 14/11

11:50-05:00

1 stop28h 10m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£445

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Mon 15/2

06:00-05:00

2 stops34h 00m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£447

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Fri 25/9

06:00-23:55

2 stops29h 55m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£449

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 28/1

18:30-20:25

2 stops36h 55m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£449

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 3/10

18:07-05:00

2 stops46h 53m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£469

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sat 7/11

14:35-09:35

1 stop30h 00m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£475

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 15/9

10:15-05:00

2 stops30h 45m

Singapore Changi

Sun 27/9

01:25-11:05

1 stop21h 40m

£792

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 24/9

15:10-09:40

1 stop30h 30m

Singapore Changi

Tue 6/10

21:00-09:45

1 stop24h 45m

£798

Flights are sorted by cheapest return flights first.

Deals found on 1/9

Showing 1-10 of 20 resultsSorted by cheapest first
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Best time to book a flight from Dulles Intl to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Dulles Intl with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Singapore

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

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Singapore may vary depending on when you book. For the best chance of a lower fare, look to book 86 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Singapore (average of £790). Flying from Washington, D.C. Dulles Intl Airport to Singapore in December is currently the most expensive (average of £1,439). 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 for a return flight from Washington, D.C. Dulles Intl Airport to Singapore?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Singapore flights typically cost between £832 and £905 in September.
The cheapest return price found within the last 5 days was £764 on Etihad Airways (17 Sept–29 Sept).

Related info for your journey

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

    Most people fly into Singapore Changi (SIN) if they book a flight to Singapore from Washington, D.C. Dulles Intl. On average, Changi has 0 inbound flights from Washington, D.C. Dulles Intl per day from 0 airlines. Singapore Changi is conveniently located just 10.5 mi from Singapore’s city center.

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

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Singapore in 30h. Fly via Etihad Airways or Korean Air to get the fastest option. The distance from Washington, D.C. Dulles Intl Airport to Singapore is about 9644 mi. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Dulles Intl to Singapore that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Singapore flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Singapore.

  • Can I find deals for business class flights from Dulles Intl to Singapore?

    Yes. Cheapflights offers flight deals from Dulles Intl 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. Dulles Intl Airport to Singapore?

    Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Singapore (average of £790). Flying from Washington, D.C. Dulles Intl Airport to Singapore in December is currently the most expensive (average of £1,439). 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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