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Cheap flights from Washington, D.C. Dulles Intl Airport to Singapore from £346

IAD — SIN
28 Oct — 4 Nov1
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

Tue 10/1110:00 -
1 stop39h 50m
Sun 29/1102:00 -
2 stops43h 00m
Deal found 28/9£671
Wed 11/1110:00 -
1 stop39h 50m
Thu 26/1102:00 -
2 stops43h 00m
Deal found 25/9£693
Mon 9/1114:35 -
1 stop30h 00m
Mon 16/1119:25 -
1 stop26h 40m
Deal found 25/9£784
Mon 12/1015:10 -
1 stop30h 30m
Thu 22/1021:00 -
1 stop24h 45m
Deal found 25/9£804
Mon 5/1006:10 -
2 stops34h 50m
Wed 21/1007:30 -
2 stops27h 56m
Deal found 25/9£813
Mon 28/908:08 -
2 stops32h 52m
Wed 7/1001:25 -
2 stops28h 08m
Deal found 24/9£817
Thu 12/1114:35 -
1 stop30h 00m
Mon 16/1119:25 -
1 stop26h 40m
Deal found 24/9£825
Fri 16/1015:10 -
1 stop30h 30m
Mon 26/1019:25 -
1 stop26h 40m
Deal found 25/9£834
Thu 8/1011:05 -
1 stop22h 10m
Mon 19/1003:15 -
1 stop24h 40m
Deal found 25/9£847
Mon 9/1111:50 -
1 stop43h 35m
Mon 16/1114:25 -
2 stops31h 40m
Deal found 25/9£855
Thu 12/1114:35 -
1 stop30h 00m
Sun 15/1119:25 -
1 stop26h 40m
Deal found 24/9£856
Wed 14/1021:20 -
2 stops29h 30m
Sun 25/1002:00 -
2 stops30h 05m
Deal found 25/9£863

Find flight deals from Dulles Intl to Singapore

Round-trip from

£671

One-way from

£346

Popular in

December

Cheapest in

February

Average price

£871
Ethiopian Air
  • Ethiopian Air
  • 10/11-29/11
  • 3 total stops
  • 82h 50m total
  • Washington, D.C. to Singapore
Search Deals
27/11-31/12
  • 27/11-31/12
  • 2 total stops
  • 46h 45m total
  • Washington, D.C. to Singapore
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£82 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£35 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

Fri 6/11

11:50-05:00

1 stop28h 10m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£481

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sun 8/11

11:50-05:00

1 stop28h 10m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£481

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 12/11

11:50-20:25

1 stop43h 35m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£481

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sun 8/11

06:05-00:15

2 stops29h 10m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£484

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Thu 3/12

07:00-00:50

2 stops28h 50m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£493

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 1/12

13:30-06:50

1 stop28h 20m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£533

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Sun 6/12

21:20-17:40

1 stop31h 20m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£533
Fastest return journey

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 6/10

06:35-18:35

1 stop24h 00m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£561

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Tue 12/1

06:30-20:15

1 stop24h 45m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£561

Washington, D.C.Singapore

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

IADSIN

Washington, D.C. Dulles Intl

Wed 24/2

15:45-12:05

3 stops31h 20m

Singapore Changi

Wed 31/12

00:00-11:30

Nonstop0h 00m

£734

Flights are sorted by cheapest return flights first.

Deals found on 26/9

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Singapore (average of £721). Flying from Washington, D.C. Dulles Intl Airport to Singapore in December is currently the most expensive (average of £1,491). 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 £739 and £844 in November.
The cheapest return price found within the last 5 days was £671 on Ethiopian Air (10 Nov–29 Nov).

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 25h 30m. Fly via Etihad Airways or Turkish Airlines 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Singapore (average of £721). Flying from Washington, D.C. Dulles Intl Airport to Singapore in December is currently the most expensive (average of £1,491). 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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