Find flights
When to book
Airlines
FAQs

Cheap flights from Washington, D.C. Dulles Intl Airport to Singapore from S$ 553

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 8-8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SIN
4 May — 11 May1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Singapore Changi are usually found in November or March, booked 56 days in advance, depart on a Monday or Tuesday and return on a Friday

Cheap flight deals from Dulles Intl to Singapore

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 April 2025.

Round-trip from

S$ 1,341

One-way from

S$ 553

Popular in

December

Cheapest in

November

Average price

S$ 1,476
IndiGo
  • IndiGo
  • 20-9-5-10
  • 3 total stops
  • 68h 30m total
  • Washington, D.C. to Singapore
Air India
  • Air India
  • 8-8
  • 1 total stop
  • 32h 30m total
  • Washington, D.C. to Singapore
Highest demand for flights based on searches. 1% potential increase in price (S$ 31 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (S$ 82 potential savings vs. average return price).
Average for round-trip flights in April 2025

Find flight deals from Dulles Intl to Singapore

Cheapest flights from Dulles Intl to Singapore
Explore the most affordable flight options available from Dulles Intl to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.

Sun 4-513:30IAD - SIN
1 stop40h 25mTurkish Airlines
Fri 9-510:15SIN - IAD
1 stop37h 30mTurkish Airlines
Deal found 29-4S$ 1,324
Sat 20-911:00IAD - SIN
1 stop32h 30mMultiple Airlines
Sun 5-1019:45SIN - IAD
2 stops36h 00mMultiple Airlines
Deal found 28-4S$ 1,341
Wed 7-517:44IAD - SIN
2 stops49h 21mAir Canada
Tue 13-506:15SIN - IAD
2 stops26h 53mAir Canada
Deal found 29-4S$ 1,358
Mon 3-1120:05IAD - SIN
2 stops27h 50mQatar Airways
Thu 6-1110:15SIN - IAD
1 stop35h 05mQatar Airways
Deal found 29-4S$ 1,404
Wed 30-415:35IAD - SIN
2 stops27h 55mAir India
Fri 9-520:30SIN - IAD
1 stop23h 10mAir India
Deal found 29-4S$ 1,440
Mon 11-821:40IAD - SIN
2 stops31h 40mIndiGo
Wed 27-819:45SIN - IAD
2 stops36h 00mIndiGo
Deal found 29-4S$ 1,486
Wed 17-922:05IAD - SIN
1 stop23h 35mEtihad Airways
Sat 27-921:10SIN - IAD
1 stop31h 00mEtihad Airways
Deal found 28-4S$ 1,489
Mon 1-913:15IAD - SIN
1 stop42h 40mKorean Air
Tue 9-901:10SIN - IAD
1 stop21h 45mKorean Air
Deal found 29-4S$ 1,543
Wed 17-921:40IAD - SIN
2 stops29h 10mEthiopian Air
Tue 30-902:00SIN - IAD
2 stops30h 05mEthiopian Air
Deal found 28-4S$ 1,562
Tue 15-722:08IAD - SIN
1 stop32h 17mUnited Airlines
Wed 27-808:45SIN - IAD
2 stops26h 32mUnited Airlines
Deal found 29-4S$ 1,567
Mon 5-507:25IAD - SIN
2 stops33h 35mDelta
Tue 20-507:30SIN - IAD
2 stops28h 05mDelta
Deal found 29-4S$ 1,580
Sat 9-806:27IAD - SIN
2 stops41h 18mCathay Pacific
Sun 24-820:05SIN - IAD
2 stops50h 56mCathay Pacific
Deal found 29-4S$ 1,734

Cheapflights Fare Finder

Customise your flight search to find flights from Dulles Intl 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 29 April 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Singapore that are best for you.

Fly from

Dulles Intl

Fly to

Singapore

Route

Depart

Return

Price

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 20-9

11:00-07:30

1 stop32h 30m

Singapore Changi

Sun 5-10

19:45-19:45

2 stops36h 00m

S$ 1,341

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 13-8

11:00-21:45

1 stop22h 45m

Singapore Changi

Sat 30-8

20:30-07:40

1 stop23h 10m

S$ 1,358

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 9-8

13:30-17:55

1 stop40h 25m

Singapore Changi

Sun 24-8

23:10-11:45

1 stop24h 35m

S$ 1,421

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 31-5

17:31-07:05

2 stops49h 34m

Singapore Changi

Sun 29-6

09:10-21:16

2 stops48h 06m

S$ 1,423

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 28-9

11:00-00:10

2 stops25h 10m

Singapore Changi

Thu 9-10

03:10-15:40

1 stop24h 30m

S$ 1,442

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 10-7

13:30-17:20

2 stops39h 50m

Singapore Changi

Fri 19-9

19:45-19:45

2 stops36h 00m

S$ 1,480

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 17-9

22:05-09:40

1 stop23h 35m

Singapore Changi

Sat 27-9

21:10-16:10

1 stop31h 00m

S$ 1,489

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 1-9

13:15-23:40

1 stop22h 25m

Singapore Changi

Tue 9-9

01:10-10:55

1 stop21h 45m

S$ 1,543

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 17-9

21:40-14:50

2 stops29h 10m

Singapore Changi

Fri 26-9

02:00-20:05

2 stops30h 05m

S$ 1,562

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 15-7

22:08-18:25

1 stop32h 17m

Singapore Changi

Wed 27-8

08:45-23:17

2 stops26h 32m

S$ 1,567

Flights are sorted by cheapest return flights first.

Deals found on 28-4

Showing 1-10 of 25 results
1
2
3

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
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. Dulles Intl Airport to Singapore

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

Use this chart to determine the optimal time to book a return flight from Dulles Intl to Singapore. Price data was last updated on 25 April 2025.

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Singapore. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Rainfall in Singapore by month

Plan your trip to Singapore by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Singapore ranges from 150.0 - 269.0 inches per month. December is typically the wettest month, when rainfall can reach 269.0 mm. July is typically the driest time to visit Singapore when rainfall is around 150.0 mm.

Temperature in Singapore by month

Plan your trip to Singapore by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 26.0 C).

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 29 April 2025.
Peruse reviews from past customers who have flown with Korean Air, China Airlines and Delta from Washington, D.C. to Singapore to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Food

8.1

Entertainment

8.2

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.

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Food

8.1

Entertainment

8.2

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.

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Food

8.1

Entertainment

8.2

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.
8.0
Very Good

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Food

8.1

Entertainment

8.2

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.

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Food

8.1

Entertainment

8.2

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.

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Food

8.1

Entertainment

8.2

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 Dulles Intl to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Singapore from Washington, D.C. Dulles Intl?

    Located just 16.9 km from the city centre, Singapore Changi is the airport most travellers will use when flying to Singapore from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Changi (SIN) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 0 different airlines.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Singapore round-trip?

    Air India, at S$ 1,358, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Singapore.Alternate airlines to your destination round-trip include Turkish Airlines and Air Canada. Air India is priced at 16% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Singapore one-way?

    The cheapest airline one-way is Air India, with whom users have recently found tickets for as low as S$ 553. However, be on the lookout for offers from Turkish Airlines and IndiGo, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Singapore for a low price.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 Dulles Intl to Singapore?

Cheapflights makes it easy to find Dulles Intl to Singapore flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Singapore?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Dulles Intl to Singapore for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Dulles Intl to Singapore with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Dulles Intl to Singapore flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Dulles Intl to Singapore become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.