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Cheap flights from Washington, D.C. Dulles Intl Airport to Singapore from S$ 535

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 19-9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SIN
6 Jul — 13 Jul1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Singapore Changi are usually found in November or March, booked 52 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 1 July 2025.

Round-trip from

S$ 1,341

One-way from

S$ 535

Popular in

December

Cheapest in

November

Average price

S$ 2,044
Korean Air
  • Korean Air
  • 27-8-6-9
  • 4 total stops
  • 60h 13m total
  • Washington, D.C. to Singapore
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IndiGo
  • IndiGo
  • 19-9
  • 2 total stops
  • 39h 50m total
  • Washington, D.C. to Singapore
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (S$ 42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (S$ 72 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
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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 1 July 2025.

Wed 27-806:00IAD - SIN
2 stops29h 40mKorean Air
Sat 6-901:10SIN - IAD
2 stops30h 33mKorean Air
Deal found 30-6S$ 1,341
Sun 30-1109:55IAD - SIN
2 stops33h 00mAir Canada
Fri 5-1210:00SIN - IAD
2 stops38h 23mAir Canada
Deal found 30-6S$ 1,342
Wed 17-921:00IAD - SIN
2 stops25h 15mQatar Airways
Tue 30-903:10SIN - IAD
1 stop24h 30mQatar Airways
Deal found 30-6S$ 1,361
Tue 7-1021:40IAD - SIN
1 stop23h 05mTurkish Airlines
Tue 9-1223:25SIN - IAD
1 stop25h 20mTurkish Airlines
Deal found 30-6S$ 1,369
Sun 3-812:50IAD - SIN
1 stop42h 40mAir India
Thu 21-820:30SIN - IAD
2 stops26h 45mAir India
Deal found 29-6S$ 1,370
Fri 22-812:50IAD - SIN
3 stops31h 25mMultiple Airlines
Thu 28-814:20SIN - IAD
3 stops32h 55mMultiple Airlines
Deal found 29-6S$ 1,373
Wed 20-821:40IAD - SIN
2 stops31h 40mIndiGo
Mon 25-819:45SIN - IAD
2 stops36h 00mIndiGo
Deal found 29-6S$ 1,396
Sat 25-1018:50IAD - SIN
1 stop32h 40mSAUDIA
Fri 31-1002:00SIN - IAD
1 stop25h 45mSAUDIA
Deal found 30-6S$ 1,467

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 1 July 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

Wed 27-8

06:00-23:40

2 stops29h 40m

Singapore Changi

Sat 6-9

01:10-19:43

2 stops30h 33m

S$ 1,341

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 30-11

09:55-07:55

2 stops33h 00m

Singapore Changi

Fri 5-12

10:00-11:23

2 stops38h 23m

S$ 1,342

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 17-9

21:00-10:15

2 stops25h 15m

Singapore Changi

Tue 30-9

03:10-15:40

1 stop24h 30m

S$ 1,361

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 18-8

21:40-08:30

1 stop22h 50m

Singapore Changi

Fri 29-8

19:45-19:45

2 stops36h 00m

S$ 1,364

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 22-8

12:50-19:30

1 stop42h 40m

Singapore Changi

Sat 30-8

08:45-11:15

2 stops38h 30m

S$ 1,368

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 7-10

21:40-08:45

1 stop23h 05m

Singapore Changi

Tue 9-12

23:25-11:45

1 stop25h 20m

S$ 1,369

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 20-8

21:40-17:20

2 stops31h 40m

Singapore Changi

Mon 25-8

19:45-19:45

2 stops36h 00m

S$ 1,396

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 19-9

13:30-17:20

2 stops39h 50m

S$ 535

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 13-8

12:50-07:15

1 stop30h 25m

S$ 544

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 19-8

21:40-17:55

1 stop32h 15m

S$ 572

Flights are sorted by cheapest return flights first.

Deals found on 30-6

Showing 1-10 of 14 results
1
2

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 27 June 2025.

Booking 52 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.

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 1 July 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Singapore, such as Korean Air, Qatar Airways, andEtihad Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Overall

8.4

Comfort

8.3

Food

8.1

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.
Korean Air
8.4
Very Good
1,101 reviews
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Overall

8.4

Comfort

8.3

Food

8.1

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.
Qatar Airways
7.4
Good
3,596 reviews
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Overall

8.4

Comfort

8.3

Food

8.1

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.
Etihad Airways
7.4
Good
1,224 reviews
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Overall

8.4

Comfort

8.3

Food

8.1

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.
Turkish Airlines
7.3
Good
3,884 reviews
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Overall

8.4

Comfort

8.3

Food

8.1

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.
Air Canada
7.1
Good
9,657 reviews
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Overall

8.4

Comfort

8.3

Food

8.1

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?

    Korean Air, at S$ 1,341, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Singapore.Alternate airlines to your destination round-trip include Air Canada and Qatar Airways. Korean Air is priced at 13% 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 IndiGo, with whom users have recently found tickets for as low as S$ 535. However, be on the lookout for offers from Air India and Turkish Airlines, 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.

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