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$403+ Cheap flights from Dulles Intl (IAD) to Singapore

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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SIN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Dulles Intl to Singapore

Keep the following information in mind while searching for Dulles Intl to Singapore flight deals. Data was last updated September 15, 2025.

Round-trip from

$949
(Booking.com)

One-way from

$403
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,191
From Washington, D.C. Dulles Intl to Singapore
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One-way flight from Washington, D.C. Dulles Intl to Singapore
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Highest demand for flights based on searches. 11% potential increase in price ($156 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($59 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/129:40 pmIAD - SIN
2 stops31h 35mIndiGo
Mon 10/207:45 pmSIN - IAD
2 stops36h 00mIndiGo
Deal found 9/14$967
This oojo deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:13 pmIAD - SIN
1 stop34h 32mSingapore Airlines
Tue 11/189:00 amSIN - IAD
1 stop34h 23mSingapore Airlines
Deal found 9/14$969
This Booking.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/139:40 pmIAD - SIN
2 stops31h 35mIndiGo
Tue 10/287:45 pmSIN - IAD
2 stops36h 30mIndiGo
Deal found 9/13$991
This Gotogate deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:10 pmIAD - SIN
2 stops31h 10mMultiple Airlines
Thu 11/611:55 pmSIN - IAD
1 stop31h 35mMultiple Airlines
Deal found 9/15$996
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/159:40 pmIAD - SIN
2 stops31h 35mIndiGo
Mon 9/227:45 pmSIN - IAD
2 stops36h 00mIndiGo
Deal found 9/14$1,008
This Booking.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/99:40 pmIAD - SIN
2 stops31h 35mIndiGo
Mon 10/137:45 pmSIN - IAD
2 stops36h 00mIndiGo
Deal found 9/13$1,010
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/141:30 pmIAD - SIN
2 stops39h 45mIndiGo
Tue 1/207:40 pmSIN - IAD
2 stops36h 35mIndiGo
Deal found 9/14$1,015
This FlightHub deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1411:00 amIAD - SIN
1 stop22h 00mQatar Airways
Mon 9/223:10 amSIN - IAD
1 stop24h 30mQatar Airways
Deal found 9/13$1,021
This Booking.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/141:30 pmIAD - SIN
2 stops38h 50mIndiGo
Wed 11/197:40 pmSIN - IAD
2 stops36h 35mIndiGo
Deal found 9/13$1,022
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/89:10 pmIAD - SIN
2 stops31h 10mIndiGo
Tue 11/187:40 pmSIN - IAD
2 stops36h 35mIndiGo
Deal found 9/14$1,023
This CrystalTravel deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/299:40 pmIAD - SIN
1 stop32h 15mTurkish Airlines
Tue 10/1411:10 pmSIN - IAD
1 stop24h 35mTurkish Airlines
Deal found 9/13$1,027

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated September 15, 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

Thu 10/30

9:05 pm-8:45 am

1 stop23h 40m

Singapore Changi

Wed 11/5

3:15 am-3:55 pm

1 stop25h 40m

$1,115

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 10/5

10:05 pm-6:25 pm

1 stop32h 20m

Singapore Changi

Tue 10/14

8:40 pm-2:44 pm

1 stop30h 04m

$1,125

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 10/14

2:45 pm-6:15 am

2 stops27h 30m

Singapore Changi

Tue 10/21

8:40 pm-8:15 am

1 stop23h 35m

$1,125

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 10/14

6:58 pm-6:15 am

1 stop23h 17m

Singapore Changi

Mon 10/20

8:40 pm-7:02 am

1 stop22h 22m

$1,125

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 11/9

10:10 pm-8:15 pm

1 stop33h 05m

Singapore Changi

Tue 11/18

10:20 pm-6:55 am

1 stop21h 35m

$1,125

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sun 9/28

10:05 pm-6:25 pm

1 stop32h 20m

Singapore Changi

Wed 10/1

8:45 am-6:52 pm

1 stop22h 07m

$1,125

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 10/9

6:30 am-6:25 pm

1 stop23h 55m

Singapore Changi

Sun 10/19

11:05 am-10:05 am

1 stop35h 00m

$1,125

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Sat 10/4

10:05 pm-9:40 am

1 stop23h 35m

Singapore Changi

Thu 10/16

9:10 pm-4:10 pm

1 stop31h 00m

$1,126

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 1/29

4:10 pm-8:00 am

1 stop26h 50m

Singapore Changi

Wed 2/11

10:10 am-9:17 pm

2 stops24h 07m

$1,129

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Wed 10/15

4:00 pm-6:15 am

2 stops26h 15m

Singapore Changi

Wed 10/22

8:45 am-9:10 pm

1 stop24h 25m

$1,129

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 21 results
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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 round-trip 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

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Singapore (average of $1,002). Flying from Washington, D.C. Dulles Intl Airport to Singapore in December is currently the most expensive (average of $1,665). 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.

What is the cheapest time of day to fly from IAD to SG?

Find hourly flight availability from Dulles Intl to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Singapore, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 15, 2025.
See what other customers who have flown with Korean Air, Qatar Airways, and Etihad Airways from Washington, D.C. Dulles Intl Airport 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.
Korean Air
8.4
Very good
1,139 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

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.
Korean Air
8.4
Very good
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

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.
Qatar Airways
7.4
Good
3,624 reviews
Korean Air
8.4
Very good
1,139 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

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.
Etihad Airways
7.4
Good
1,250 reviews
Korean Air
8.4
Very good
1,139 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

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.
United Airlines
7.4
Good
8,929 reviews
Korean Air
8.4
Very good
1,139 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

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.
Turkish Airlines
7.3
Good
3,968 reviews
Korean Air
8.4
Very good
1,139 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

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.

  • 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 23h 40m. Fly via Qatar Airways or United Airlines to get the fastest option. Airlines will cover a distance of 9644 mi. Both multi-stop and nonstop 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 vacation 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, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Singapore (average of $1,002). Flying from Washington, D.C. Dulles Intl Airport to Singapore in December is currently the most expensive (average of $1,665). 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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Alternative routes for Dulles Intl to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Dulles Intl to Singapore

Discover the top 8 airlines that operate flights from Dulles Intl 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 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$807Average$996FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$816Average$940FlexibilityNo cancel feeOn-time77%
Etihad AirwaysCheapest$833Average$932FlexibilityNo cancel feeOn-time75%
Korean AirCheapest$944Average$1,199FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$996Average$1,288FlexibilityNo cancel feeOn-time68%
JetBlueCheapest$1,024Average$1,159FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$1,191Average$1,448FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,196Average$1,223FlexibilityNo cancel feeOn-time71%

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