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$498+ Cheap flights from Dulles Intl (IAD) to Singapore (SIN)

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SIN
May 24 — May 311
Sun 5/24
Sun 5/31
1 adult, Economy
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Cheap 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 April 24, 2026.

This oojo deal was found by Cheapflights users on 4/20. 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.
Mon 9/289:00 pm
IAD
-
SIN
2 stops25h 15m
Qatar Airways
Wed 10/73:15 am
SIN
-
IAD
1 stop24h 25m
Qatar Airways
Deal found 4/20$1,140
This Qatar Airways deal was found by Cheapflights users on 4/20. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/199:00 pm
IAD
-
SIN
1 stop23h 50m
Qatar Airways
Wed 10/143:15 am
SIN
-
IAD
1 stop24h 25m
Qatar Airways
Deal found 4/20$1,141
This oojo deal was found by Cheapflights users on 4/20. 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.
Fri 5/19:00 pm
IAD
-
SIN
1 stop31h 15m
Qatar Airways
Mon 5/189:15 pm
SIN
-
IAD
2 stops33h 05m
Qatar Airways
Deal found 4/20$1,144
This Ovago deal was found by Cheapflights users on 4/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/249:00 pm
IAD
-
SIN
1 stop31h 15m
Qatar Airways
Fri 5/11:30 am
SIN
-
IAD
1 stop28h 50m
Qatar Airways
Deal found 4/20$1,145
This oojo deal was found by Cheapflights users on 4/20. 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.
Sun 6/73:10 pm
IAD
-
SIN
1 stop30h 30m
Etihad Airways
Sun 6/219:00 pm
SIN
-
IAD
1 stop24h 45m
Etihad Airways
Deal found 4/20$1,148
This CrystalTravel deal was found by Cheapflights users on 4/20. 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.
Tue 5/193:10 pm
IAD
-
SIN
1 stop30h 30m
Etihad Airways
Sun 5/249:00 pm
SIN
-
IAD
1 stop24h 45m
Etihad Airways
Deal found 4/20$1,153
This Justfly.com deal was found by Cheapflights users on 4/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/79:00 pm
IAD
-
SIN
2 stops26h 25m
Multiple Airlines
Tue 6/237:40 pm
SIN
-
IAD
1 stop32h 00m
Multiple Airlines
Deal found 4/19$1,162
This FlightHub deal was found by Cheapflights users on 4/20. 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.
Sat 5/99:00 pm
IAD
-
SIN
2 stops30h 35m
Multiple Airlines
Thu 5/211:30 am
SIN
-
IAD
1 stop28h 50m
Multiple Airlines
Deal found 4/20$1,164
This FlightHub deal was found by Cheapflights users on 4/20. 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 8/239:45 pm
IAD
-
SIN
1 stop32h 10m
Turkish Airlines
Thu 9/311:05 pm
SIN
-
IAD
1 stop24h 30m
Turkish Airlines
Deal found 4/20$1,165
This oojo deal was found by Cheapflights users on 4/20. 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 5/303:10 pm
IAD
-
SIN
1 stop30h 30m
Etihad Airways
Fri 6/59:00 pm
SIN
-
IAD
1 stop24h 45m
Etihad Airways
Deal found 4/20$1,166
This oojo deal was found by Cheapflights users on 4/20. 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.
Mon 5/119:00 pm
IAD
-
SIN
2 stops26h 25m
Qatar Airways
Mon 5/187:15 pm
SIN
-
IAD
2 stops35h 05m
Qatar Airways
Deal found 4/20$1,169
This Turkish Airlines deal was found by Cheapflights users on 4/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/71:20 pm
IAD
-
SIN
1 stop32h 10m
Turkish Airlines
Thu 9/1010:25 am
SIN
-
IAD
1 stop37h 10m
Turkish Airlines
Deal found 4/20$1,170

Find 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 April 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,140
(oojo)

One-way from

$498
(Cheapflightsfares)

Popular in

December

Cheapest in

April

Average price

$1,010
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Singapore Changi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Singapore Changi flights.
Search Deals
From Washington, D.C. Dulles Intl to Singapore Changi
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Singapore Changi
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($184 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($62 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 24, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 9/7

1:20 pm-9:30 am

1 stop32h 10m

Singapore Changi

Thu 9/10

10:25 am-11:35 am

1 stop37h 10m

$1,170

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 6/5

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Thu 6/18

5:00 pm-9:45 am

2 stops28h 45m

$1,494

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Fri 6/5

3:10 pm-9:40 am

1 stop30h 30m

Singapore Changi

Fri 6/12

5:00 pm-9:45 am

2 stops28h 45m

$1,495

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Thu 7/16

1:10 pm-6:15 am

2 stops29h 05m

Singapore Changi

Mon 8/3

8:35 pm-2:08 pm

2 stops29h 33m

$1,731
Quickest round-trip

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 9/7

7:00 am-11:55 pm

2 stops28h 55m

Singapore Changi

Wed 9/9

1:25 am-2:44 pm

2 stops25h 19m

$1,746

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 9/21

1:15 pm-5:00 am

1 stop27h 45m

Singapore Changi

Thu 9/24

10:00 pm-2:44 pm

2 stops28h 44m

$1,790

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 7/6

10:55 am-11:30 am

2 stops36h 35m

Singapore Changi

Sat 8/8

10:35 am-8:40 am

1 stop34h 05m

$2,170

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Tue 5/26

6:30 pm-9:55 pm

3 stops39h 25m

Singapore Changi

Tue 9/1

6:30 pm-2:00 pm

2 stops31h 30m

$2,204

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 8/10

6:30 pm-9:55 pm

3 stops39h 25m

Singapore Changi

Wed 8/19

6:30 pm-2:35 pm

2 stops32h 05m

$2,204

Washington, D.C.Singapore

IAD - SIN

IADSIN

Washington, D.C. Dulles Intl

Mon 7/6

5:25 pm-9:55 pm

2 stops40h 30m

Singapore Changi

Tue 7/14

6:30 pm-3:30 pm

3 stops33h 00m

$2,429

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 23 resultsSorted by cheapest first
1
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3

Compare providers for flights from Dulles Intl to Singapore

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Singapore in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Singapore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Singapore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Singapore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Singapore flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Singapore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

Booking 86 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.

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 $1,010). Flying from Washington, D.C. Dulles Intl Airport to Singapore in December is currently the most expensive (average of $1,940). 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 to fly round-trip from Washington, D.C. Dulles Intl Airport to Singapore?

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 April 24, 2026.
Peruse reviews from past customers who have flown with Qatar Airways,Turkish Airlines, andUnited Airlines from Washington, D.C. Dulles Intl Airport to Singapore to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qatar Airways
7.4
Good
3,727 reviews

Entertainment

7.3

Comfort

7.3

Food

7.3

Crew

7.9

Overall

7.4

Boarding

7.5

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Qatar Airways
7.4
Good
3,727 reviews
Qatar Airways
7.4
Good
3,727 reviews

Entertainment

7.3

Comfort

7.3

Food

7.3

Crew

7.9

Overall

7.4

Boarding

7.5

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Turkish Airlines
7.4
Good
4,330 reviews
Qatar Airways
7.4
Good
3,727 reviews

Entertainment

7.3

Comfort

7.3

Food

7.3

Crew

7.9

Overall

7.4

Boarding

7.5

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
United Airlines
7.4
Good
9,648 reviews
Qatar Airways
7.4
Good
3,727 reviews

Entertainment

7.3

Comfort

7.3

Food

7.3

Crew

7.9

Overall

7.4

Boarding

7.5

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Etihad Airways
7.3
Good
1,436 reviews
Qatar Airways
7.4
Good
3,727 reviews

Entertainment

7.3

Comfort

7.3

Food

7.3

Crew

7.9

Overall

7.4

Boarding

7.5

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
JetBlue
7.2
Good
2,954 reviews
Qatar Airways
7.4
Good
3,727 reviews

Entertainment

7.3

Comfort

7.3

Food

7.3

Crew

7.9

Overall

7.4

Boarding

7.5

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable

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?

    Singapore Changi (SIN) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Singapore. You should not have trouble finding flights to Changi from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 7 airlines have flights to the Singapore airport from Washington, D.C. Dulles Intl. It is only a 10.5 mi journey from Changi (SIN) to 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 28h 55m. Fly via Turkish Airlines, United Airlines, or Korean Air 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.

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

    Korean Air, at $743, 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 India and Etihad Airways. Korean Air is 41% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Turkish Airlines. According to our data, you can fly for as low as $433. Users have also found prices from $481 and $485 on Etihad Airways and Qatar Airways, respectively.

  • Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to Singapore?

    Washington, D.C. Dulles Intl Airport to Singapore flights have a layover in Doha most of the time.

  • Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to Singapore flights?

    Of the flights from Washington, D.C. Dulles Intl Airport to Singapore that have layovers, the fewest flights stop in Istanbul.

  • 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, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Singapore (average of $1,010). Flying from Washington, D.C. Dulles Intl Airport to Singapore in December is currently the most expensive (average of $1,940). 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.
Baltimore to Singapore flights

Top 7 airlines flying from Dulles Intl to Singapore

Discover the top 7 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 April 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$743Average$1,328FlexibilityNo cancel feeOn-time81%
Air IndiaCheapest$807Average$996FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$828Average$932FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$917Average$1,112FlexibilityNo cancel feeOn-time77%
Qatar AirwaysCheapest$1,063Average$1,367FlexibilityNo cancel feeOn-time68%
United AirlinesCheapest$1,125Average$1,424FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$1,245Average$2,103FlexibilityNo cancel feeOn-time62%

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