Cheap Flights from Washington (IAD) to Singapore (SIN) from HK$3,536~

View HK$3,536 flight on Sun, 17 Aug 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Singapore Changi Airport (SIN)

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Find Cheap Flights from Washington (IAD) to Singapore (SIN)

Prices were available within the past 7 days and start at HK$3,536 for one-way flights and HK$7,243 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
HK$7,243 Return, found 1 hour ago
HK$7,243
Return
found 1 hour ago
Select Etihad Airways flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at HK$7,243 found 1 hour ago
Etihad Airways
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
HK$8,945 Return, found 1 hour ago
HK$8,945
Return
found 1 hour ago
Select Etihad Airways flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at HK$8,945 found 1 hour ago
Etihad Airways
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
HK$9,097 Return, found 1 hour ago
HK$9,097
Return
found 1 hour ago
Select Etihad Airways flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at HK$9,097 found 1 hour ago
United
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
HK$9,550 Return, found 1 hour ago
HK$9,550
Return
found 1 hour ago
Select United flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at HK$9,550 found 1 hour ago
Etihad Airways
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
HK$9,726 Return, found 1 hour ago
HK$9,726
Return
found 1 hour ago
Select Etihad Airways flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at HK$9,726 found 1 hour ago
United
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
HK$9,940 Return, found 1 hour ago
HK$9,940
Return
found 1 hour ago
Select United flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at HK$9,940 found 1 hour ago
Turkish Airlines
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
HK$10,098 Return, found 1 hour ago
HK$10,098
Return
found 1 hour ago
Select Turkish Airlines flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at HK$10,098 found 1 hour ago
American Airlines
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
HK$10,126 Return, found 1 hour ago
HK$10,126
Return
found 1 hour ago
Select American Airlines flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at HK$10,126 found 1 hour ago
Etihad Airways
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
HK$10,147 Return, found 1 hour ago
HK$10,147
Return
found 1 hour ago
Select Etihad Airways flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at HK$10,147 found 1 hour ago
All Nippon Airways
Sun, 17 Aug - Tue, 2 Sep
IAD
Washington
SIN
Singapore
HK$10,304 Return, found 1 hour ago
HK$10,304
Return
found 1 hour ago
Select All Nippon Airways flight, departing Sun, 17 Aug from Washington to Singapore, returning Tue, 2 Sep, priced at HK$10,304 found 1 hour ago

Find the cheapest month to fly from Washington (IAD) to Singapore (SIN)

September is typically the cheapest month to fly

From HK$5,501 - HK$8,907 per traveller.

Graph displaying average flight prices per month

Washington to Singapore route information
Origin airport
Washington Dulles Intl.
Destination airport
Changi
Return price
HK$7,243
Distance
15439 km

Flights from Chantilly to Singapore

Book cheap flights from Chantilly (IAD) to Singapore (SIN) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from Chantilly (IAD) to Singapore (SIN) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Chantilly (IAD) to Singapore (SIN) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Singapore flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Singapore and things to do in Singapore for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Singapore more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Singapore is HK$3,536 now!

 

Frequently asked questions

How much is a flight from IAD to Singapore Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip flight from IAD to SIN was HK$7,243. Fares this cheap don't last forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Washington Dulles Intl. Airport (IAD) to SIN?
Most flights can be canceled online, but every air carrier has its own set of terms and conditions. If you do need to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from Dulles Intl. Airport to Singapore Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Washington Dulles Intl. Airport (IAD) to Changi Airport (SIN) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Washington Dulles Intl. Airport (IAD) to Changi Airport (SIN)?
Chantilly to Singapore is around 15,500 kilometers, so be prepared to spend a while in the air. Don't forget to pack all the essentials, from your eye mask to your earphones. Throw in a few snacks to munch on throughout your flight too.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Singapore Airport?
You won't find any airlines flying directly between Dulles Intl. Airport and Changi Airport (SIN), so be prepared to make at least one stop on your journey. A layover can be a welcome way to break up a trip!
Are Dulles Intl. Airport to SIN flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Washington Dulles Intl. Airport (IAD) to Singapore Airport at the last minute could be your ticket to an awesome deal. However, you might miss out on a flight altogether! If you'd rather not take any chances, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to 12 months in advance. If your preferred carrier hasn't released tickets yet, check back frequently as deals are updated on Expedia all the time.

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