S$664 Cheap Flights from Washington to Singapore

View S$664 flight on Wed, 18 Mar, 2026Opens in a new window

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

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Cheap Flights from Washington to Singapore (IAD-SIN)

Prices were available within the past 7 days and start at S$664 for one-way flights and S$1,286 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Tue, 3 Feb - Sun, 15 Feb
IAD
Washington
SIN
Singapore
S$1,286 Return, found 4 days ago
S$1,286
Return
found 4 days ago
Select Etihad Airways flight, departing Tue, 3 Feb from Washington to Singapore, returning Sun, 15 Feb, priced at S$1,286 found 4 days ago
Turkish Airlines
Thu, 9 Apr - Wed, 15 Apr
IAD
Washington
SIN
Singapore
S$1,326 Return, found 4 days ago
S$1,326
Return
found 4 days ago
Select Turkish Airlines flight, departing Thu, 9 Apr from Washington to Singapore, returning Wed, 15 Apr, priced at S$1,326 found 4 days ago
Qatar Airways
Sun, 2 Nov - Wed, 12 Nov
IAD
Washington
SIN
Singapore
S$1,365 Return, found 4 hours ago
S$1,365
Return
found 4 hours ago
Select Qatar Airways flight, departing Sun, 2 Nov from Washington to Singapore, returning Wed, 12 Nov, priced at S$1,365 found 4 hours ago
United
Mon, 8 Dec - Thu, 11 Dec
IAD
Washington
SIN
Singapore
S$1,448 Return, found 1 day ago
S$1,448
Return
found 1 day ago
Select United flight, departing Mon, 8 Dec from Washington to Singapore, returning Thu, 11 Dec, priced at S$1,448 found 1 day ago
American Airlines
Mon, 27 Oct - Tue, 11 Nov
IAD
Washington
SIN
Singapore
S$1,658 Return, found 1 day ago
S$1,658
Return
found 1 day ago
Select American Airlines flight, departing Mon, 27 Oct from Washington to Singapore, returning Tue, 11 Nov, priced at S$1,658 found 1 day ago
STARLUX Airlines
Mon, 27 Oct - Tue, 11 Nov
IAD
Washington
SIN
Singapore
S$1,784 Return, found 1 day ago
S$1,784
Return
found 1 day ago
Select STARLUX Airlines flight, departing Mon, 27 Oct from Washington to Singapore, returning Tue, 11 Nov, priced at S$1,784 found 1 day ago
Ethiopian Airlines
Thu, 9 Apr - Wed, 15 Apr
IAD
Washington
SIN
Singapore
S$1,799 Return, found 4 days ago
S$1,799
Return
found 4 days ago
Select Ethiopian Airlines flight, departing Thu, 9 Apr from Washington to Singapore, returning Wed, 15 Apr, priced at S$1,799 found 4 days ago
Malaysia Airlines
Sun, 2 Nov - Wed, 12 Nov
IAD
Washington
SIN
Singapore
S$1,871 Return, found 4 hours ago
S$1,871
Return
found 4 hours ago
Select Malaysia Airlines flight, departing Sun, 2 Nov from Washington to Singapore, returning Wed, 12 Nov, priced at S$1,871 found 4 hours ago
British Airways
Fri, 14 Nov - Fri, 21 Nov
IAD
Washington
SIN
Singapore
S$2,085 Return, found 14 hours ago
S$2,085
Return
found 14 hours ago
Select British Airways flight, departing Fri, 14 Nov from Washington to Singapore, returning Fri, 21 Nov, priced at S$2,085 found 14 hours ago
Korean Air
Mon, 27 Oct - Tue, 11 Nov
IAD
Washington
SIN
Singapore
S$2,107 Return, found 1 day ago
S$2,107
Return
found 1 day ago
Select Korean Air flight, departing Mon, 27 Oct from Washington to Singapore, returning Tue, 11 Nov, priced at S$2,107 found 1 day ago

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

September is typically the cheapest month to fly

From S$1,050 - S$1,487 per traveller.

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 S$1,286. 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 cancelled 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 kilometres, 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.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Changi
Airlines serving
Air Canada, Air China, Air France, All Nippon Airways, American Airlines, British Airways, Delta, Emirates, Ethiopian Airlines, Etihad Airways, JetBlue Airways, KLM, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, Swiss International Air Lines, Turkish Airlines, United
Return price
S$1,285
Distance
15439 km

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Perfect flights from Washington to Singapore

Your Journey from Washington to Singapore

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Washington to Singapore

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