S$642 Cheap Flights from Washington to Singapore

View S$642 flight on Tue, 1 Sept, 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$642 for one-way flights and S$1,259 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Thu, 9 Apr - Thu, 23 Apr
IAD
Washington
SIN
Singapore
S$1,259 Return, found 5 hours ago
S$1,259
Return
found 5 hours ago
Select Etihad Airways flight, departing Thu, 9 Apr from Washington to Singapore, returning Thu, 23 Apr, priced at S$1,259 found 5 hours ago
Etihad Airways
Mon, 26 Jan - Mon, 9 Feb
IAD
Washington
SIN
Singapore
S$1,269 Return, found 4 hours ago
S$1,269
Return
found 4 hours ago
Select Etihad Airways flight, departing Mon, 26 Jan from Washington to Singapore, returning Mon, 9 Feb, priced at S$1,269 found 4 hours ago
Saudia
Sat, 28 Feb - Tue, 3 Mar
IAD
Washington
SIN
Singapore
S$1,272 Return, found 2 days ago
S$1,272
Return
found 2 days ago
Select Saudia flight, departing Sat, 28 Feb from Washington to Singapore, returning Tue, 3 Mar, priced at S$1,272 found 2 days ago
Turkish Airlines
Thu, 9 Apr - Thu, 23 Apr
IAD
Washington
SIN
Singapore
S$1,356 Return, found 5 hours ago
S$1,356
Return
found 5 hours ago
Select Turkish Airlines flight, departing Thu, 9 Apr from Washington to Singapore, returning Thu, 23 Apr, priced at S$1,356 found 5 hours ago
United
Sun, 25 Jan - Thu, 29 Jan
IAD
Washington
SIN
Singapore
S$1,432 Return, found 4 days ago
S$1,432
Return
found 4 days ago
Select United flight, departing Sun, 25 Jan from Washington to Singapore, returning Thu, 29 Jan, priced at S$1,432 found 4 days ago
Delta
Wed, 11 Feb - Mon, 2 Mar
IAD
Washington
SIN
Singapore
S$1,450 Return, found 4 days ago
S$1,450
Return
found 4 days ago
Select Delta flight, departing Wed, 11 Feb from Washington to Singapore, returning Mon, 2 Mar, priced at S$1,450 found 4 days ago
Korean Air
Tue, 7 Apr - Sun, 26 Apr
IAD
Washington
SIN
Singapore
S$1,459 Return, found 3 days ago
S$1,459
Return
found 3 days ago
Select Korean Air flight, departing Tue, 7 Apr from Washington to Singapore, returning Sun, 26 Apr, priced at S$1,459 found 3 days ago
Qatar Airways
Thu, 26 Feb - Thu, 5 Mar
IAD
Washington
SIN
Singapore
S$1,476 Return, found 1 day ago
S$1,476
Return
found 1 day ago
Select Qatar Airways flight, departing Thu, 26 Feb from Washington to Singapore, returning Thu, 5 Mar, priced at S$1,476 found 1 day ago
All Nippon Airways
Thu, 22 Jan - Mon, 26 Jan
IAD
Washington
SIN
Singapore
S$1,490 Return, found 5 days ago
S$1,490
Return
found 5 days ago
Select All Nippon Airways flight, departing Thu, 22 Jan from Washington to Singapore, returning Mon, 26 Jan, priced at S$1,490 found 5 days ago
STARLUX Airlines
Thu, 26 Feb - Fri, 6 Mar
IAD
Washington
SIN
Singapore
S$1,566 Return, found 2 days ago
S$1,566
Return
found 2 days ago
Select STARLUX Airlines flight, departing Thu, 26 Feb from Washington to Singapore, returning Fri, 6 Mar, priced at S$1,566 found 2 days ago

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

September is typically the cheapest month to fly

From S$1,055 - S$1,503 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$1,259. 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 France, All Nippon Airways, American Airlines, British Airways, Delta, Emirates, Ethiopian Airlines, Etihad Airways, KLM, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, Saudia, Swiss International Air Lines, Turkish Airlines, United
Return price
S$1,258
Distance
15439 km

Book with confidence

Perfect flights 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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